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* [PATCH v2 2/2] PCI/DPC: Disable DPC service when link is in L2/L3 ready, L2 and L3 state
From: Kai-Heng Feng @ 2022-01-27  2:54 UTC (permalink / raw)
  To: bhelgaas
  Cc: linuxppc-dev, linux-pci, linux-kernel, koba.ko, Kai-Heng Feng,
	Oliver O'Halloran, mika.westerberg
In-Reply-To: <20220127025418.1989642-1-kai.heng.feng@canonical.com>

Since TLP and DLLP transmission is disabled for a Link in L2/L3 Ready,
L2 and L3 (i.e. device in D3hot and D3cold), and DPC depends on AER, so
also disable DPC here.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
v2:
 - Wording change.
 - Empty line dropped.

 drivers/pci/pcie/dpc.c | 60 +++++++++++++++++++++++++++++++-----------
 1 file changed, 44 insertions(+), 16 deletions(-)

diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index 3e9afee02e8d1..414258967f08e 100644
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -343,13 +343,33 @@ void pci_dpc_init(struct pci_dev *pdev)
 	}
 }
 
+static void dpc_enable(struct pcie_device *dev)
+{
+	struct pci_dev *pdev = dev->port;
+	u16 ctl;
+
+	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
+	ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN;
+	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+}
+
+static void dpc_disable(struct pcie_device *dev)
+{
+	struct pci_dev *pdev = dev->port;
+	u16 ctl;
+
+	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
+	ctl &= ~(PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN);
+	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+}
+
 #define FLAG(x, y) (((x) & (y)) ? '+' : '-')
 static int dpc_probe(struct pcie_device *dev)
 {
 	struct pci_dev *pdev = dev->port;
 	struct device *device = &dev->device;
 	int status;
-	u16 ctl, cap;
+	u16 cap;
 
 	if (!pcie_aer_is_native(pdev) && !pcie_ports_dpc_native)
 		return -ENOTSUPP;
@@ -364,10 +384,7 @@ static int dpc_probe(struct pcie_device *dev)
 	}
 
 	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CAP, &cap);
-	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
-
-	ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN;
-	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+	dpc_enable(dev);
 	pci_info(pdev, "enabled with IRQ %d\n", dev->irq);
 
 	pci_info(pdev, "error containment capabilities: Int Msg #%d, RPExt%c PoisonedTLP%c SwTrigger%c RP PIO Log %d, DL_ActiveErr%c\n",
@@ -380,22 +397,33 @@ static int dpc_probe(struct pcie_device *dev)
 	return status;
 }
 
-static void dpc_remove(struct pcie_device *dev)
+static int dpc_suspend(struct pcie_device *dev)
 {
-	struct pci_dev *pdev = dev->port;
-	u16 ctl;
+	dpc_disable(dev);
+	return 0;
+}
 
-	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
-	ctl &= ~(PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN);
-	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+static int dpc_resume(struct pcie_device *dev)
+{
+	dpc_enable(dev);
+	return 0;
+}
+
+static void dpc_remove(struct pcie_device *dev)
+{
+	dpc_disable(dev);
 }
 
 static struct pcie_port_service_driver dpcdriver = {
-	.name		= "dpc",
-	.port_type	= PCIE_ANY_PORT,
-	.service	= PCIE_PORT_SERVICE_DPC,
-	.probe		= dpc_probe,
-	.remove		= dpc_remove,
+	.name			= "dpc",
+	.port_type		= PCIE_ANY_PORT,
+	.service		= PCIE_PORT_SERVICE_DPC,
+	.probe			= dpc_probe,
+	.suspend		= dpc_suspend,
+	.resume			= dpc_resume,
+	.runtime_suspend	= dpc_suspend,
+	.runtime_resume		= dpc_resume,
+	.remove			= dpc_remove,
 };
 
 int __init pcie_dpc_init(void)
-- 
2.33.1


^ permalink raw reply related

* Re: [PATCH 2/2] PCI/DPC: Disable DPC when link is in L2/L3 ready, L2 and L3 state
From: Kai-Heng Feng @ 2022-01-27  2:22 UTC (permalink / raw)
  To: Mika Westerberg
  Cc: linux-pci, linux-kernel, koba.ko, Oliver O'Halloran, bhelgaas,
	linuxppc-dev
In-Reply-To: <YfEsC94BvFwd5MLy@lahna>

On Wed, Jan 26, 2022 at 7:10 PM Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
>
> Hi,
>
> On Wed, Jan 26, 2022 at 03:18:52PM +0800, Kai-Heng Feng wrote:
> > Since TLP and DLLP transmission is disabled for a Link in L2/L3 Ready,
> > L2 and L3, and DPC depends on AER, so also disable DPC here.
>
> Here too I think it is good to mention that the DPC "service" never
> implemented the PM hooks in the first place

Will amend the commit message a bit.

>
> > Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
>
> One minor comment below, but other than that looks good,
>
> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
>
> > ---
> >  drivers/pci/pcie/dpc.c | 61 +++++++++++++++++++++++++++++++-----------
> >  1 file changed, 45 insertions(+), 16 deletions(-)
> >
> > diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
> > index 3e9afee02e8d1..9585c10b7c577 100644
> > --- a/drivers/pci/pcie/dpc.c
> > +++ b/drivers/pci/pcie/dpc.c
> > @@ -343,13 +343,34 @@ void pci_dpc_init(struct pci_dev *pdev)
> >       }
> >  }
> >
> > +static void dpc_enable(struct pcie_device *dev)
> > +{
> > +     struct pci_dev *pdev = dev->port;
> > +     u16 ctl;
> > +
> > +     pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
> > +
>
> Drop the empty line here.

OK, will do.

Kai-Heng

>
> > +     ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN;
> > +     pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
> > +}
> > +
> > +static void dpc_disable(struct pcie_device *dev)
> > +{
> > +     struct pci_dev *pdev = dev->port;
> > +     u16 ctl;
> > +
> > +     pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
> > +     ctl &= ~(PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN);
> > +     pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
> > +}

^ permalink raw reply

* Re: [PATCH 1/2] PCI/AER: Disable AER when link is in L2/L3 ready, L2 and L3 state
From: Kai-Heng Feng @ 2022-01-27  2:21 UTC (permalink / raw)
  To: Mika Westerberg
  Cc: Joerg Roedel, Lalithambika Krishnakumar, linux-pci, linux-kernel,
	koba.ko, Oliver O'Halloran, bhelgaas, linuxppc-dev, Lu Baolu
In-Reply-To: <YfEqZMUS9jyiErmF@lahna>

On Wed, Jan 26, 2022 at 7:03 PM Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
>
> Hi,
>
> On Wed, Jan 26, 2022 at 03:18:51PM +0800, Kai-Heng Feng wrote:
> > Commit 50310600ebda ("iommu/vt-d: Enable PCI ACS for platform opt in
> > hint") enables ACS, and some platforms lose its NVMe after resume from
> > S3:
> > [   50.947816] pcieport 0000:00:1b.0: DPC: containment event, status:0x1f01 source:0x0000
> > [   50.947817] pcieport 0000:00:1b.0: DPC: unmasked uncorrectable error detected
> > [   50.947829] pcieport 0000:00:1b.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Receiver ID)
> > [   50.947830] pcieport 0000:00:1b.0:   device [8086:06ac] error status/mask=00200000/00010000
> > [   50.947831] pcieport 0000:00:1b.0:    [21] ACSViol                (First)
> > [   50.947841] pcieport 0000:00:1b.0: AER: broadcast error_detected message
> > [   50.947843] nvme nvme0: frozen state error detected, reset controller
> >
> > It happens right after ACS gets enabled during resume.
>
> Is this really because of the above commit of due the fact that AER
> "service" never implemented the PM hooks in the first place ;-)

From what I can understand, all services other than PME should be
disabled during suspend.

For example, should we convert commit a697f072f5da8 ("PCI: Disable PTM
during suspend to save power") to PM hooks in PTM service?

> >
> > There's another case, when Thunderbolt reaches D3cold:
> > [   30.100211] pcieport 0000:00:1d.0: AER: Uncorrected (Non-Fatal) error received: 0000:00:1d.0
> > [   30.100251] pcieport 0000:00:1d.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID)
> > [   30.100256] pcieport 0000:00:1d.0:   device [8086:7ab0] error status/mask=00100000/00004000
> > [   30.100262] pcieport 0000:00:1d.0:    [20] UnsupReq               (First)
> > [   30.100267] pcieport 0000:00:1d.0: AER:   TLP Header: 34000000 08000052 00000000 00000000
> > [   30.100372] thunderbolt 0000:0a:00.0: AER: can't recover (no error_detected callback)
> > [   30.100401] xhci_hcd 0000:3e:00.0: AER: can't recover (no error_detected callback)
> > [   30.100427] pcieport 0000:00:1d.0: AER: device recovery failed
> >
> > Since PCIe spec "5.2 Link State Power Management" states that TLP and DLLP
> > transmission is disabled for a Link in L2/L3 Ready (D3hot), L2 (D3cold with aux
> > power) and L3 (D3cold), so disable AER to avoid the noises from turning power
> > rails on/off.
>
> I think more accurate here is to say when the topology behind the root
> port enters low power states. Reason here is that you can't really tell
> from the OS standpoint whether the link went into L1 or L2/3 before the
> ACPI power resource is turned off.

OK, let me change the commit message a bit. My intention is to state
"transmission is disabled" in those Link states.

Kai-Heng

>
> > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=209149
> > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215453
> > Fixes: 50310600ebda ("iommu/vt-d: Enable PCI ACS for platform opt in hint")
> > Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
>
> Thanks for fixing this!
>
> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

^ permalink raw reply

* Re: [PATCH 1/7] modules: Refactor within_module_core() and within_module_init()
From: Mike Rapoport @ 2022-01-26 21:36 UTC (permalink / raw)
  To: Christophe Leroy
  Cc: linux-arch@vger.kernel.org, kgdb-bugreport@lists.sourceforge.net,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Luis Chamberlain, Jessica Yu, linuxppc-dev@lists.ozlabs.org
In-Reply-To: <e5e58875bd15551d0386552d3f9fa9ee8bc183a2.1643015752.git.christophe.leroy@csgroup.eu>

On Mon, Jan 24, 2022 at 09:22:15AM +0000, Christophe Leroy wrote:
> within_module_core() and within_module_init() are doing the exact same
> test, one on core_layout, the second on init_layout.
> 
> In preparation of increasing the complexity of that verification,
> refactor it into a single function called within_module_layout().
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
> ---
>  include/linux/module.h | 17 +++++++++++++----
>  1 file changed, 13 insertions(+), 4 deletions(-)
> 
> diff --git a/include/linux/module.h b/include/linux/module.h
> index c9f1200b2312..33b4db8f5ca5 100644
> --- a/include/linux/module.h
> +++ b/include/linux/module.h
> @@ -565,18 +565,27 @@ bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
>  bool is_module_percpu_address(unsigned long addr);
>  bool is_module_text_address(unsigned long addr);
>  
> +static inline bool within_range(unsigned long addr, void *base, unsigned int size)
> +{
> +	return addr >= (unsigned long)base && addr < (unsigned long)base + size;
> +}

There's also 'within' at least in arch/x86/mm/pat/set_memory.c and surely
tons of open-coded "address within" code.

Should it live in, say, include/linux/range.h?

> +
> +static inline bool within_module_layout(unsigned long addr,
> +					const struct module_layout *layout)
> +{
> +	return within_range(addr, layout->base, layout->size);
> +}
> +
>  static inline bool within_module_core(unsigned long addr,
>  				      const struct module *mod)
>  {
> -	return (unsigned long)mod->core_layout.base <= addr &&
> -	       addr < (unsigned long)mod->core_layout.base + mod->core_layout.size;
> +	return within_module_layout(addr, &mod->core_layout);
>  }
>  
>  static inline bool within_module_init(unsigned long addr,
>  				      const struct module *mod)
>  {
> -	return (unsigned long)mod->init_layout.base <= addr &&
> -	       addr < (unsigned long)mod->init_layout.base + mod->init_layout.size;
> +	return within_module_layout(addr, &mod->init_layout);
>  }
>  
>  static inline bool within_module(unsigned long addr, const struct module *mod)
> -- 
> 2.33.1
> 

-- 
Sincerely yours,
Mike.

^ permalink raw reply

* [PATCH] include: linux: Reorganize timekeeping and ktime headers
From: Carlos Bilbao @ 2022-01-26 20:07 UTC (permalink / raw)
  To: john.stultz, tglx
  Cc: bilbao, linux-rtc, linux-ia64, jgross, sboyd, linux-kernel,
	rostedt, Carlos Bilbao, linux-m68k, geert, mhiramat,
	boon.leong.ong, linuxppc-dev, linux-stm32, linux-arm-kernel

The timekeeping subsystem could use some reorganization. Reorganize and
separate the headers by making ktime.h take care of the ktime_get()
family of functions, and reserve timekeeping.h for the actual timekeeping.

This also helps to avoid implicit function errors and strengthens the
header dependencies, since timekeeping.h was using ktime_to_ns(), a static
function defined in a header it does no include, ktime.h.

This patch also includes the header timekeeping.h wherever it is necessary
for a successful compilation after the header code reorganization for all
archs.

Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
 arch/arm64/kvm/hypercalls.c    |   1 +
 arch/ia64/kernel/time.c        |   1 +
 arch/m68k/atari/time.c         |   1 +
 arch/m68k/hp300/time.c         |   2 +
 arch/m68k/mac/via.c            |   1 +
 arch/m68k/mvme16x/config.c     |   1 +
 arch/m68k/sun3/sun3ints.c      |   1 +
 arch/powerpc/kernel/time.c     |   1 +
 arch/x86/kernel/rtc.c          |   1 +
 arch/x86/kernel/tsc.c          |   1 +
 drivers/rtc/class.c            |   1 +
 include/linux/ktime.h          | 196 +++++++++++++++++++++++++++++++-
 include/linux/pps_kernel.h     |   1 +
 include/linux/sched_clock.h    |   2 +
 include/linux/stmmac.h         |   1 +
 include/linux/timekeeping.h    | 197 +--------------------------------
 init/main.c                    |   1 +
 kernel/time/ntp.c              |   1 +
 kernel/time/posix-timers.c     |   1 +
 kernel/time/tick-legacy.c      |   1 +
 kernel/time/time.c             |   1 +
 kernel/time/timekeeping.c      |   1 +
 sound/pci/hda/hda_controller.c |   1 +
 23 files changed, 218 insertions(+), 198 deletions(-)

diff --git a/arch/arm64/kvm/hypercalls.c b/arch/arm64/kvm/hypercalls.c
index 30da78f72b3b..41499c1d7379 100644
--- a/arch/arm64/kvm/hypercalls.c
+++ b/arch/arm64/kvm/hypercalls.c
@@ -3,6 +3,7 @@
 
 #include <linux/arm-smccc.h>
 #include <linux/kvm_host.h>
+#include <linux/timekeeping.h>
 
 #include <asm/kvm_emulate.h>
 
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index fa9c0ab8c6fc..85e79ff3c98e 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -22,6 +22,7 @@
 #include <linux/efi.h>
 #include <linux/timex.h>
 #include <linux/timekeeper_internal.h>
+#include <linux/timekeeping.h>
 #include <linux/platform_device.h>
 #include <linux/sched/cputime.h>
 
diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c
index 7e44d0e9d0f8..b09d3ff40b36 100644
--- a/arch/m68k/atari/time.c
+++ b/arch/m68k/atari/time.c
@@ -19,6 +19,7 @@
 #include <linux/clocksource.h>
 #include <linux/delay.h>
 #include <linux/export.h>
+#include <linux/timekeeping.h>
 
 #include <asm/atariints.h>
 #include <asm/machdep.h>
diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c
index 1d1b7b3b5dd4..56c575096bcb 100644
--- a/arch/m68k/hp300/time.c
+++ b/arch/m68k/hp300/time.c
@@ -14,6 +14,8 @@
 #include <linux/sched.h>
 #include <linux/kernel_stat.h>
 #include <linux/interrupt.h>
+#include <linux/timekeeping.h>
+
 #include <asm/machdep.h>
 #include <asm/irq.h>
 #include <asm/io.h>
diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c
index 3d11d6219cdd..6dd8f85288e4 100644
--- a/arch/m68k/mac/via.c
+++ b/arch/m68k/mac/via.c
@@ -31,6 +31,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/irq.h>
+#include <linux/timekeeping.h>
 
 #include <asm/macintosh.h>
 #include <asm/macints.h>
diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
index b4422c2dfbbf..ebe1dc3ebb4c 100644
--- a/arch/m68k/mvme16x/config.c
+++ b/arch/m68k/mvme16x/config.c
@@ -28,6 +28,7 @@
 #include <linux/rtc.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/timekeeping.h>
 
 #include <asm/bootinfo.h>
 #include <asm/bootinfo-vme.h>
diff --git a/arch/m68k/sun3/sun3ints.c b/arch/m68k/sun3/sun3ints.c
index 36cc280a4505..209dccc2aed6 100644
--- a/arch/m68k/sun3/sun3ints.c
+++ b/arch/m68k/sun3/sun3ints.c
@@ -11,6 +11,7 @@
 #include <linux/sched.h>
 #include <linux/kernel_stat.h>
 #include <linux/interrupt.h>
+#include <linux/timekeeping.h>
 #include <asm/intersil.h>
 #include <asm/oplib.h>
 #include <asm/sun3ints.h>
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index cae8f03a44fe..b577a5a06621 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -54,6 +54,7 @@
 #include <linux/of_clk.h>
 #include <linux/suspend.h>
 #include <linux/processor.h>
+#include <linux/timekeeping.h>
 #include <asm/trace.h>
 
 #include <asm/interrupt.h>
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 586f718b8e95..98ea05cc6aeb 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -9,6 +9,7 @@
 #include <linux/export.h>
 #include <linux/pnp.h>
 #include <linux/of.h>
+#include <linux/timekeeping.h>
 
 #include <asm/vsyscall.h>
 #include <asm/x86_init.h>
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index a698196377be..add4388283c5 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -15,6 +15,7 @@
 #include <linux/timex.h>
 #include <linux/static_key.h>
 #include <linux/static_call.h>
+#include <linux/timekeeping.h>
 
 #include <asm/hpet.h>
 #include <asm/timer.h>
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 4b460c61f1d8..7e2bce8cf0b1 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -16,6 +16,7 @@
 #include <linux/kdev_t.h>
 #include <linux/idr.h>
 #include <linux/slab.h>
+#include <linux/timekeeping.h>
 #include <linux/workqueue.h>
 
 #include "rtc-core.h"
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 73f20deb497d..07971008b795 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -229,6 +229,198 @@ static inline ktime_t ms_to_ktime(u64 ms)
 	return ms * NSEC_PER_MSEC;
 }
 
-# include <linux/timekeeping.h>
+/*
+ * ktime_get() family: read the current time in a multitude of ways,
+ *
+ * The default time reference is CLOCK_MONOTONIC, starting at
+ * boot time but not counting the time spent in suspend.
+ * For other references, use the functions with "real", "clocktai",
+ * "boottime" and "raw" suffixes.
+ *
+ * To get the time in a different format, use the ones wit
+ * "ns", "ts64" and "seconds" suffix.
+ *
+ * See Documentation/core-api/timekeeping.rst for more details.
+ */
 
-#endif
+
+/*
+ * timespec64 based interfaces
+ */
+extern void ktime_get_raw_ts64(struct timespec64 *ts);
+extern void ktime_get_ts64(struct timespec64 *ts);
+extern void ktime_get_real_ts64(struct timespec64 *tv);
+extern void ktime_get_coarse_ts64(struct timespec64 *ts);
+extern void ktime_get_coarse_real_ts64(struct timespec64 *ts);
+
+void getboottime64(struct timespec64 *ts);
+
+/*
+ * time64_t base interfaces
+ */
+extern time64_t ktime_get_seconds(void);
+extern time64_t __ktime_get_real_seconds(void);
+extern time64_t ktime_get_real_seconds(void);
+
+/*
+ * ktime_t based interfaces
+ */
+
+enum tk_offsets {
+	TK_OFFS_REAL,
+	TK_OFFS_BOOT,
+	TK_OFFS_TAI,
+	TK_OFFS_MAX,
+};
+
+extern ktime_t ktime_get(void);
+extern ktime_t ktime_get_with_offset(enum tk_offsets offs);
+extern ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs);
+extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs);
+extern ktime_t ktime_get_raw(void);
+extern u32 ktime_get_resolution_ns(void);
+
+/**
+ * ktime_get_real - get the real (wall-) time in ktime_t format
+ */
+static inline ktime_t ktime_get_real(void)
+{
+	return ktime_get_with_offset(TK_OFFS_REAL);
+}
+
+static inline ktime_t ktime_get_coarse_real(void)
+{
+	return ktime_get_coarse_with_offset(TK_OFFS_REAL);
+}
+
+/**
+ * ktime_get_boottime - Returns monotonic time since boot in ktime_t format
+ *
+ * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the
+ * time spent in suspend.
+ */
+static inline ktime_t ktime_get_boottime(void)
+{
+	return ktime_get_with_offset(TK_OFFS_BOOT);
+}
+
+static inline ktime_t ktime_get_coarse_boottime(void)
+{
+	return ktime_get_coarse_with_offset(TK_OFFS_BOOT);
+}
+
+/**
+ * ktime_get_clocktai - Returns the TAI time of day in ktime_t format
+ */
+static inline ktime_t ktime_get_clocktai(void)
+{
+	return ktime_get_with_offset(TK_OFFS_TAI);
+}
+
+static inline ktime_t ktime_get_coarse_clocktai(void)
+{
+	return ktime_get_coarse_with_offset(TK_OFFS_TAI);
+}
+
+static inline ktime_t ktime_get_coarse(void)
+{
+	struct timespec64 ts;
+
+	ktime_get_coarse_ts64(&ts);
+	return timespec64_to_ktime(ts);
+}
+
+static inline u64 ktime_get_coarse_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse());
+}
+
+static inline u64 ktime_get_coarse_real_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_real());
+}
+
+static inline u64 ktime_get_coarse_boottime_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_boottime());
+}
+
+static inline u64 ktime_get_coarse_clocktai_ns(void)
+{
+	return ktime_to_ns(ktime_get_coarse_clocktai());
+}
+
+/**
+ * ktime_mono_to_real - Convert monotonic time to clock realtime
+ */
+static inline ktime_t ktime_mono_to_real(ktime_t mono)
+{
+	return ktime_mono_to_any(mono, TK_OFFS_REAL);
+}
+
+static inline u64 ktime_get_ns(void)
+{
+	return ktime_to_ns(ktime_get());
+}
+
+static inline u64 ktime_get_real_ns(void)
+{
+	return ktime_to_ns(ktime_get_real());
+}
+
+static inline u64 ktime_get_boottime_ns(void)
+{
+	return ktime_to_ns(ktime_get_boottime());
+}
+
+static inline u64 ktime_get_clocktai_ns(void)
+{
+	return ktime_to_ns(ktime_get_clocktai());
+}
+
+static inline u64 ktime_get_raw_ns(void)
+{
+	return ktime_to_ns(ktime_get_raw());
+}
+
+extern u64 ktime_get_mono_fast_ns(void);
+extern u64 ktime_get_raw_fast_ns(void);
+extern u64 ktime_get_boot_fast_ns(void);
+extern u64 ktime_get_real_fast_ns(void);
+
+/*
+ * timespec64/time64_t interfaces utilizing the ktime based ones
+ * for API completeness, these could be implemented more efficiently
+ * if needed.
+ */
+static inline void ktime_get_boottime_ts64(struct timespec64 *ts)
+{
+	*ts = ktime_to_timespec64(ktime_get_boottime());
+}
+
+static inline void ktime_get_coarse_boottime_ts64(struct timespec64 *ts)
+{
+	*ts = ktime_to_timespec64(ktime_get_coarse_boottime());
+}
+
+static inline time64_t ktime_get_boottime_seconds(void)
+{
+	return ktime_divns(ktime_get_coarse_boottime(), NSEC_PER_SEC);
+}
+
+static inline void ktime_get_clocktai_ts64(struct timespec64 *ts)
+{
+	*ts = ktime_to_timespec64(ktime_get_clocktai());
+}
+
+static inline void ktime_get_coarse_clocktai_ts64(struct timespec64 *ts)
+{
+	*ts = ktime_to_timespec64(ktime_get_coarse_clocktai());
+}
+
+static inline time64_t ktime_get_clocktai_seconds(void)
+{
+	return ktime_divns(ktime_get_coarse_clocktai(), NSEC_PER_SEC);
+}
+
+#endif /* _LINUX_KTIME_H */
diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h
index 78c8ac4951b5..24970c202ac6 100644
--- a/include/linux/pps_kernel.h
+++ b/include/linux/pps_kernel.h
@@ -12,6 +12,7 @@
 #include <linux/cdev.h>
 #include <linux/device.h>
 #include <linux/time.h>
+#include <linux/timekeeping.h>
 
 /*
  * Global defines
diff --git a/include/linux/sched_clock.h b/include/linux/sched_clock.h
index 835ee87ed792..f0fa287710da 100644
--- a/include/linux/sched_clock.h
+++ b/include/linux/sched_clock.h
@@ -5,6 +5,8 @@
 #ifndef LINUX_SCHED_CLOCK
 #define LINUX_SCHED_CLOCK
 
+#include <linux/timekeeping.h>
+
 #ifdef CONFIG_GENERIC_SCHED_CLOCK
 /**
  * struct clock_read_data - data required to read from sched_clock()
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index a6f03b36fc4f..bf235ff101d5 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -14,6 +14,7 @@
 
 #include <linux/platform_device.h>
 #include <linux/phy.h>
+#include <linux/timekeeping.h>
 
 #define MTL_MAX_RX_QUEUES	8
 #define MTL_MAX_TX_QUEUES	8
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 78a98bdff76d..b1c54f5ff91e 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -19,201 +19,6 @@ extern void legacy_timer_tick(unsigned long ticks);
 extern int do_settimeofday64(const struct timespec64 *ts);
 extern int do_sys_settimeofday64(const struct timespec64 *tv,
 				 const struct timezone *tz);
-
-/*
- * ktime_get() family: read the current time in a multitude of ways,
- *
- * The default time reference is CLOCK_MONOTONIC, starting at
- * boot time but not counting the time spent in suspend.
- * For other references, use the functions with "real", "clocktai",
- * "boottime" and "raw" suffixes.
- *
- * To get the time in a different format, use the ones wit
- * "ns", "ts64" and "seconds" suffix.
- *
- * See Documentation/core-api/timekeeping.rst for more details.
- */
-
-
-/*
- * timespec64 based interfaces
- */
-extern void ktime_get_raw_ts64(struct timespec64 *ts);
-extern void ktime_get_ts64(struct timespec64 *ts);
-extern void ktime_get_real_ts64(struct timespec64 *tv);
-extern void ktime_get_coarse_ts64(struct timespec64 *ts);
-extern void ktime_get_coarse_real_ts64(struct timespec64 *ts);
-
-void getboottime64(struct timespec64 *ts);
-
-/*
- * time64_t base interfaces
- */
-extern time64_t ktime_get_seconds(void);
-extern time64_t __ktime_get_real_seconds(void);
-extern time64_t ktime_get_real_seconds(void);
-
-/*
- * ktime_t based interfaces
- */
-
-enum tk_offsets {
-	TK_OFFS_REAL,
-	TK_OFFS_BOOT,
-	TK_OFFS_TAI,
-	TK_OFFS_MAX,
-};
-
-extern ktime_t ktime_get(void);
-extern ktime_t ktime_get_with_offset(enum tk_offsets offs);
-extern ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs);
-extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs);
-extern ktime_t ktime_get_raw(void);
-extern u32 ktime_get_resolution_ns(void);
-
-/**
- * ktime_get_real - get the real (wall-) time in ktime_t format
- */
-static inline ktime_t ktime_get_real(void)
-{
-	return ktime_get_with_offset(TK_OFFS_REAL);
-}
-
-static inline ktime_t ktime_get_coarse_real(void)
-{
-	return ktime_get_coarse_with_offset(TK_OFFS_REAL);
-}
-
-/**
- * ktime_get_boottime - Returns monotonic time since boot in ktime_t format
- *
- * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the
- * time spent in suspend.
- */
-static inline ktime_t ktime_get_boottime(void)
-{
-	return ktime_get_with_offset(TK_OFFS_BOOT);
-}
-
-static inline ktime_t ktime_get_coarse_boottime(void)
-{
-	return ktime_get_coarse_with_offset(TK_OFFS_BOOT);
-}
-
-/**
- * ktime_get_clocktai - Returns the TAI time of day in ktime_t format
- */
-static inline ktime_t ktime_get_clocktai(void)
-{
-	return ktime_get_with_offset(TK_OFFS_TAI);
-}
-
-static inline ktime_t ktime_get_coarse_clocktai(void)
-{
-	return ktime_get_coarse_with_offset(TK_OFFS_TAI);
-}
-
-static inline ktime_t ktime_get_coarse(void)
-{
-	struct timespec64 ts;
-
-	ktime_get_coarse_ts64(&ts);
-	return timespec64_to_ktime(ts);
-}
-
-static inline u64 ktime_get_coarse_ns(void)
-{
-	return ktime_to_ns(ktime_get_coarse());
-}
-
-static inline u64 ktime_get_coarse_real_ns(void)
-{
-	return ktime_to_ns(ktime_get_coarse_real());
-}
-
-static inline u64 ktime_get_coarse_boottime_ns(void)
-{
-	return ktime_to_ns(ktime_get_coarse_boottime());
-}
-
-static inline u64 ktime_get_coarse_clocktai_ns(void)
-{
-	return ktime_to_ns(ktime_get_coarse_clocktai());
-}
-
-/**
- * ktime_mono_to_real - Convert monotonic time to clock realtime
- */
-static inline ktime_t ktime_mono_to_real(ktime_t mono)
-{
-	return ktime_mono_to_any(mono, TK_OFFS_REAL);
-}
-
-static inline u64 ktime_get_ns(void)
-{
-	return ktime_to_ns(ktime_get());
-}
-
-static inline u64 ktime_get_real_ns(void)
-{
-	return ktime_to_ns(ktime_get_real());
-}
-
-static inline u64 ktime_get_boottime_ns(void)
-{
-	return ktime_to_ns(ktime_get_boottime());
-}
-
-static inline u64 ktime_get_clocktai_ns(void)
-{
-	return ktime_to_ns(ktime_get_clocktai());
-}
-
-static inline u64 ktime_get_raw_ns(void)
-{
-	return ktime_to_ns(ktime_get_raw());
-}
-
-extern u64 ktime_get_mono_fast_ns(void);
-extern u64 ktime_get_raw_fast_ns(void);
-extern u64 ktime_get_boot_fast_ns(void);
-extern u64 ktime_get_real_fast_ns(void);
-
-/*
- * timespec64/time64_t interfaces utilizing the ktime based ones
- * for API completeness, these could be implemented more efficiently
- * if needed.
- */
-static inline void ktime_get_boottime_ts64(struct timespec64 *ts)
-{
-	*ts = ktime_to_timespec64(ktime_get_boottime());
-}
-
-static inline void ktime_get_coarse_boottime_ts64(struct timespec64 *ts)
-{
-	*ts = ktime_to_timespec64(ktime_get_coarse_boottime());
-}
-
-static inline time64_t ktime_get_boottime_seconds(void)
-{
-	return ktime_divns(ktime_get_coarse_boottime(), NSEC_PER_SEC);
-}
-
-static inline void ktime_get_clocktai_ts64(struct timespec64 *ts)
-{
-	*ts = ktime_to_timespec64(ktime_get_clocktai());
-}
-
-static inline void ktime_get_coarse_clocktai_ts64(struct timespec64 *ts)
-{
-	*ts = ktime_to_timespec64(ktime_get_coarse_clocktai());
-}
-
-static inline time64_t ktime_get_clocktai_seconds(void)
-{
-	return ktime_divns(ktime_get_coarse_clocktai(), NSEC_PER_SEC);
-}
-
 /*
  * RTC specific
  */
@@ -308,4 +113,4 @@ void read_persistent_wall_and_boot_offset(struct timespec64 *wall_clock,
 extern int update_persistent_clock64(struct timespec64 now);
 #endif
 
-#endif
+#endif /* _LINUX_TIMEKEEPING_H */
diff --git a/init/main.c b/init/main.c
index bb984ed79de0..6a6f85e9404f 100644
--- a/init/main.c
+++ b/init/main.c
@@ -99,6 +99,7 @@
 #include <linux/kcsan.h>
 #include <linux/init_syscalls.h>
 #include <linux/stackdepot.h>
+#include <linux/timekeeping.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 406dccb79c2b..804f06801737 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/rtc.h>
 #include <linux/audit.h>
+#include <linux/timekeeping.h>
 
 #include "ntp_internal.h"
 #include "timekeeping_internal.h"
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 1cd10b102c51..410a9336748e 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -13,6 +13,7 @@
 #include <linux/interrupt.h>
 #include <linux/slab.h>
 #include <linux/time.h>
+#include <linux/timekeeping.h>
 #include <linux/mutex.h>
 #include <linux/sched/task.h>
 
diff --git a/kernel/time/tick-legacy.c b/kernel/time/tick-legacy.c
index af225b32f5b3..9a534f716462 100644
--- a/kernel/time/tick-legacy.c
+++ b/kernel/time/tick-legacy.c
@@ -7,6 +7,7 @@
 #include <linux/irq.h>
 #include <linux/profile.h>
 #include <linux/timekeeper_internal.h>
+#include <linux/timekeeping.h>
 
 #include "tick-internal.h"
 
diff --git a/kernel/time/time.c b/kernel/time/time.c
index 29923b20e0e4..7292ed074742 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -29,6 +29,7 @@
 #include <linux/timex.h>
 #include <linux/capability.h>
 #include <linux/timekeeper_internal.h>
+#include <linux/timekeeping.h>
 #include <linux/errno.h>
 #include <linux/syscalls.h>
 #include <linux/security.h>
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index b348749a9fc6..d234cb8a97fe 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -22,6 +22,7 @@
 #include <linux/pvclock_gtod.h>
 #include <linux/compiler.h>
 #include <linux/audit.h>
+#include <linux/timekeeping.h>
 
 #include "tick-internal.h"
 #include "ntp_internal.h"
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index 930ae4002a81..8014f02e4443 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <linux/slab.h>
+#include <linux/timekeeping.h>
 
 #ifdef CONFIG_X86
 /* for art-tsc conversion */
-- 
2.27.0


^ permalink raw reply related

* Re: [PATCH 1/3] lib/raid6/test/Makefile: Use `$(pound)` instead of `\#` for Make 4.3
From: Tim Small @ 2022-01-26 19:29 UTC (permalink / raw)
  To: Paul Menzel, David Laight; +Cc: linux-raid, Song Liu, linuxppc-dev, Matt Brown
In-Reply-To: <e2e25fc9-ff40-9183-6ca7-fab4708fa1d0@molgen.mpg.de>

On 26/01/2022 12:12, Paul Menzel wrote:

> Sure, I can change that,

FWIW, the GNU Make documentation uses "Number signs" to refer to "#", 
and I think that may cause the least confusion across speakers of 
different dialects of English.

Tim.

^ permalink raw reply

* Re: a pound's a pound the whole world 'round (was "Re: [PATCH 1/3] ... Use `$(pound)` instead ...")
From: David T-G @ 2022-01-26 14:38 UTC (permalink / raw)
  To: linux-raid@vger.kernel.org; +Cc: linuxppc-dev@lists.ozlabs.org
In-Reply-To: <0214ae2639174812948a631ac4e142c8@AcuMS.aculab.com>

David, et al --

...and then David Laight said...
% 
% From: Paul Menzel
% > Sent: 26 January 2022 11:42
% > 
% ..
% > +pound := \#
% 
% Please use 'hash' not 'pound'.

Ahem ...  Everyone knows that hash is best served hot and that
that symbol is an octothorpe.


% Only american greengrocers use that horrid name.
[snip]

*grin*


HAND

:-D
-- 
David T-G
See http://justpickone.org/davidtg/email/
See http://justpickone.org/davidtg/tofu.txt


^ permalink raw reply

* Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8
From: John Paul Adrian Glaubitz @ 2022-01-26 20:21 UTC (permalink / raw)
  To: Michael Ellerman; +Cc: debian-powerpc@lists.debian.org, linuxppc-dev
In-Reply-To: <52b57080-efbd-c582-30df-f1d638e18e14@physik.fu-berlin.de>

Hi Michael!

On 1/13/22 01:17, John Paul Adrian Glaubitz wrote:
> On 1/9/22 23:17, John Paul Adrian Glaubitz wrote:
>> On 1/7/22 12:20, John Paul Adrian Glaubitz wrote:
>>>> Can you separately test with (on the host):
>>>>
>>>>  # echo 0 > /sys/module/kvm_hv/parameters/dynamic_mt_modes
>>>
>>> I'm trying to turn off "dynamic_mt_modes" first and see if that makes any difference.
>>>
>>> I will report back.
>>
>> So far the machine is running stable now and the VM built gcc-9 without
>> crashing the host. I will continue to monitor the machine and report back
>> if it crashes, but it looks like this could be it.
> 
> So, it seems that setting "dynamic_mt_modes" actually did the trick, the host is no longer
> crashing. However, I have observed on two occasions now that the build VM is just suddenly
> off as if someone has shut it down using the "force-off" option in the virt-manager user
> interface.

Just as a heads-up. Ever since I set

	echo 0 > /sys/module/kvm_hv/parameters/dynamic_mt_modes

on the host machine, I never saw the crash again. So the issue seems to be related to the
dynamic_mt_modes feature.

Thanks,
Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913


^ permalink raw reply

* Re: ppc: hard lockup / hang in v5.17-rc1 under QEMU
From: Miguel Ojeda @ 2022-01-26 18:57 UTC (permalink / raw)
  To: Cédric Le Goater; +Cc: linuxppc-dev, linux-kernel, Nicholas Piggin
In-Reply-To: <cf6ac499-4190-cbe5-255c-f9edf07a4786@kaod.org>

On Wed, Jan 26, 2022 at 4:03 PM Cédric Le Goater <clg@kaod.org> wrote:
>
> Indeed. I could reproduce.

Thanks for the quick confirmation!

> Could you please send the QEMU command line and the full dmesg ? and
> possibly open an issue on :
>
>    https://gitlab.com/qemu-project/qemu/-/issues/
>
> I guess it's a QEMU modeling issue.

Of course -- done (details there):

    https://gitlab.com/qemu-project/qemu/-/issues/842

Cheers,
Miguel

^ permalink raw reply

* Re: ppc: hard lockup / hang in v5.17-rc1 under QEMU
From: Cédric Le Goater @ 2022-01-26 15:03 UTC (permalink / raw)
  To: Miguel Ojeda, linuxppc-dev, linux-kernel, Nicholas Piggin
In-Reply-To: <CANiq72n_FmDx=r-o9J8gYc6LpwRL5EGmhM6Xzwv27Xc7h1TNDw@mail.gmail.com>

On 1/26/22 15:16, Miguel Ojeda wrote:
> Hi PPC folks,
> 
> Our ppc64le CI deterministically triggers a hard lockup / hang under
> QEMU since v5.17-rc1 (upgrading from v5.16).
> 
> Bisecting points to 0faf20a1ad16 ("powerpc/64s/interrupt: Don't enable
> MSR[EE] in irq handlers unless perf is in use").

Indeed. I could reproduce.

Could you please send the QEMU command line and the full dmesg ? and
possibly open an issue on :

   https://gitlab.com/qemu-project/qemu/-/issues/

I guess it's a QEMU modeling issue.

Thanks,

C.


> 
> Cheers,
> Miguel
> 
> [   16.328310] watchdog: CPU 1 detected hard LOCKUP on other CPUs 0
> [   16.328955] watchdog: CPU 1 TB:16743325700, last SMP heartbeat
> TB:8453096925 (16191ms ago)
> [   16.330786] watchdog: CPU 0 Hard LOCKUP
> [   16.331078] watchdog: CPU 0 TB:16744720354, last heartbeat
> TB:8453109168 (16194ms ago)
> [   16.331295] Kernel panic - not syncing: Hard LOCKUP
> [   16.331312] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-rc2+ #28
> [   16.331729] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.16.0-rc2+ #28
> [   16.332294] NIP:  c000000000009784 LR: c00000000034ee60 CTR: c0000000000096e0
> [   16.332339] REGS: c00000001ff87d60 TRAP: 0100   Not tainted  (5.16.0-rc2+)
> [   16.332410] MSR:  8000000000001031 <SF
> [   16.332520] Call Trace:
> [   16.334429] ,ME,IR,DR,LE>  CR: 24000088  XER: 20040000
> [   16.334770] CFAR: c00000000000977c IRQMASK: 3
> [   16.334770] GPR00: c00000000034ee60 c00000000111f590
> c00000000111f400 0000000000008002
> [   16.334770] GPR04: 0000000000000001 c00000000113f400
> c00000000106f400 c00000000110f400
> [   16.334770] GPR08: c0000000003af400 0000000024000088
> c00000000111f8a0 c000000000011d00
> [   16.334770] GPR12: 8000000000009033 c0000000011d0000
> 0000000000000000 0000000000000000
> [   16.334770] GPR16: c00000000110ab90 c0000000010722f0
> c000000001142100 0000000000000001
> [   16.334770] GPR20: 0000000000000000 000000000000000a
> ffffffff00049233 c0000000010722a8
> [   16.334770] GPR24: 0000000000000282 c000000001076580
> c000000001143a00 0000000004200002
> [   16.334770] GPR28: c0000000010b0480 c0000000010722a8
> c0000000003b6cfa 00000000015e0000
> [   16.334464] [c0000000062675c0] [c0000000003283e0] dump_stack_lvl+0x78/0xb8
> [   16.335274] NIP [c000000000009784] decrementer_common_virt+0xa4/0x210
> [   16.336451]  (unreliable)
> [   16.335629] LR [c00000000034ee60] __do_softirq+0xe0/0x2c4
> [   16.336658] [c000000006267600] [c00000000009378c] panic+0x150/0x3a4
> [   16.336797] Call Trace:
> [   16.337294]
> [   16.336809] [c00000000111f590] [c00000000000c6d8]
> interrupt_return_srr_kernel+0x8/0xec (unreliable)
> [   16.337615] [c00000000111f8a0] [c0000000000d2b24]
> trigger_load_balance+0x94/0x480
> [   16.337863] [c00000000111f8d0] [c00000000034ee60] __do_softirq+0xe0/0x2c4
> [   16.338079] [c00000000111f9c0] [c00000000009b018] irq_exit+0xa8/0x130
> [   16.338225] [c00000000111fa00] [c00000000001b590] timer_interrupt+0x1b0/0x200
> [   16.338496] [c00000000111fa60] [c0000000000098e8]
> decrementer_common_virt+0x208/0x210
> [   16.338803] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> [   16.339089] NIP:  c000000000072a48 LR: c000000000074d04 CTR: c000000000074c60
> [   16.339103] REGS: c00000000111fad0 TRAP: 0900   Not tainted  (5.16.0-rc2+)
> [   16.339117] MSR:  8000000002009033 <SF,VEC,EE,ME
> [   16.337355] [c0000000062676b0] [c000000000092d78] nmi_panic+0x78/0x90
> [   16.339231] ,IR,DR,RI,LE>  CR: 22000888  XER: 00000000
> [   16.339354] CFAR: c000000000074d00 IRQMASK: 0
> [   16.339354] GPR00: 0000000022000888
> [   16.340017]
> [   16.340120] [c000000006267710] [c000000000027650]
> watchdog_smp_panic+0x420/0x4e0
> [   16.340441] [c000000006267800] [c00000000002717c]
> watchdog_timer_fn+0xac/0x160
> [   16.340804] c00000000111fd70 c00000000111f400
> [   16.340715] [c000000006267840] [c0000000001202d8] __run_hrtimer+0xc8/0x190
> [   16.341234] 0000000000000000
> [   16.341234] GPR04: 0000000000000001 c00000000106f400
> 0000000000000000 0000000001f40000
> [   16.341234] GPR08: 001908b100000000 00000000000002ea
> 0000000000000000 000000000000006b
> [   16.341234] GPR12: c000000000074c60 c0000000011d0000
> 0000000000000000 0000000000000000
> [   16.341234] GPR16: 0000000000000000 0000000000000000
> 0000000000000000 0000000000000000
> [   16.341234] GPR20: 0000000000000000 0000000000000000
> 0000000000000000 0000000000000000
> [   16.341234] GPR24:
> [   16.341779]
> [   16.342182] c00000000113f400 0000000000000001 c000000001145928
> 0000000000000001
> [   16.342182] GPR28: c0000000010717a0 c000000001071798
> c0000000010b0480 00000000015e0000
> [   16.342160] [c000000006267890] [c00000000011f300]
> hrtimer_run_queues+0x150/0x1c0
> [   16.342276] NIP [c000000000072a48] plpar_hcall_norets_notrace+0x18/0x2c
> [   16.342783]
> [   16.342820] [c000000006267910] [c00000000011cf58]
> update_process_times+0x88/0x110
> [   16.343127] [c000000006267960] [c00000000012dbc8]
> tick_nohz_handler+0xd8/0x150
> [   16.344080] [c0000000062679a0] [c00000000001b570] timer_interrupt+0x190/0x200
> [   16.344439] [c000000006267a00] [c0000000000098e8]
> decrementer_common_virt+0x208/0x210
> [   16.342542] LR [c000000000074d04] pseries_lpar_idle+0xa4/0x160
> [   16.347000] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> [   16.347224] --- interrupt: 900
> [   16.347525] NIP:  c000000000072a48 LR: c000000000074d04 CTR: c000000000074c60
> [   16.347637] REGS: c000000006267a70 TRAP: 0900   Not tainted  (5.16.0-rc2+)
> [   16.347716] MSR:  8000000000009033 <SF,EE,ME,IR,DR,RI,LE
> [   16.347269] [c00000000111fd70] [c00000000111fdc0] .TOC.+0x9c0/0xc00
> [   16.347871] >  CR: 22000048  XER: 00000000
> [   16.347910] CFAR: c000000000074d00 IRQMASK: 0
> [   16.347910] GPR00: 0000000022000048 c000000006267d10
> c00000000111f400 0000000000000000
> [   16.347910] GPR04: 0000000000000001
> [   16.348004]  (unreliable)
> [   16.348331] c00000000106f400 0000000000000800 0000000000007b26
> [   16.348331] GPR08: 0005204180000000 0000000000000000
> 0000000000000000 000000000000002c
> [   16.348331] GPR12: c000000000074c60 c00000001ffe4d00
> [   16.348347] [c00000000111fdf0] [c0000000000179a4] arch_cpu_idle+0x74/0x110
> [   16.348453] c000000001145a28 c00000000118f400
> [   16.348453] GPR16: c000000001070488 c0000000011458d0
> c0000000011458d8 0000000000000001
> [   16.348453] GPR20: c00000000118f400 0000000000000000
> 0000000000000000 0000000000000002
> [   16.348749]
> [   16.349107]
> [   16.349107] GPR24: c00000000113f400 0000000000000002
> c000000001145928 0000000000000001
> [   16.349107] GPR28: c0000000010717a0 c000000001071798
> c0000000061aa200 c00000000003d350
> [   16.349137] [c00000000111fe30] [c00000000034e28c] default_idle_call+0x4c/0x90
> [   16.349398] NIP [c000000000072a48] plpar_hcall_norets_notrace+0x18/0x2c
> [   16.349562]
> [   16.349771] [c00000000111fe50] [c0000000000d0b40] do_idle+0x110/0x1d0
> [   16.349946] [c00000000111feb0] [c0000000000d0c34] cpu_startup_entry+0x34/0x50
> [   16.350175] [c00000000111fee0] [c000000000011180] rest_init+0xe0/0x110
> [   16.350307] [c00000000111ff10] [c0000000010046e8] start_kernel+0x3ac/0x424
> [   16.350910] [c00000000111ff90] [c00000000000d560] start_here_common+0x1c/0x3c
> [   16.351302] Instruction dump:
> [   16.351659] 4182000c 39400001 48000008 894d0932 714a0001 39400008
> 408223b4 718a4000
> [   16.351782] 7c2a0b78 3821fcf0 41c20008 e82d0910 <0981fcf0> f92101a0
> f9610170 f9810178
> [   16.350674] LR [c000000000074d04] pseries_lpar_idle+0xa4/0x160
> [   16.352526] Oops: Unrecoverable System Reset, sig: 6 [#1]
> [   16.353142] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2 pSeries
> [   16.353575] --- interrupt: 900
> [   16.353629] [c000000006267d10] [c0000000000159fc]
> __switch_to+0x1cc/0x290 (unreliable)
> [   16.353954] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-rc2+ #28
> [   16.353890] [c000000006267d90] [c0000000000179a4] arch_cpu_idle+0x74/0x110
> [   16.354193] NIP:  c000000000009784 LR: c00000000034ee60 CTR: c0000000000096e0
> [   16.354350] REGS: c00000001ff87d60 TRAP: 0100   Not tainted  (5.16.0-rc2+)
> [   16.354497] MSR:  8000000000001031 <SF,ME,IR
> [   16.354351] [c000000006267dd0] [c00000000034e28c] default_idle_call+0x4c/0x90
> [   16.354774] [c000000006267df0] [c0000000000d0b40] do_idle+0x110/0x1d0
> [   16.355001] [c000000006267e50] [c0000000000d0c34] cpu_startup_entry+0x34/0x50
> [   16.355318] [c000000006267e80] [c00000000003e6d0]
> start_secondary+0xc30/0x1060
> [   16.355597] [c000000006267f90] [c00000000000ce54]
> start_secondary_prolog+0x10/0x14
> 


^ permalink raw reply

* Re: [powerpc] ftrace warning kernel/trace/ftrace.c:2068 with code-patching selftests
From: Mark Rutland @ 2022-01-26 14:37 UTC (permalink / raw)
  To: Yinan Liu; +Cc: linuxppc-dev, Sachin Sant, Steven Rostedt
In-Reply-To: <0fa0daec-881a-314b-e28b-3828e80bbd90@linux.alibaba.com>

Hi,

Steve pointed me at this thread over IRC -- I'm not subscribed to this list so
grabbed a copy of the thread thus far via b4.

On Tue, Jan 25, 2022 at 11:20:27AM +0800, Yinan Liu wrote:
> > Yeah, I think it's time to opt in, instead of opting out.

I agree this must be opt-in rather than opt-out.

However, I think most architectures were broken (in at least some
configurations) by commit:

  72b3942a173c387b ("scripts: ftrace - move the sort-processing in ftrace_init")

... and so I don't think this fix is correct as-is, and we might want to revert
that or at least mark is as BROKEN for now.

More on that below.

> > 
> > Something like this:
> > 
> > -- Steve
> > 
> > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> > index c2724d986fa0..5256ebe57451 100644
> > --- a/arch/arm/Kconfig
> > +++ b/arch/arm/Kconfig
> > @@ -82,6 +82,7 @@ config ARM
> >   	select HAVE_EBPF_JIT if !CPU_ENDIAN_BE32
> >   	select HAVE_CONTEXT_TRACKING
> >   	select HAVE_C_RECORDMCOUNT
> > +	select HAVE_BUILDTIME_MCOUNT_SORT
> >   	select HAVE_DEBUG_KMEMLEAK if !XIP_KERNEL
> >   	select HAVE_DMA_CONTIGUOUS if MMU
> >   	select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU

IIUC the 32-bit arm kernel can be relocated at boot time, so I don't believe
this is correct, and I believe any relocatable arm kernel has been broken since
htat was introduced.

> > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> > index c4207cf9bb17..7996548b2b27 100644
> > --- a/arch/arm64/Kconfig
> > +++ b/arch/arm64/Kconfig
> > @@ -166,6 +166,7 @@ config ARM64
> >   	select HAVE_ASM_MODVERSIONS
> >   	select HAVE_EBPF_JIT
> >   	select HAVE_C_RECORDMCOUNT
> > +	select HAVE_BUILDTIME_MCOUNT_SORT
> >   	select HAVE_CMPXCHG_DOUBLE
> >   	select HAVE_CMPXCHG_LOCAL
> >   	select HAVE_CONTEXT_TRACKING

The arm64 kernel is relocatable by default, and has been broken since the
build-time sort was introduced -- I see ftrace test failures, and the
CONFIG_FTRACE_SORT_STARTUP_TEST screams at boot time.

> > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> > index 7399327d1eff..46080dea5dba 100644
> > --- a/arch/x86/Kconfig
> > +++ b/arch/x86/Kconfig
> > @@ -186,6 +186,7 @@ config X86
> >   	select HAVE_CONTEXT_TRACKING_OFFSTACK	if HAVE_CONTEXT_TRACKING
> >   	select HAVE_C_RECORDMCOUNT
> >   	select HAVE_OBJTOOL_MCOUNT		if STACK_VALIDATION
> > +	select HAVE_BUILDTIME_MCOUNT_SORT

Isn't x86 relocatable in some configurations (e.g. for KASLR)?

I can't see how the sort works for those cases, because the mcount_loc entries
are absolute, and either:

* The sorted entries will get overwritten by the unsorted relocation entries,
  and won't be sorted.

* The sorted entries won't get overwritten, but then the absolute address will
  be wrong since they hadn't been relocated.

How does that work?

Thanks,
Mark.

> >   	select HAVE_DEBUG_KMEMLEAK
> >   	select HAVE_DMA_CONTIGUOUS
> >   	select HAVE_DYNAMIC_FTRACE
> > diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> > index 752ed89a293b..7e5b92090faa 100644
> > --- a/kernel/trace/Kconfig
> > +++ b/kernel/trace/Kconfig
> > @@ -70,10 +70,16 @@ config HAVE_C_RECORDMCOUNT
> >   	help
> >   	  C version of recordmcount available?
> > +config HAVE_BUILDTIME_MCOUNT_SORT
> > +       bool
> > +       help
> > +         An architecture selects this if it sorts the mcount_loc section
> > +	 at build time.
> > +
> >   config BUILDTIME_MCOUNT_SORT
> >          bool
> >          default y
> > -       depends on BUILDTIME_TABLE_SORT && !S390
> > +       depends on HAVE_BUILDTIME_MCOUNT_SORT
> >          help
> >            Sort the mcount_loc section at build time.
> 
> LGTM. This will no longer destroy ftrace on other architectures.
> Those arches that we are not sure about can test and enable this function by
> themselves.
> 
> 
> Best regards
> --yinan
> 

^ permalink raw reply

* ppc: hard lockup / hang in v5.17-rc1 under QEMU
From: Miguel Ojeda @ 2022-01-26 14:16 UTC (permalink / raw)
  To: linuxppc-dev, linux-kernel

[-- Attachment #1: Type: text/plain, Size: 7984 bytes --]

Hi PPC folks,

Our ppc64le CI deterministically triggers a hard lockup / hang under
QEMU since v5.17-rc1 (upgrading from v5.16).

Bisecting points to 0faf20a1ad16 ("powerpc/64s/interrupt: Don't enable
MSR[EE] in irq handlers unless perf is in use").

Cheers,
Miguel

[   16.328310] watchdog: CPU 1 detected hard LOCKUP on other CPUs 0
[   16.328955] watchdog: CPU 1 TB:16743325700, last SMP heartbeat
TB:8453096925 (16191ms ago)
[   16.330786] watchdog: CPU 0 Hard LOCKUP
[   16.331078] watchdog: CPU 0 TB:16744720354, last heartbeat
TB:8453109168 (16194ms ago)
[   16.331295] Kernel panic - not syncing: Hard LOCKUP
[   16.331312] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-rc2+ #28
[   16.331729] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.16.0-rc2+ #28
[   16.332294] NIP:  c000000000009784 LR: c00000000034ee60 CTR: c0000000000096e0
[   16.332339] REGS: c00000001ff87d60 TRAP: 0100   Not tainted  (5.16.0-rc2+)
[   16.332410] MSR:  8000000000001031 <SF
[   16.332520] Call Trace:
[   16.334429] ,ME,IR,DR,LE>  CR: 24000088  XER: 20040000
[   16.334770] CFAR: c00000000000977c IRQMASK: 3
[   16.334770] GPR00: c00000000034ee60 c00000000111f590
c00000000111f400 0000000000008002
[   16.334770] GPR04: 0000000000000001 c00000000113f400
c00000000106f400 c00000000110f400
[   16.334770] GPR08: c0000000003af400 0000000024000088
c00000000111f8a0 c000000000011d00
[   16.334770] GPR12: 8000000000009033 c0000000011d0000
0000000000000000 0000000000000000
[   16.334770] GPR16: c00000000110ab90 c0000000010722f0
c000000001142100 0000000000000001
[   16.334770] GPR20: 0000000000000000 000000000000000a
ffffffff00049233 c0000000010722a8
[   16.334770] GPR24: 0000000000000282 c000000001076580
c000000001143a00 0000000004200002
[   16.334770] GPR28: c0000000010b0480 c0000000010722a8
c0000000003b6cfa 00000000015e0000
[   16.334464] [c0000000062675c0] [c0000000003283e0] dump_stack_lvl+0x78/0xb8
[   16.335274] NIP [c000000000009784] decrementer_common_virt+0xa4/0x210
[   16.336451]  (unreliable)
[   16.335629] LR [c00000000034ee60] __do_softirq+0xe0/0x2c4
[   16.336658] [c000000006267600] [c00000000009378c] panic+0x150/0x3a4
[   16.336797] Call Trace:
[   16.337294]
[   16.336809] [c00000000111f590] [c00000000000c6d8]
interrupt_return_srr_kernel+0x8/0xec (unreliable)
[   16.337615] [c00000000111f8a0] [c0000000000d2b24]
trigger_load_balance+0x94/0x480
[   16.337863] [c00000000111f8d0] [c00000000034ee60] __do_softirq+0xe0/0x2c4
[   16.338079] [c00000000111f9c0] [c00000000009b018] irq_exit+0xa8/0x130
[   16.338225] [c00000000111fa00] [c00000000001b590] timer_interrupt+0x1b0/0x200
[   16.338496] [c00000000111fa60] [c0000000000098e8]
decrementer_common_virt+0x208/0x210
[   16.338803] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[   16.339089] NIP:  c000000000072a48 LR: c000000000074d04 CTR: c000000000074c60
[   16.339103] REGS: c00000000111fad0 TRAP: 0900   Not tainted  (5.16.0-rc2+)
[   16.339117] MSR:  8000000002009033 <SF,VEC,EE,ME
[   16.337355] [c0000000062676b0] [c000000000092d78] nmi_panic+0x78/0x90
[   16.339231] ,IR,DR,RI,LE>  CR: 22000888  XER: 00000000
[   16.339354] CFAR: c000000000074d00 IRQMASK: 0
[   16.339354] GPR00: 0000000022000888
[   16.340017]
[   16.340120] [c000000006267710] [c000000000027650]
watchdog_smp_panic+0x420/0x4e0
[   16.340441] [c000000006267800] [c00000000002717c]
watchdog_timer_fn+0xac/0x160
[   16.340804] c00000000111fd70 c00000000111f400
[   16.340715] [c000000006267840] [c0000000001202d8] __run_hrtimer+0xc8/0x190
[   16.341234] 0000000000000000
[   16.341234] GPR04: 0000000000000001 c00000000106f400
0000000000000000 0000000001f40000
[   16.341234] GPR08: 001908b100000000 00000000000002ea
0000000000000000 000000000000006b
[   16.341234] GPR12: c000000000074c60 c0000000011d0000
0000000000000000 0000000000000000
[   16.341234] GPR16: 0000000000000000 0000000000000000
0000000000000000 0000000000000000
[   16.341234] GPR20: 0000000000000000 0000000000000000
0000000000000000 0000000000000000
[   16.341234] GPR24:
[   16.341779]
[   16.342182] c00000000113f400 0000000000000001 c000000001145928
0000000000000001
[   16.342182] GPR28: c0000000010717a0 c000000001071798
c0000000010b0480 00000000015e0000
[   16.342160] [c000000006267890] [c00000000011f300]
hrtimer_run_queues+0x150/0x1c0
[   16.342276] NIP [c000000000072a48] plpar_hcall_norets_notrace+0x18/0x2c
[   16.342783]
[   16.342820] [c000000006267910] [c00000000011cf58]
update_process_times+0x88/0x110
[   16.343127] [c000000006267960] [c00000000012dbc8]
tick_nohz_handler+0xd8/0x150
[   16.344080] [c0000000062679a0] [c00000000001b570] timer_interrupt+0x190/0x200
[   16.344439] [c000000006267a00] [c0000000000098e8]
decrementer_common_virt+0x208/0x210
[   16.342542] LR [c000000000074d04] pseries_lpar_idle+0xa4/0x160
[   16.347000] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[   16.347224] --- interrupt: 900
[   16.347525] NIP:  c000000000072a48 LR: c000000000074d04 CTR: c000000000074c60
[   16.347637] REGS: c000000006267a70 TRAP: 0900   Not tainted  (5.16.0-rc2+)
[   16.347716] MSR:  8000000000009033 <SF,EE,ME,IR,DR,RI,LE
[   16.347269] [c00000000111fd70] [c00000000111fdc0] .TOC.+0x9c0/0xc00
[   16.347871] >  CR: 22000048  XER: 00000000
[   16.347910] CFAR: c000000000074d00 IRQMASK: 0
[   16.347910] GPR00: 0000000022000048 c000000006267d10
c00000000111f400 0000000000000000
[   16.347910] GPR04: 0000000000000001
[   16.348004]  (unreliable)
[   16.348331] c00000000106f400 0000000000000800 0000000000007b26
[   16.348331] GPR08: 0005204180000000 0000000000000000
0000000000000000 000000000000002c
[   16.348331] GPR12: c000000000074c60 c00000001ffe4d00
[   16.348347] [c00000000111fdf0] [c0000000000179a4] arch_cpu_idle+0x74/0x110
[   16.348453] c000000001145a28 c00000000118f400
[   16.348453] GPR16: c000000001070488 c0000000011458d0
c0000000011458d8 0000000000000001
[   16.348453] GPR20: c00000000118f400 0000000000000000
0000000000000000 0000000000000002
[   16.348749]
[   16.349107]
[   16.349107] GPR24: c00000000113f400 0000000000000002
c000000001145928 0000000000000001
[   16.349107] GPR28: c0000000010717a0 c000000001071798
c0000000061aa200 c00000000003d350
[   16.349137] [c00000000111fe30] [c00000000034e28c] default_idle_call+0x4c/0x90
[   16.349398] NIP [c000000000072a48] plpar_hcall_norets_notrace+0x18/0x2c
[   16.349562]
[   16.349771] [c00000000111fe50] [c0000000000d0b40] do_idle+0x110/0x1d0
[   16.349946] [c00000000111feb0] [c0000000000d0c34] cpu_startup_entry+0x34/0x50
[   16.350175] [c00000000111fee0] [c000000000011180] rest_init+0xe0/0x110
[   16.350307] [c00000000111ff10] [c0000000010046e8] start_kernel+0x3ac/0x424
[   16.350910] [c00000000111ff90] [c00000000000d560] start_here_common+0x1c/0x3c
[   16.351302] Instruction dump:
[   16.351659] 4182000c 39400001 48000008 894d0932 714a0001 39400008
408223b4 718a4000
[   16.351782] 7c2a0b78 3821fcf0 41c20008 e82d0910 <0981fcf0> f92101a0
f9610170 f9810178
[   16.350674] LR [c000000000074d04] pseries_lpar_idle+0xa4/0x160
[   16.352526] Oops: Unrecoverable System Reset, sig: 6 [#1]
[   16.353142] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2 pSeries
[   16.353575] --- interrupt: 900
[   16.353629] [c000000006267d10] [c0000000000159fc]
__switch_to+0x1cc/0x290 (unreliable)
[   16.353954] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-rc2+ #28
[   16.353890] [c000000006267d90] [c0000000000179a4] arch_cpu_idle+0x74/0x110
[   16.354193] NIP:  c000000000009784 LR: c00000000034ee60 CTR: c0000000000096e0
[   16.354350] REGS: c00000001ff87d60 TRAP: 0100   Not tainted  (5.16.0-rc2+)
[   16.354497] MSR:  8000000000001031 <SF,ME,IR
[   16.354351] [c000000006267dd0] [c00000000034e28c] default_idle_call+0x4c/0x90
[   16.354774] [c000000006267df0] [c0000000000d0b40] do_idle+0x110/0x1d0
[   16.355001] [c000000006267e50] [c0000000000d0c34] cpu_startup_entry+0x34/0x50
[   16.355318] [c000000006267e80] [c00000000003e6d0]
start_secondary+0xc30/0x1060
[   16.355597] [c000000006267f90] [c00000000000ce54]
start_secondary_prolog+0x10/0x14

[-- Attachment #2: .config --]
[-- Type: application/octet-stream, Size: 35096 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/powerpc 5.16.0-rc2 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="clang version 13.0.0 (https://github.com/llvm/llvm-project.git d7b669b3a30345cfcdb2fde2af6f48aa4b94845d)"
CONFIG_GCC_VERSION=0
CONFIG_CC_IS_CLANG=y
CONFIG_CLANG_VERSION=130000
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23000
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=23000
CONFIG_LLD_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
CONFIG_WERROR=y
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_XZ is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SYSVIPC is not set
# CONFIG_WATCH_QUEUE is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
# CONFIG_USELIB is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_IRQ_MIGRATION=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_MSI_IRQ=y
CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# end of IRQ subsystem

CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_ARCH_HAS_TICK_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CMOS_UPDATE=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
# CONFIG_NO_HZ_FULL is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
# end of Timers subsystem

CONFIG_HAVE_EBPF_JIT=y

#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# end of BPF subsystem

CONFIG_PREEMPT_VOLUNTARY_BUILD=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
# CONFIG_SCHED_CORE is not set

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_NATIVE is not set
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting

CONFIG_CPU_ISOLATION=y

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TREE_SRCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_RCU_NEED_SEGCBLIST=y
# end of RCU Subsystem

# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=16
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13

#
# Scheduler features
#
# end of Scheduler features

CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_CC_HAS_INT128=y
# CONFIG_CGROUPS is not set
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_RD_GZIP is not set
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
# CONFIG_RD_XZ is not set
# CONFIG_RD_LZO is not set
# CONFIG_RD_LZ4 is not set
# CONFIG_RD_ZSTD is not set
# CONFIG_BOOT_CONFIG is not set
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION=y
# CONFIG_LD_DEAD_CODE_DATA_ELIMINATION is not set
CONFIG_LD_ORPHAN_WARN=y
CONFIG_SYSCTL=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_EXPERT=y
# CONFIG_MULTIUSER is not set
# CONFIG_SGETMASK_SYSCALL is not set
# CONFIG_SYSFS_SYSCALL is not set
# CONFIG_FHANDLE is not set
# CONFIG_POSIX_TIMERS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
# CONFIG_PCSPKR_PLATFORM is not set
CONFIG_BASE_FULL=y
# CONFIG_FUTEX is not set
# CONFIG_EPOLL is not set
# CONFIG_SIGNALFD is not set
# CONFIG_TIMERFD is not set
# CONFIG_EVENTFD is not set
# CONFIG_SHMEM is not set
# CONFIG_AIO is not set
# CONFIG_IO_URING is not set
# CONFIG_ADVISE_SYSCALLS is not set
# CONFIG_MEMBARRIER is not set
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
# CONFIG_USERFAULTFD is not set
CONFIG_ARCH_HAS_MEMBARRIER_CALLBACKS=y
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
# CONFIG_KCMP is not set
# CONFIG_RSEQ is not set
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y
# CONFIG_PC104 is not set

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# end of Kernel Performance Events And Counters

# CONFIG_VM_EVENT_COUNTERS is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
# CONFIG_SLAB_MERGE_DEFAULT is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set
CONFIG_SLAB_FREELIST_HARDENED=y
# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_PROFILING is not set
# end of General setup

CONFIG_PPC64=y

#
# Processor support
#
CONFIG_PPC_BOOK3S_64=y
# CONFIG_PPC_BOOK3E_64 is not set
CONFIG_GENERIC_CPU=y
# CONFIG_POWER7_CPU is not set
# CONFIG_POWER8_CPU is not set
# CONFIG_POWER9_CPU is not set
CONFIG_PPC_BOOK3S=y
CONFIG_PPC_FPU_REGS=y
CONFIG_PPC_FPU=y
CONFIG_ALTIVEC=y
CONFIG_VSX=y
CONFIG_PPC_64S_HASH_MMU=y
CONFIG_PPC_RADIX_MMU=y
CONFIG_PPC_RADIX_MMU_DEFAULT=y
CONFIG_PPC_KUEP=y
CONFIG_PPC_KUAP=y
# CONFIG_PPC_KUAP_DEBUG is not set
CONFIG_PPC_PKEY=y
CONFIG_PPC_MM_SLICES=y
CONFIG_PPC_HAVE_PMU_SUPPORT=y
# CONFIG_PMU_SYSFS is not set
CONFIG_PPC_PERF_CTRS=y
CONFIG_FORCE_SMP=y
CONFIG_SMP=y
CONFIG_NR_CPUS=2
CONFIG_PPC_DOORBELL=y
# end of Processor support

# CONFIG_CPU_BIG_ENDIAN is not set
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_PPC64_BOOT_WRAPPER=y
CONFIG_64BIT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MAX=29
CONFIG_ARCH_MMAP_RND_BITS_MIN=14
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=13
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=7
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_NR_IRQS=512
CONFIG_NMI_IPI=y
CONFIG_PPC_WATCHDOG=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_PPC=y
CONFIG_PPC_BARRIER_NOSPEC=y
CONFIG_EARLY_PRINTK=y
CONFIG_PANIC_TIMEOUT=-1
# CONFIG_COMPAT is not set
CONFIG_SCHED_OMIT_FRAME_POINTER=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_PPC_UDBG_16550=y
CONFIG_AUDIT_ARCH=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_SUSPEND_NONZERO_CPU=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_PPC_DAWR=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_PPC_MSI_BITMAP=y
CONFIG_PPC_XICS=y
CONFIG_PPC_ICP_NATIVE=y
CONFIG_PPC_ICP_HV=y
CONFIG_PPC_ICS_RTAS=y
CONFIG_PPC_XIVE=y
CONFIG_PPC_XIVE_SPAPR=y

#
# Platform support
#
# CONFIG_PPC_POWERNV is not set
CONFIG_PPC_PSERIES=y
CONFIG_PARAVIRT_SPINLOCKS=y
CONFIG_PPC_SPLPAR=y
# CONFIG_PSERIES_ENERGY is not set
CONFIG_IO_EVENT_IRQ=y
# CONFIG_LPARCFG is not set
# CONFIG_PPC_SMLPAR is not set
# CONFIG_HV_PERF_CTRS is not set
CONFIG_IBMVIO=y
# CONFIG_PPC_SVM is not set
CONFIG_PPC_VAS=y
# CONFIG_KVM_GUEST is not set
# CONFIG_EPAPR_PARAVIRT is not set
CONFIG_PPC_OF_BOOT_TRAMPOLINE=y
# CONFIG_PPC_DT_CPU_FTRS is not set
# CONFIG_UDBG_RTAS_CONSOLE is not set
CONFIG_PPC_SMP_MUXED_IPI=y
CONFIG_MPIC=y
# CONFIG_MPIC_MSGR is not set
CONFIG_PPC_I8259=y
CONFIG_PPC_RTAS=y
CONFIG_RTAS_ERROR_LOGGING=y
CONFIG_PPC_RTAS_DAEMON=y
# CONFIG_RTAS_PROC is not set
CONFIG_EEH=y

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
# end of CPU Frequency scaling

#
# CPUIdle driver
#

#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# end of CPU Idle
# end of CPUIdle driver

# CONFIG_GEN_RTC is not set
# end of Platform support

#
# Kernel options
#
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
# CONFIG_PPC_TRANSACTIONAL_MEM is not set
# CONFIG_LD_HEAD_STUB_CATCH is not set
CONFIG_HOTPLUG_CPU=y
CONFIG_PPC_QUEUED_SPINLOCKS=y
CONFIG_ARCH_CPU_PROBE_RELEASE=y
# CONFIG_PPC64_SUPPORTS_MEMORY_FAILURE is not set
# CONFIG_KEXEC is not set
CONFIG_RELOCATABLE=y
# CONFIG_RELOCATABLE_TEST is not set
# CONFIG_CRASH_DUMP is not set
# CONFIG_FA_DUMP is not set
# CONFIG_IRQ_ALL_CPUS is not set
# CONFIG_NUMA is not set
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ILLEGAL_POINTER_VALUE=0x5deadbeef0000000
# CONFIG_PPC_4K_PAGES is not set
CONFIG_PPC_64K_PAGES=y
CONFIG_PPC_PAGE_SHIFT=16
CONFIG_THREAD_SHIFT=15
CONFIG_DATA_SHIFT=24
CONFIG_FORCE_MAX_ZONEORDER=9
# CONFIG_PPC_SUBPAGE_PROT is not set
# CONFIG_PPC_PROT_SAO_LPAR is not set
CONFIG_SCHED_SMT=y
CONFIG_PPC_DENORMALISATION=y
CONFIG_CMDLINE=""
CONFIG_EXTRA_TARGETS=""
# CONFIG_SUSPEND is not set
# CONFIG_PM is not set
# CONFIG_PPC_MEM_KEYS is not set
CONFIG_PPC_RTAS_FILTER=y
# end of Kernel options

CONFIG_ISA_DMA_API=y

#
# Bus options
#
CONFIG_GENERIC_ISA_DMA=y
# CONFIG_FSL_LBC is not set
# end of Bus options

CONFIG_NONSTATIC_KERNEL=y
CONFIG_PAGE_OFFSET=0xc000000000000000
CONFIG_KERNEL_START=0xc000000000000000
CONFIG_PHYSICAL_START=0x00000000
CONFIG_ARCH_RANDOM=y
# CONFIG_VIRTUALIZATION is not set

#
# General architecture-dependent options
#
CONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_NMI_WATCHDOG=y
CONFIG_HAVE_HARDLOCKUP_DETECTOR_ARCH=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
CONFIG_MMU_GATHER_TABLE_FREE=y
CONFIG_MMU_GATHER_RCU_TABLE_FREE=y
CONFIG_MMU_GATHER_PAGE_SIZE=y
CONFIG_ARCH_WANT_IRQS_OFF_ACTIVATE_MM=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_ARCH_WEAK_RELEASE_ACQUIRE=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
# CONFIG_SECCOMP is not set
CONFIG_LTO_NONE=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOVE_PUD=y
CONFIG_HAVE_MOVE_PMD=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_HUGE_VMALLOC=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_ARCH_MMAP_RND_BITS=14
CONFIG_HAVE_RELIABLE_STACKTRACE=y
CONFIG_HAVE_ARCH_NVRAM_OPS=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND=y
# CONFIG_COMPAT_32BIT_TIME is not set
CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_ARCH_HAS_PHYS_TO_DMA=y
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y

#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling
# end of General architecture-dependent options

CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_MODULES_TREE_LOOKUP=y
# CONFIG_BLOCK is not set
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_ARCH_HAS_MMIOWB=y
CONFIG_MMIOWB=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y

#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
CONFIG_ELFCORE=y
# CONFIG_BINFMT_SCRIPT is not set
# CONFIG_BINFMT_MISC is not set
# CONFIG_COREDUMP is not set
# end of Executable file formats

#
# Memory Management options
#
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_FAST_GUP=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_COMPACTION=y
# CONFIG_PAGE_REPORTING is not set
CONFIG_MIGRATION=y
CONFIG_ARCH_ENABLE_THP_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_TRANSPARENT_HUGEPAGE=y
# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
# CONFIG_CLEANCACHE is not set
# CONFIG_CMA is not set
# CONFIG_ZPOOL is not set
# CONFIG_ZSMALLOC is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_PTE_DEVMAP=y
# CONFIG_PERCPU_STATS is not set

#
# GUP_TEST needs to have DEBUG_FS enabled
#
CONFIG_ARCH_HAS_PTE_SPECIAL=y

#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options

# CONFIG_NET is not set

#
# Device Drivers
#
CONFIG_HAVE_PCI=y
CONFIG_FORCE_PCI=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_SYSCALL=y
# CONFIG_PCIEPORTBUS is not set
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
# CONFIG_PCIE_PTM is not set
CONFIG_PCI_MSI=y
CONFIG_PCI_MSI_IRQ_DOMAIN=y
CONFIG_PCI_MSI_ARCH_FALLBACKS=y
CONFIG_PCI_QUIRKS=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_STUB is not set
# CONFIG_PCI_IOV is not set
# CONFIG_PCI_PRI is not set
# CONFIG_PCI_PASID is not set
# CONFIG_PCIE_BUS_TUNE_OFF is not set
CONFIG_PCIE_BUS_DEFAULT=y
# CONFIG_PCIE_BUS_SAFE is not set
# CONFIG_PCIE_BUS_PERFORMANCE is not set
# CONFIG_PCIE_BUS_PEER2PEER is not set
# CONFIG_HOTPLUG_PCI is not set

#
# PCI controller drivers
#
# CONFIG_PCI_FTPCI100 is not set
# CONFIG_PCI_HOST_GENERIC is not set
# CONFIG_PCIE_XILINX is not set
# CONFIG_PCIE_MICROCHIP_HOST is not set

#
# DesignWare PCI Core Support
#
# CONFIG_PCIE_DW_PLAT_HOST is not set
# CONFIG_PCI_MESON is not set
# end of DesignWare PCI Core Support

#
# Mobiveil PCIe Core Support
#
# end of Mobiveil PCIe Core Support

#
# Cadence PCIe controllers support
#
# CONFIG_PCIE_CADENCE_PLAT_HOST is not set
# CONFIG_PCI_J721E_HOST is not set
# end of Cadence PCIe controllers support
# end of PCI controller drivers

#
# PCI Endpoint
#
# CONFIG_PCI_ENDPOINT is not set
# end of PCI Endpoint

#
# PCI switch controller drivers
#
# CONFIG_PCI_SW_SWITCHTEC is not set
# end of PCI switch controller drivers

# CONFIG_CXL_BUS is not set
# CONFIG_PCCARD is not set
# CONFIG_RAPIDIO is not set

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y

#
# Firmware loader
#
# CONFIG_FW_LOADER is not set
# end of Firmware loader

# CONFIG_ALLOW_DEV_COREDUMP is not set
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
# end of Generic Driver Options

#
# Bus devices
#
# CONFIG_MHI_BUS is not set
# end of Bus devices

#
# Firmware Drivers
#

#
# ARM System Control and Management Interface Protocol
#
# end of ARM System Control and Management Interface Protocol

# CONFIG_FIRMWARE_MEMMAP is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

# CONFIG_GNSS is not set
# CONFIG_MTD is not set
CONFIG_DTC=y
CONFIG_OF=y
# CONFIG_OF_UNITTEST is not set
CONFIG_OF_FLATTREE=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_KOBJ=y
CONFIG_OF_DYNAMIC=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_IRQ=y
CONFIG_OF_RESERVED_MEM=y
# CONFIG_OF_OVERLAY is not set
CONFIG_OF_DMA_DEFAULT_COHERENT=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set

#
# NVME Support
#
# end of NVME Support

#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBMVMC is not set
# CONFIG_PHANTOM is not set
# CONFIG_TIFM_CORE is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_HP_ILO is not set
# CONFIG_SRAM is not set
# CONFIG_DW_XDATA_PCIE is not set
# CONFIG_PCI_ENDPOINT_TEST is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# end of EEPROM support

# CONFIG_CB710_CORE is not set

#
# Texas Instruments shared transport line discipline
#
# end of Texas Instruments shared transport line discipline

#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_BCM_VK is not set
# CONFIG_MISC_ALCOR_PCI is not set
# CONFIG_MISC_RTSX_PCI is not set
# CONFIG_HABANA_AI is not set
# CONFIG_PVPANIC is not set
# end of Misc devices

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# end of SCSI device support

# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
# end of IEEE 1394 (FireWire) support

# CONFIG_MACINTOSH_DRIVERS is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
# CONFIG_CONSOLE_TRANSLATIONS is not set
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
# CONFIG_UNIX98_PTYS is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_LDISC_AUTOLOAD is not set

#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
# CONFIG_SERIAL_8250_FINTEK is not set
CONFIG_SERIAL_8250_CONSOLE=y
# CONFIG_SERIAL_8250_PCI is not set
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=1
# CONFIG_SERIAL_8250_EXTENDED is not set
CONFIG_SERIAL_8250_FSL=y
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_RT288X is not set
# CONFIG_SERIAL_OF_PLATFORM is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_ICOM is not set
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SIFIVE is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_XILINX_PS_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_CONEXANT_DIGICOLOR is not set
# end of Serial drivers

# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_PPC_EPAPR_HV_BYTECHAN is not set
# CONFIG_NOZOMI is not set
# CONFIG_NULL_TTY is not set
CONFIG_HVC_DRIVER=y
CONFIG_HVC_IRQ=y
CONFIG_HVC_CONSOLE=y
# CONFIG_HVC_OLD_HVSI is not set
# CONFIG_HVC_RTAS is not set
# CONFIG_HVC_UDBG is not set
# CONFIG_HVCS is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_TTY_PRINTK is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IBM_BSR is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_APPLICOM is not set
# CONFIG_DEVMEM is not set
# CONFIG_NVRAM is not set
CONFIG_DEVPORT=y
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_XILLYBUS is not set
# CONFIG_RANDOM_TRUST_CPU is not set
# CONFIG_RANDOM_TRUST_BOOTLOADER is not set
# end of Character devices

#
# I2C support
#
# CONFIG_I2C is not set
# end of I2C support

# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
# CONFIG_PPS is not set

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK_OPTIONAL=y

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support

# CONFIG_PINCTRL is not set
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_ATMEL_FLEXCOM is not set
# CONFIG_MFD_ATMEL_HLCDC is not set
# CONFIG_MFD_MADERA is not set
# CONFIG_MFD_HI6421_PMIC is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_RDC321X is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_TQMX86 is not set
# CONFIG_MFD_VX855 is not set
# end of Multifunction device drivers

# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set

#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support

# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
# CONFIG_AGP is not set
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=16
# CONFIG_DRM is not set
CONFIG_DRM_DEBUG_MODESET_LOCK=y

#
# ARM devices
#
# end of ARM devices

#
# Frame buffer Devices
#
# CONFIG_FB is not set
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# end of Backlight & LCD device support

#
# Console display driver support
#
# CONFIG_VGA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
# end of Console display driver support
# end of Graphics support

# CONFIG_SOUND is not set

#
# HID support
#
# CONFIG_HID is not set
# end of HID support

CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_SUPPORT is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options

# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
# CONFIG_VIRTIO_MENU is not set
# CONFIG_VHOST_MENU is not set

#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support

# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
# CONFIG_GOLDFISH is not set
# CONFIG_COMMON_CLK is not set
# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
# CONFIG_MICROCHIP_PIT64B is not set
# end of Clock Source drivers

# CONFIG_MAILBOX is not set
# CONFIG_IOMMU_SUPPORT is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers

# CONFIG_SOUNDWIRE is not set

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers

#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# CONFIG_QUICC_ENGINE is not set
# end of NXP/Freescale QorIQ SoC drivers

#
# i.MX SoC drivers
#
# end of i.MX SoC drivers

#
# Enable LiteX SoC Builder specific drivers
#
# CONFIG_LITEX_SOC_CONTROLLER is not set
# end of Enable LiteX SoC Builder specific drivers

#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers

# CONFIG_SOC_TI is not set

#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_NTB is not set
# CONFIG_VME_BUS is not set
# CONFIG_PWM is not set

#
# IRQ chip support
#
CONFIG_IRQCHIP=y
# CONFIG_AL_FIC is not set
# end of IRQ chip support

# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set

#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms

# CONFIG_PHY_CADENCE_DPHY is not set
# CONFIG_PHY_CADENCE_SALVO is not set
# CONFIG_PHY_FSL_IMX8MQ_USB is not set
# CONFIG_PHY_MIXEL_MIPI_DPHY is not set
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# end of PHY Subsystem

# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set

#
# Performance monitor support
#
# end of Performance monitor support

# CONFIG_RAS is not set
# CONFIG_USB4 is not set

#
# Android
#
CONFIG_ANDROID=y
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android

# CONFIG_DAX is not set
# CONFIG_NVMEM is not set

#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support

# CONFIG_FPGA is not set
# CONFIG_FSI is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# end of Device Drivers

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_VALIDATE_FS_PARSER is not set
# CONFIG_EXPORTFS_BLOCK_OPS is not set
# CONFIG_FILE_LOCKING is not set
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# CONFIG_FSCACHE is not set
# end of Caches

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_ARCH_SUPPORTS_HUGETLBFS=y
# CONFIG_HUGETLBFS is not set
CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems

# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NLS is not set
# CONFIG_UNICODE is not set
# end of File systems

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITYFS is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="lockdown,yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor,bpf"

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_CC_HAS_AUTO_VAR_INIT_PATTERN=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO=y
CONFIG_INIT_STACK_NONE=y
# CONFIG_INIT_STACK_ALL_PATTERN is not set
# CONFIG_INIT_STACK_ALL_ZERO is not set
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
# end of Memory initialization
# end of Kernel hardening options
# end of Security options

# CONFIG_CRYPTO is not set

#
# Library routines
#
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_DEFLATE=y
# CONFIG_XZ_DEC is not set
CONFIG_XARRAY_MULTI=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS=y
CONFIG_DMA_OPS_BYPASS=y
CONFIG_ARCH_HAS_DMA_MAP_DIRECT=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_DMA_DECLARE_COHERENT=y
CONFIG_SWIOTLB=y
# CONFIG_DMA_RESTRICTED_POOL is not set
# CONFIG_DMA_API_DEBUG is not set
CONFIG_IOMMU_HELPER=y
# CONFIG_IRQ_POLL is not set
CONFIG_LIBFDT=y
CONFIG_HAVE_GENERIC_VDSO=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_VDSO_TIME_NS=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_MEMREMAP_COMPAT_ALIGN=y
CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
CONFIG_ARCH_HAS_COPY_MC=y
CONFIG_ARCH_STACKWALK=y
CONFIG_STACKDEPOT=y
CONFIG_STACK_HASH_ORDER=20
# end of Library routines

#
# Kernel hacking
#

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options

#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO=y
# CONFIG_DEBUG_INFO_REDUCED is not set
# CONFIG_DEBUG_INFO_COMPRESSED is not set
# CONFIG_DEBUG_INFO_SPLIT is not set
# CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
CONFIG_DEBUG_INFO_DWARF4=y
# CONFIG_DEBUG_INFO_BTF is not set
# CONFIG_GDB_SCRIPTS is not set
CONFIG_FRAME_WARN=2048
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_HEADERS_INSTALL is not set
# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
# CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_64B is not set
# CONFIG_VMLINUX_MAP is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_DEBUG_FS is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_UBSAN is not set
CONFIG_HAVE_KCSAN_COMPILER=y
# end of Generic Kernel Debugging Instruments

CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_MISC is not set

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_PAGE_OWNER is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_ARCH_HAS_DEBUG_WX=y
# CONFIG_DEBUG_WX is not set
CONFIG_GENERIC_PTDUMP=y
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_SCHED_STACK_END_CHECK is not set
CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VM_PGTABLE is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_DEBUG_PER_CPU_MAPS is not set
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_STACKOVERFLOW is not set
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# end of Memory Debugging

# CONFIG_DEBUG_SHIRQ is not set

#
# Debug Oops, Lockups and Hangs
#
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_ON_OOPS_VALUE=1
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=1
CONFIG_HARDLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=1
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=1
CONFIG_WQ_WATCHDOG=y
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
# CONFIG_SCHED_DEBUG is not set
# CONFIG_SCHEDSTATS is not set
# end of Scheduler Debugging

# CONFIG_DEBUG_TIMEKEEPING is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
# CONFIG_WW_MUTEX_SELFTEST is not set
# CONFIG_SCF_TORTURE_TEST is not set
# CONFIG_CSD_LOCK_WAIT_DEBUG is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)

# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set

#
# Debug kernel data structures
#
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PLIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Debug kernel data structures

# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
# CONFIG_RCU_SCALE_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_REF_SCALE_TEST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# end of RCU Debugging

# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
# CONFIG_LATENCYTOP is not set
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
# CONFIG_SAMPLES is not set
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y

#
# powerpc Debugging
#
CONFIG_PPC_DISABLE_WERROR=y
CONFIG_PRINT_STACK_DEPTH=64
# CONFIG_CODE_PATCHING_SELFTEST is not set
CONFIG_JUMP_LABEL_FEATURE_CHECKS=y
# CONFIG_JUMP_LABEL_FEATURE_CHECK_DEBUG is not set
# CONFIG_FTR_FIXUP_SELFTEST is not set
# CONFIG_MSI_BITMAP_SELFTEST is not set
# CONFIG_PPC_IRQ_SOFT_MASK_DEBUG is not set
# CONFIG_PPC_RFI_SRR_DEBUG is not set
# CONFIG_XMON is not set
# CONFIG_BOOTX_TEXT is not set
# CONFIG_PPC_EARLY_DEBUG is not set
# CONFIG_PPC_FAST_ENDIAN_SWITCH is not set
# end of powerpc Debugging

#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_ARCH_USE_MEMTEST=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage
# end of Kernel hacking

^ permalink raw reply

* Re: WARN_ON() is buggy for 32 bit systems
From: Dan Carpenter @ 2022-01-26 13:49 UTC (permalink / raw)
  To: Christophe Leroy; +Cc: linuxppc-dev@lists.ozlabs.org
In-Reply-To: <8bfa7bbe-7343-2d2f-d20b-d4789523c89c@csgroup.eu>

On Wed, Jan 26, 2022 at 12:21:49PM +0000, Christophe Leroy wrote:
> The code is enclosed in a #ifdef CONFIG_PPC64, it is not used for PPC32:
> 
> /arch/powerpc/include/asm/bug.h
>    99  #ifdef CONFIG_PPC64

Ah...

You know, life would be a lot easier for me personally if we added an
#ifndef __CHECKER__ as well...  I can't compile PowerPC code so I can't
test a patch like that.

regards,
dan carpenter


^ permalink raw reply

* Re: [PATCH 0/3] status: TTY status message request
From: Greg KH @ 2022-01-26 13:45 UTC (permalink / raw)
  To: Walt Drummond
  Cc: dalias, linux-ia64, linux-sh, linux-mips, James.Bottomley,
	jcmvbkbc, paulus, sparclinux, agordeev, ar, jirislaby, linux-arch,
	linux-s390, arnd, deller, ysato, mattst88, borntraeger,
	linux-xtensa, gor, hca, ink, rth, chris, tsbogend, linux-parisc,
	linux-kernel, linux-alpha, linuxppc-dev, davem
In-Reply-To: <20220118044259.764945-1-walt@drummond.us>

On Mon, Jan 17, 2022 at 08:42:57PM -0800, Walt Drummond wrote:
> This patchset adds TTY status message request feature to the n_tty
> line dicipline.  This feature prints a brief message containing basic
> system and process group information to a user's TTY in response to a
> new control character in the line dicipline (default Ctrl-T) or the
> TIOCSTAT ioctl.  The message contains the current system load, the
> name and PID of an interesting process in the forground process group,
> it's run time, percent CPU usage and RSS.  An example of this message
> is:
> 
>   load: 0.31  cmd: sleep 3616843 [sleeping] 0.36r 0.00u 0.00s 0% 696k
> 
> User API visible changes are limited to:
>  - The addition of VSTATUS in termios.c_cc[]
>  - The addition of NOKERNINFO bit in termios.l_cflags
>  - The addition of the TIOCSTAT ioctl number
> 
> None of these changes break the existing kernel api as the termios
> structure on all architectures has enough space in the control
> character array (.c_cc) for the new character, and the other changes
> are space agnostic.
> 
> This feature is in many other Unix-like systems, both current and
> historical.  In other implementations, this feature would also send
> SIGINFO to the process group; this implementation does not.
> 
> Walt Drummond (3):
>   vstatus: Allow the n_tty line dicipline to write to a user tty
>   vstatus: Add user space API definitions for VSTATUS, NOKERNINFO and
>     TIOCSTAT
>   status: Display an informational message when the VSTATUS character is
>     pressed or TIOCSTAT ioctl is called.
> 
>  arch/alpha/include/asm/termios.h         |   4 +-
>  arch/alpha/include/uapi/asm/ioctls.h     |   1 +
>  arch/alpha/include/uapi/asm/termbits.h   |  34 ++---
>  arch/ia64/include/asm/termios.h          |   4 +-
>  arch/ia64/include/uapi/asm/termbits.h    |  34 ++---
>  arch/mips/include/asm/termios.h          |   4 +-
>  arch/mips/include/uapi/asm/ioctls.h      |   1 +
>  arch/mips/include/uapi/asm/termbits.h    |  36 ++---
>  arch/parisc/include/asm/termios.h        |   4 +-
>  arch/parisc/include/uapi/asm/ioctls.h    |   1 +
>  arch/parisc/include/uapi/asm/termbits.h  |  34 ++---
>  arch/powerpc/include/asm/termios.h       |   4 +-
>  arch/powerpc/include/uapi/asm/ioctls.h   |   2 +
>  arch/powerpc/include/uapi/asm/termbits.h |  34 ++---
>  arch/s390/include/asm/termios.h          |   4 +-
>  arch/sh/include/uapi/asm/ioctls.h        |   1 +
>  arch/sparc/include/uapi/asm/ioctls.h     |   1 +
>  arch/sparc/include/uapi/asm/termbits.h   |  38 +++---
>  arch/xtensa/include/uapi/asm/ioctls.h    |   1 +
>  drivers/tty/Makefile                     |   2 +-
>  drivers/tty/n_tty.c                      | 113 +++++++++++-----
>  drivers/tty/n_tty_status.c               | 162 +++++++++++++++++++++++
>  drivers/tty/tty_io.c                     |   2 +-
>  include/asm-generic/termios.h            |   4 +-
>  include/linux/tty.h                      | 123 ++++++++---------
>  include/uapi/asm-generic/ioctls.h        |   1 +
>  include/uapi/asm-generic/termbits.h      |  34 ++---
>  27 files changed, 461 insertions(+), 222 deletions(-)
>  create mode 100644 drivers/tty/n_tty_status.c
> 
> -- 
> 2.30.2
> 

You forgot to cc: me on patch 2/3, which would be needed if I was to
take them all.

Please fix up patch 2 and resend the whole series.

thanks,

greg k-h

^ permalink raw reply

* WARN_ON() is buggy for 32 bit systems
From: Dan Carpenter @ 2022-01-26 11:56 UTC (permalink / raw)
  To: Michael Ellerman; +Cc: linuxppc-dev


Hi Michael,

Commit e432fe97f3e5 ("powerpc/bug: Cast to unsigned long before passing
to inline asm") breaks WARN_ON() for 32 bit systems.

arch/powerpc/include/asm/bug.h
   109  #define WARN_ON(x) ({                                           \
   110          bool __ret_warn_on = false;                             \
   111          do {                                                    \
   112                  if (__builtin_constant_p((x))) {                \
   113                          if (!(x))                               \
   114                                  break;                          \
   115                          __WARN();                               \
   116                          __ret_warn_on = true;                   \
   117                  } else {                                        \
   118                          __label__ __label_warn_on;              \
   119                                                                  \
   120                          WARN_ENTRY(PPC_TLNEI " %4, 0",          \
   121                                     BUGFLAG_WARNING | BUGFLAG_TAINT(TAINT_WARN), \
   122                                     __label_warn_on,             \
   123                                     "r" ((__force long)(x)));    \
                                                         ^^^^
If the code is "if (WARN_ON(some_u64)) {" then the cast to long will
truncate away the high bits so it's wrong.  (Or at least that's how it
works on x86, I'm working on a work around for Smatch to be able to
parse this WARN_ON().  I don't know anything about PowerPC.)

   124                          break;                                  \
   125  __label_warn_on:                                                \
   126                          __ret_warn_on = true;                   \
   127                  }                                               \
   128          } while (0);                                            \
   129          unlikely(__ret_warn_on);                                \
   130  })

regards,
dan carpenter


^ permalink raw reply

* Re: WARN_ON() is buggy for 32 bit systems
From: Christophe Leroy @ 2022-01-26 12:21 UTC (permalink / raw)
  To: Dan Carpenter, Michael Ellerman; +Cc: linuxppc-dev@lists.ozlabs.org
In-Reply-To: <20220126115616.GY1978@kadam>

Hi Dan,

Le 26/01/2022 à 12:56, Dan Carpenter a écrit :
> 
> Hi Michael,
> 
> Commit e432fe97f3e5 ("powerpc/bug: Cast to unsigned long before passing
> to inline asm") breaks WARN_ON() for 32 bit systems.

I think you missed commit db87a7199229 ("powerpc/bug: Remove specific 
powerpc BUG_ON() and WARN_ON() on PPC32")

> 
> arch/powerpc/include/asm/bug.h
>     109  #define WARN_ON(x) ({                                           \
>     110          bool __ret_warn_on = false;                             \
>     111          do {                                                    \
>     112                  if (__builtin_constant_p((x))) {                \
>     113                          if (!(x))                               \
>     114                                  break;                          \
>     115                          __WARN();                               \
>     116                          __ret_warn_on = true;                   \
>     117                  } else {                                        \
>     118                          __label__ __label_warn_on;              \
>     119                                                                  \
>     120                          WARN_ENTRY(PPC_TLNEI " %4, 0",          \
>     121                                     BUGFLAG_WARNING | BUGFLAG_TAINT(TAINT_WARN), \
>     122                                     __label_warn_on,             \
>     123                                     "r" ((__force long)(x)));    \
>                                                           ^^^^
> If the code is "if (WARN_ON(some_u64)) {" then the cast to long will
> truncate away the high bits so it's wrong.  (Or at least that's how it
> works on x86, I'm working on a work around for Smatch to be able to
> parse this WARN_ON().  I don't know anything about PowerPC.)

The code is enclosed in a #ifdef CONFIG_PPC64, it is not used for PPC32:

/arch/powerpc/include/asm/bug.h
   99  #ifdef CONFIG_PPC64
  100  #define BUG_ON(x) do {						\
...
  109  #define WARN_ON(x) ({						\
...
  132  #define HAVE_ARCH_BUG_ON
  133  #define HAVE_ARCH_WARN_ON
  134  #endif


Christophe

> 
>     124                          break;                                  \
>     125  __label_warn_on:                                                \
>     126                          __ret_warn_on = true;                   \
>     127                  }                                               \
>     128          } while (0);                                            \
>     129          unlikely(__ret_warn_on);                                \
>     130  })
> 
> regards,
> dan carpenter
> 

^ permalink raw reply

* Re: [PATCH 1/3] lib/raid6/test/Makefile: Use `$(pound)` instead of `\#` for Make 4.3
From: Paul Menzel @ 2022-01-26 12:12 UTC (permalink / raw)
  To: David Laight; +Cc: linux-raid, Song Liu, linuxppc-dev, Matt Brown
In-Reply-To: <0214ae2639174812948a631ac4e142c8@AcuMS.aculab.com>

Dear David,


Am 26.01.22 um 13:06 schrieb David Laight:
> From: Paul Menzel
>> Sent: 26 January 2022 11:42
> ..
>> +pound := \#
> 
> Please use 'hash' not 'pound'.
> Only american greengrocers use that horrid name.
> 
> A 'pound' is '£'.

Sure, I can change that, if you send a patch cleaning this up for the 
other files already using that in the tree? ;-) Or can it be different 
all over the Linux code base?


Kind regards,

Paul


PS:

> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
> Registration No: 1397386 (Wales)

If you care, the standard signature delimiter is `-- ` [1].


[1]: https://en.wikipedia.org/wiki/Signature_block#Standard_delimiter

^ permalink raw reply

* RE: [PATCH 1/3] lib/raid6/test/Makefile: Use `$(pound)` instead of `\#` for Make 4.3
From: David Laight @ 2022-01-26 12:06 UTC (permalink / raw)
  To: 'Paul Menzel', Song Liu
  Cc: linux-raid@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	Matt Brown
In-Reply-To: <20220126114144.370517-1-pmenzel@molgen.mpg.de>

From: Paul Menzel
> Sent: 26 January 2022 11:42
> 
..
> +pound := \#

Please use 'hash' not 'pound'.
Only american greengrocers use that horrid name.

A 'pound' is '£'.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)

^ permalink raw reply

* [PATCH 3/3] lib/raid6/test: Rename variable to avoid `raid6_call` name clash
From: Paul Menzel @ 2022-01-26 11:41 UTC (permalink / raw)
  To: Song Liu; +Cc: linux-raid, Paul Menzel, Matt Brown, linuxppc-dev
In-Reply-To: <20220126114144.370517-1-pmenzel@molgen.mpg.de>

On Ubuntu 21.10 (ppc64le) building `raid6test` with gcc (Ubuntu
11.2.0-7ubuntu2) 11.2.0 fails with the error below.

    $ cd lib/raid6/test
    $ make
    […]
    gcc -I.. -I ../../../include -g -O2                      -I../../../arch/powerpc/include -DCONFIG_ALTIVEC -o raid6test test.c raid6.a
    /usr/bin/ld: raid6.a(algos.o):/dev/shm/linux/lib/raid6/test/algos.c:28: multiple definition of `raid6_call'; /scratch/local/ccHnUnID.o:/dev/shm/linux/lib/raid6/test/test.c:22: first defined here
    collect2: error: ld returned 1 exit status
    make: *** [Makefile:74: raid6test] Error 1

Renaming the variable in `test.c` to `raid6_call2` works around that.

The resulting binary terminates with a segmentation fault:

    $ ./raid6test
    using recovery intx1
    Segmentation fault (core dumped)
    $ dmesg | tail -3
    [75519.758988] raid6test[1891185]: segfault (11) at 0 nip 0 lr 708aa3fe197c code 1 in libc.so.6[708aa3ca0000+260000]
    [75519.759006] raid6test[1891185]: code: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
    [75519.759024] raid6test[1891185]: code: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX

Cc: Matt Brown <matthew.brown.dev@gmail.com>
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
---
 lib/raid6/test/test.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/raid6/test/test.c b/lib/raid6/test/test.c
index a3cf071941ab..937d2a8bb294 100644
--- a/lib/raid6/test/test.c
+++ b/lib/raid6/test/test.c
@@ -19,7 +19,7 @@
 #define NDISKS		16	/* Including P and Q */
 
 const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
-struct raid6_calls raid6_call;
+struct raid6_calls raid6_call2;
 
 char *dataptrs[NDISKS];
 char data[NDISKS][PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
@@ -71,7 +71,7 @@ static int test_disks(int i, int j)
 		erra = errb = 0;
 	} else {
 		printf("algo=%-8s  faila=%3d(%c)  failb=%3d(%c)  %s\n",
-		       raid6_call.name,
+		       raid6_call2.name,
 		       i, disk_type(i),
 		       j, disk_type(j),
 		       (!erra && !errb) ? "OK" :
@@ -107,30 +107,30 @@ int main(int argc, char *argv[])
 			if ((*algo)->valid && !(*algo)->valid())
 				continue;
 
-			raid6_call = **algo;
+			raid6_call2 = **algo;
 
 			/* Nuke syndromes */
 			memset(data[NDISKS-2], 0xee, 2*PAGE_SIZE);
 
 			/* Generate assumed good syndrome */
-			raid6_call.gen_syndrome(NDISKS, PAGE_SIZE,
+			raid6_call2.gen_syndrome(NDISKS, PAGE_SIZE,
 						(void **)&dataptrs);
 
 			for (i = 0; i < NDISKS-1; i++)
 				for (j = i+1; j < NDISKS; j++)
 					err += test_disks(i, j);
 
-			if (!raid6_call.xor_syndrome)
+			if (!raid6_call2.xor_syndrome)
 				continue;
 
 			for (p1 = 0; p1 < NDISKS-2; p1++)
 				for (p2 = p1; p2 < NDISKS-2; p2++) {
 
 					/* Simulate rmw run */
-					raid6_call.xor_syndrome(NDISKS, p1, p2, PAGE_SIZE,
+					raid6_call2.xor_syndrome(NDISKS, p1, p2, PAGE_SIZE,
 								(void **)&dataptrs);
 					makedata(p1, p2);
-					raid6_call.xor_syndrome(NDISKS, p1, p2, PAGE_SIZE,
+					raid6_call2.xor_syndrome(NDISKS, p1, p2, PAGE_SIZE,
                                                                 (void **)&dataptrs);
 
 					for (i = 0; i < NDISKS-1; i++)
-- 
2.34.1


^ permalink raw reply related

* [PATCH 2/3] lib/raid6: Include <asm/ppc-opcode.h> for `VPERMXOR`
From: Paul Menzel @ 2022-01-26 11:41 UTC (permalink / raw)
  To: Song Liu; +Cc: linux-raid, Paul Menzel, Matt Brown, linuxppc-dev
In-Reply-To: <20220126114144.370517-1-pmenzel@molgen.mpg.de>

On Ubuntu 21.10 (ppc64le) building `raid6test` with gcc (Ubuntu
11.2.0-7ubuntu2) 11.2.0 fails with the error below.

    gcc -I.. -I ../../../include -g -O2                      -I../../../arch/powerpc/include -DCONFIG_ALTIVEC -c -o vpermxor1.o vpermxor1.c
    vpermxor1.c: In function ‘raid6_vpermxor1_gen_syndrome_real’:
    vpermxor1.c:64:29: error: expected string literal before ‘VPERMXOR’
       64 |                         asm(VPERMXOR(%0,%1,%2,%3):"=v"(wq0):"v"(gf_high), "v"(gf_low), "v"(wq0));
          |                             ^~~~~~~~
    make: *** [Makefile:58: vpermxor1.o] Error 1

So, include the header `asm/ppc-opcode.h` defining this macro also when
not building the Linux kernel but only this too.

Cc: Matt Brown <matthew.brown.dev@gmail.com>
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
---
 lib/raid6/vpermxor.uc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/raid6/vpermxor.uc b/lib/raid6/vpermxor.uc
index 10475dc423c1..1bfb127fbfe8 100644
--- a/lib/raid6/vpermxor.uc
+++ b/lib/raid6/vpermxor.uc
@@ -24,9 +24,9 @@
 #ifdef CONFIG_ALTIVEC
 
 #include <altivec.h>
+#include <asm/ppc-opcode.h>
 #ifdef __KERNEL__
 #include <asm/cputable.h>
-#include <asm/ppc-opcode.h>
 #include <asm/switch_to.h>
 #endif
 
-- 
2.34.1


^ permalink raw reply related

* [PATCH 1/3] lib/raid6/test/Makefile: Use `$(pound)` instead of `\#` for Make 4.3
From: Paul Menzel @ 2022-01-26 11:41 UTC (permalink / raw)
  To: Song Liu; +Cc: linux-raid, Paul Menzel, Matt Brown, linuxppc-dev

Buidling `raid6test` on Ubuntu 21.10 (ppc64le) with GNU Make 4.3 shows the
errors below:

    $ cd lib/raid6/test/
    $ make
    <stdin>:1:1: error: stray ‘\’ in program
    <stdin>:1:2: error: stray ‘#’ in program
    <stdin>:1:11: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘<’ token
    cp -f ../int.uc int.uc
    awk -f ../unroll.awk -vN=1 < int.uc > int1.c
    gcc -I.. -I ../../../include -g -O2                      -c -o int1.o int1.c
    awk -f ../unroll.awk -vN=2 < int.uc > int2.c
    gcc -I.. -I ../../../include -g -O2                      -c -o int2.o int2.c
    awk -f ../unroll.awk -vN=4 < int.uc > int4.c
    gcc -I.. -I ../../../include -g -O2                      -c -o int4.o int4.c
    awk -f ../unroll.awk -vN=8 < int.uc > int8.c
    gcc -I.. -I ../../../include -g -O2                      -c -o int8.o int8.c
    awk -f ../unroll.awk -vN=16 < int.uc > int16.c
    gcc -I.. -I ../../../include -g -O2                      -c -o int16.o int16.c
    awk -f ../unroll.awk -vN=32 < int.uc > int32.c
    gcc -I.. -I ../../../include -g -O2                      -c -o int32.o int32.c
    rm -f raid6.a
    ar cq raid6.a int1.o int2.o int4.o int8.o int16.o int32.o recov.o algos.o tables.o
    ranlib raid6.a
    gcc -I.. -I ../../../include -g -O2                      -o raid6test test.c raid6.a
    /usr/bin/ld: raid6.a(algos.o):/dev/shm/linux/lib/raid6/test/algos.c:28: multiple definition of `raid6_call'; /scratch/local/ccIJjN8s.o:/dev/shm/linux/lib/raid6/test/test.c:22: first defined here
    collect2: error: ld returned 1 exit status
    make: *** [Makefile:72: raid6test] Error 1

The errors come from the `HAS_ALTIVEC` test, which fails, and the POWER
optimized versions are not built. That’s also reason nobody noticed on the
other architectures.

GNU Make 4.3 does not remove the backslash anymore. From the 4.3 release
announcment:

> * WARNING: Backward-incompatibility!
>   Number signs (#) appearing inside a macro reference or function invocation
>   no longer introduce comments and should not be escaped with backslashes:
>   thus a call such as:
>     foo := $(shell echo '#')
>   is legal.  Previously the number sign needed to be escaped, for example:
>     foo := $(shell echo '\#')
>   Now this latter will resolve to "\#".  If you want to write makefiles
>   portable to both versions, assign the number sign to a variable:
>     H := \#
>     foo := $(shell echo '$H')
>   This was claimed to be fixed in 3.81, but wasn't, for some reason.
>   To detect this change search for 'nocomment' in the .FEATURES variable.

So, do the same as commit 9564a8cf422d (Kbuild: fix # escaping in .cmd
files for future Make) and commit 929bef467771 (bpf: Use $(pound) instead
of \# in Makefiles) and define and use a `$(pound)` variable.

Reference for the change in make:
https://git.savannah.gnu.org/cgit/make.git/commit/?id=c6966b323811c37acedff05b57

Cc: Matt Brown <matthew.brown.dev@gmail.com>
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
---
 lib/raid6/test/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
index a4c7cd74cff5..4fb7700a741b 100644
--- a/lib/raid6/test/Makefile
+++ b/lib/raid6/test/Makefile
@@ -4,6 +4,8 @@
 # from userspace.
 #
 
+pound := \#
+
 CC	 = gcc
 OPTFLAGS = -O2			# Adjust as desired
 CFLAGS	 = -I.. -I ../../../include -g $(OPTFLAGS)
@@ -42,7 +44,7 @@ else ifeq ($(HAS_NEON),yes)
         OBJS   += neon.o neon1.o neon2.o neon4.o neon8.o recov_neon.o recov_neon_inner.o
         CFLAGS += -DCONFIG_KERNEL_MODE_NEON=1
 else
-        HAS_ALTIVEC := $(shell printf '\#include <altivec.h>\nvector int a;\n' |\
+        HAS_ALTIVEC := $(shell printf '$(pound)include <altivec.h>\nvector int a;\n' |\
                          gcc -c -x c - >/dev/null && rm ./-.o && echo yes)
         ifeq ($(HAS_ALTIVEC),yes)
                 CFLAGS += -I../../../arch/powerpc/include
-- 
2.34.1


^ permalink raw reply related

* Re: [PATCH 2/2] PCI/DPC: Disable DPC when link is in L2/L3 ready, L2 and L3 state
From: Mika Westerberg @ 2022-01-26 11:10 UTC (permalink / raw)
  To: Kai-Heng Feng
  Cc: linux-pci, linux-kernel, koba.ko, Oliver O'Halloran, bhelgaas,
	linuxppc-dev
In-Reply-To: <20220126071853.1940111-2-kai.heng.feng@canonical.com>

Hi,

On Wed, Jan 26, 2022 at 03:18:52PM +0800, Kai-Heng Feng wrote:
> Since TLP and DLLP transmission is disabled for a Link in L2/L3 Ready,
> L2 and L3, and DPC depends on AER, so also disable DPC here.

Here too I think it is good to mention that the DPC "service" never
implemented the PM hooks in the first place

> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>

One minor comment below, but other than that looks good,

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

> ---
>  drivers/pci/pcie/dpc.c | 61 +++++++++++++++++++++++++++++++-----------
>  1 file changed, 45 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
> index 3e9afee02e8d1..9585c10b7c577 100644
> --- a/drivers/pci/pcie/dpc.c
> +++ b/drivers/pci/pcie/dpc.c
> @@ -343,13 +343,34 @@ void pci_dpc_init(struct pci_dev *pdev)
>  	}
>  }
>  
> +static void dpc_enable(struct pcie_device *dev)
> +{
> +	struct pci_dev *pdev = dev->port;
> +	u16 ctl;
> +
> +	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
> +

Drop the empty line here.

> +	ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN;
> +	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
> +}
> +
> +static void dpc_disable(struct pcie_device *dev)
> +{
> +	struct pci_dev *pdev = dev->port;
> +	u16 ctl;
> +
> +	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
> +	ctl &= ~(PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN);
> +	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
> +}

^ permalink raw reply

* Re: [PATCH 1/2] PCI/AER: Disable AER when link is in L2/L3 ready, L2 and L3 state
From: Mika Westerberg @ 2022-01-26 11:03 UTC (permalink / raw)
  To: Kai-Heng Feng
  Cc: Joerg Roedel, Lalithambika Krishnakumar, linux-pci, linux-kernel,
	koba.ko, Oliver O'Halloran, bhelgaas, linuxppc-dev, Lu Baolu
In-Reply-To: <20220126071853.1940111-1-kai.heng.feng@canonical.com>

Hi,

On Wed, Jan 26, 2022 at 03:18:51PM +0800, Kai-Heng Feng wrote:
> Commit 50310600ebda ("iommu/vt-d: Enable PCI ACS for platform opt in
> hint") enables ACS, and some platforms lose its NVMe after resume from
> S3:
> [   50.947816] pcieport 0000:00:1b.0: DPC: containment event, status:0x1f01 source:0x0000
> [   50.947817] pcieport 0000:00:1b.0: DPC: unmasked uncorrectable error detected
> [   50.947829] pcieport 0000:00:1b.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Receiver ID)
> [   50.947830] pcieport 0000:00:1b.0:   device [8086:06ac] error status/mask=00200000/00010000
> [   50.947831] pcieport 0000:00:1b.0:    [21] ACSViol                (First)
> [   50.947841] pcieport 0000:00:1b.0: AER: broadcast error_detected message
> [   50.947843] nvme nvme0: frozen state error detected, reset controller
> 
> It happens right after ACS gets enabled during resume.

Is this really because of the above commit of due the fact that AER
"service" never implemented the PM hooks in the first place ;-)
> 
> There's another case, when Thunderbolt reaches D3cold:
> [   30.100211] pcieport 0000:00:1d.0: AER: Uncorrected (Non-Fatal) error received: 0000:00:1d.0
> [   30.100251] pcieport 0000:00:1d.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID)
> [   30.100256] pcieport 0000:00:1d.0:   device [8086:7ab0] error status/mask=00100000/00004000
> [   30.100262] pcieport 0000:00:1d.0:    [20] UnsupReq               (First)
> [   30.100267] pcieport 0000:00:1d.0: AER:   TLP Header: 34000000 08000052 00000000 00000000
> [   30.100372] thunderbolt 0000:0a:00.0: AER: can't recover (no error_detected callback)
> [   30.100401] xhci_hcd 0000:3e:00.0: AER: can't recover (no error_detected callback)
> [   30.100427] pcieport 0000:00:1d.0: AER: device recovery failed
> 
> Since PCIe spec "5.2 Link State Power Management" states that TLP and DLLP
> transmission is disabled for a Link in L2/L3 Ready (D3hot), L2 (D3cold with aux
> power) and L3 (D3cold), so disable AER to avoid the noises from turning power
> rails on/off.

I think more accurate here is to say when the topology behind the root
port enters low power states. Reason here is that you can't really tell
from the OS standpoint whether the link went into L1 or L2/3 before the
ACPI power resource is turned off.

> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=209149
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215453
> Fixes: 50310600ebda ("iommu/vt-d: Enable PCI ACS for platform opt in hint")
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>

Thanks for fixing this!

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

^ permalink raw reply

* [Bug 215389] pagealloc: memory corruption at building glibc-2.33 and running its' testsuite
From: bugzilla-daemon @ 2022-01-26  7:55 UTC (permalink / raw)
  To: linuxppc-dev
In-Reply-To: <bug-215389-206035@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=215389

--- Comment #8 from Christophe Leroy (christophe.leroy@csgroup.eu) ---
Looking closer, in fact that might be a false positive.

The huge difference with that bad commit is that:
- Before the commit, the kernel is built _without_ CONFIG_VMAP_STACK
- After the commit, the kernel is built _with_ CONFIG_VMAP_STACK

Would you be able to perform following tests:
- Disable VMAP_STACK and see if the problem still occurs.
- Disable ADB_PMU and see it the problem still occurs.

With the version which preceeds the bad commit, can you disable ADB_PMU and
enable VMAP_STACK and see what happens ?

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.

^ permalink raw reply

* [PATCH 2/2] PCI/DPC: Disable DPC when link is in L2/L3 ready, L2 and L3 state
From: Kai-Heng Feng @ 2022-01-26  7:18 UTC (permalink / raw)
  To: bhelgaas
  Cc: linuxppc-dev, linux-pci, linux-kernel, koba.ko, Kai-Heng Feng,
	Oliver O'Halloran, mika.westerberg
In-Reply-To: <20220126071853.1940111-1-kai.heng.feng@canonical.com>

Since TLP and DLLP transmission is disabled for a Link in L2/L3 Ready,
L2 and L3, and DPC depends on AER, so also disable DPC here.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
 drivers/pci/pcie/dpc.c | 61 +++++++++++++++++++++++++++++++-----------
 1 file changed, 45 insertions(+), 16 deletions(-)

diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index 3e9afee02e8d1..9585c10b7c577 100644
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -343,13 +343,34 @@ void pci_dpc_init(struct pci_dev *pdev)
 	}
 }
 
+static void dpc_enable(struct pcie_device *dev)
+{
+	struct pci_dev *pdev = dev->port;
+	u16 ctl;
+
+	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
+
+	ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN;
+	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+}
+
+static void dpc_disable(struct pcie_device *dev)
+{
+	struct pci_dev *pdev = dev->port;
+	u16 ctl;
+
+	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
+	ctl &= ~(PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN);
+	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+}
+
 #define FLAG(x, y) (((x) & (y)) ? '+' : '-')
 static int dpc_probe(struct pcie_device *dev)
 {
 	struct pci_dev *pdev = dev->port;
 	struct device *device = &dev->device;
 	int status;
-	u16 ctl, cap;
+	u16 cap;
 
 	if (!pcie_aer_is_native(pdev) && !pcie_ports_dpc_native)
 		return -ENOTSUPP;
@@ -364,10 +385,7 @@ static int dpc_probe(struct pcie_device *dev)
 	}
 
 	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CAP, &cap);
-	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
-
-	ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN;
-	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+	dpc_enable(dev);
 	pci_info(pdev, "enabled with IRQ %d\n", dev->irq);
 
 	pci_info(pdev, "error containment capabilities: Int Msg #%d, RPExt%c PoisonedTLP%c SwTrigger%c RP PIO Log %d, DL_ActiveErr%c\n",
@@ -380,22 +398,33 @@ static int dpc_probe(struct pcie_device *dev)
 	return status;
 }
 
-static void dpc_remove(struct pcie_device *dev)
+static int dpc_suspend(struct pcie_device *dev)
 {
-	struct pci_dev *pdev = dev->port;
-	u16 ctl;
+	dpc_disable(dev);
+	return 0;
+}
 
-	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, &ctl);
-	ctl &= ~(PCI_EXP_DPC_CTL_EN_FATAL | PCI_EXP_DPC_CTL_INT_EN);
-	pci_write_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CTL, ctl);
+static int dpc_resume(struct pcie_device *dev)
+{
+	dpc_enable(dev);
+	return 0;
+}
+
+static void dpc_remove(struct pcie_device *dev)
+{
+	dpc_disable(dev);
 }
 
 static struct pcie_port_service_driver dpcdriver = {
-	.name		= "dpc",
-	.port_type	= PCIE_ANY_PORT,
-	.service	= PCIE_PORT_SERVICE_DPC,
-	.probe		= dpc_probe,
-	.remove		= dpc_remove,
+	.name			= "dpc",
+	.port_type		= PCIE_ANY_PORT,
+	.service		= PCIE_PORT_SERVICE_DPC,
+	.probe			= dpc_probe,
+	.suspend		= dpc_suspend,
+	.resume			= dpc_resume,
+	.runtime_suspend	= dpc_suspend,
+	.runtime_resume		= dpc_resume,
+	.remove			= dpc_remove,
 };
 
 int __init pcie_dpc_init(void)
-- 
2.33.1


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