From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>
Subject: [PATCH 4.8 33/37] powerpc: Set missing wakeup bit in LPCR on POWER9
Date: Wed, 30 Nov 2016 10:30:10 +0100 [thread overview]
Message-ID: <20161130092731.229323550@linuxfoundation.org> (raw)
In-Reply-To: <20161130092729.623248210@linuxfoundation.org>
4.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
commit 7a43906f5cbfb74712af168988455e350707e310 upstream.
There is a new bit, LPCR_PECE_HVEE (Hypervisor Virtualization Exit
Enable), which controls wakeup from STOP states on Hypervisor
Virtualization Interrupts (which happen to also be all external
interrupts in host or bare metal mode).
It needs to be set or we will miss wakeups.
Fixes: 9baaef0a22c8 ("powerpc/irq: Add support for HV virtualization interrupts")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[mpe: Rename it to HVEE to match the name in the ISA]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/include/asm/reg.h | 1 +
arch/powerpc/kernel/cpu_setup_power.S | 8 ++++----
2 files changed, 5 insertions(+), 4 deletions(-)
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -355,6 +355,7 @@
#define LPCR_PECE0 ASM_CONST(0x0000000000004000) /* ext. exceptions can cause exit */
#define LPCR_PECE1 ASM_CONST(0x0000000000002000) /* decrementer can cause exit */
#define LPCR_PECE2 ASM_CONST(0x0000000000001000) /* machine check etc can cause exit */
+#define LPCR_PECE_HVEE ASM_CONST(0x0000400000000000) /* P9 Wakeup on HV interrupts */
#define LPCR_MER ASM_CONST(0x0000000000000800) /* Mediated External Exception */
#define LPCR_MER_SH 11
#define LPCR_TC ASM_CONST(0x0000000000000200) /* Translation control */
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -98,8 +98,8 @@ _GLOBAL(__setup_cpu_power9)
li r0,0
mtspr SPRN_LPID,r0
mfspr r3,SPRN_LPCR
- ori r3, r3, LPCR_PECEDH
- ori r3, r3, LPCR_HVICE
+ LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE)
+ or r3, r3, r4
bl __init_LPCR
bl __init_HFSCR
bl __init_tlb_power9
@@ -118,8 +118,8 @@ _GLOBAL(__restore_cpu_power9)
li r0,0
mtspr SPRN_LPID,r0
mfspr r3,SPRN_LPCR
- ori r3, r3, LPCR_PECEDH
- ori r3, r3, LPCR_HVICE
+ LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE)
+ or r3, r3, r4
bl __init_LPCR
bl __init_HFSCR
bl __init_tlb_power9
next prev parent reply other threads:[~2016-11-30 9:32 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20161130093010epcas2p3047cf63814e74dfcc79f43d37b446ae0@epcas2p3.samsung.com>
2016-11-30 9:29 ` [PATCH 4.8 00/37] 4.8.12-stable review Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 07/37] usb: chipidea: move the lock initialization to core file Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 08/37] USB: serial: cp210x: add ID for the Zone DPMX Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 09/37] USB: serial: ftdi_sio: add support for TI CC3200 LaunchPad Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 10/37] Fix USB CB/CBI storage devices with CONFIG_VMAP_STACK=y Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 11/37] scsi: mpt3sas: Fix secure erase premature termination Greg Kroah-Hartman
2016-11-30 16:49 ` Martin K. Petersen
2016-12-01 7:10 ` Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 12/37] tile: avoid using clocksource_cyc2ns with absolute cycle count Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 13/37] cfg80211: limit scan results cache size Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 15/37] drm/radeon: fix power state when port pm is unavailable (v2) Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 16/37] apparmor: fix change_hat not finding hat after policy replacement Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 17/37] NFSv4.x: hide array-bounds warning Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 18/37] x86/fpu: Fix invalid FPU ptrace state after execve() Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 19/37] x86/traps: Ignore high word of regs->cs in early_fixup_exception() Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 20/37] perf/core: Fix address filter parser Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 21/37] perf/x86/intel: Cure bogus unwind from PEBS entries Greg Kroah-Hartman
2016-11-30 9:29 ` [PATCH 4.8 22/37] thermal/powerclamp: add back module device table Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 23/37] parisc: Fix races in parisc_setup_cache_timing() Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 24/37] parisc: Switch to generic sched_clock implementation Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 25/37] parisc: Fix race in pci-dma.c Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 26/37] parisc: Also flush data TLB in flush_icache_page_asm Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 27/37] mmc: sdhci-of-esdhc: fixup PRESENT_STATE read Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 28/37] mpi: Fix NULL ptr dereference in mpi_powm() [ver #3] Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 29/37] X.509: Fix double free in x509_cert_parse() " Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 30/37] xc2028: Fix use-after-free bug properly Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 31/37] device-dax: check devm_nsio_enable() return value Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 32/37] device-dax: fail all private mapping attempts Greg Kroah-Hartman
2016-11-30 9:30 ` Greg Kroah-Hartman [this message]
2016-11-30 9:30 ` [PATCH 4.8 34/37] powerpc/mm: Fixup kernel read only mapping Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 35/37] powerpc/boot: Fix the early OPAL console wrappers Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 36/37] can: bcm: fix support for CAN FD frames Greg Kroah-Hartman
2016-11-30 9:30 ` [PATCH 4.8 37/37] mm, oom: stop pre-mature high-order OOM killer invocations Greg Kroah-Hartman
[not found] ` <20161130092730.460938123@linuxfoundation.org>
2016-11-30 10:51 ` [PATCH 4.8 14/37] drm/amdgpu: fix power state when port pm is unavailable Peter Wu
2016-11-30 11:53 ` Greg Kroah-Hartman
2016-12-05 0:11 ` Peter Wu
2016-12-05 14:46 ` Greg Kroah-Hartman
2016-11-30 16:04 ` [PATCH 4.8 00/37] 4.8.12-stable review Shuah Khan
2016-12-01 7:14 ` Greg Kroah-Hartman
2016-11-30 23:34 ` Guenter Roeck
2016-12-01 7:15 ` Greg Kroah-Hartman
[not found] ` <583ed167.6602c20a.c3129.a6b8@mx.google.com>
[not found] ` <m2oa0wkjlk.fsf@baylibre.com>
2016-12-01 7:11 ` Greg Kroah-Hartman
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