[GIT PULL] x86 fixes

Ingo Molnar
2010-01-31T17:20:08Z

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Linus,

Please pull the latest x86-fixes-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-fixes-for-linus

out-of-topic modifications in x86-fixes-for-linus:
--------------------------------------------------
drivers/char/agp/amd64-agp.c # 61684ce: x86/agp: Fix agp_amd64_init regre
drivers/char/uv_mmtimer.c # aca3bb5: x86, UV: Fix RTC latency bug by r
lib/dma-debug.c # aeb583d: lib/dma-debug.c: mark file-local

Thanks,

Ingo

------------------>
Andi Kleen (1):
oprofile/x86: add Xeon 7500 series support

David Härdeman (1):
x86: Add quirk for Intel DG45FC board to avoid low memory corruption

Dimitri Sivanich (1):
x86, UV: Fix RTC latency bug by reading replicated cachelines

FUJITA Tomonori (1):
x86/agp: Fix agp_amd64_init regression

Joerg Roedel (4):
x86/amd-iommu: Fix possible integer overflow
x86/amd-iommu: Fix NULL pointer dereference in __detach_device()
x86/amd-iommu: Fix IOMMU-API initialization for iommu=pt
x86/amd-iommu: Fix deassignment of a device from the pt_domain

Leann Ogasawara (1):
x86: Add Dell OptiPlex 760 reboot quirk

Suravee Suthikulpanit (1):
oprofile/x86: fix crash when profiling more than 28 events

Thiago Farina (1):
lib/dma-debug.c: mark file-local struct symbol static.

arch/x86/include/asm/amd_iommu_proto.h | 1 +
arch/x86/kernel/amd_iommu.c | 23 ++++++++++++++++-------
arch/x86/kernel/amd_iommu_init.c | 3 +++
arch/x86/kernel/reboot.c | 9 +++++++++
arch/x86/kernel/setup.c | 14 +++++++++++---
arch/x86/kernel/uv_time.c | 13 ++++++++++++-
arch/x86/oprofile/nmi_int.c | 3 ++-
drivers/char/agp/amd64-agp.c | 13 +++++++++----
drivers/char/uv_mmtimer.c | 18 +++++++++++-------
lib/dma-debug.c | 2 +-
10 files changed, 75 insertions(+), 24 deletions(-)

diff --git a/arch/x86/include/asm/amd_iommu_proto.h b/arch/x86/include/asm/amd_iommu_proto.h
index 4d817f9..d2544f1 100644
--- a/arch/x86/include/asm/amd_iommu_proto.h
+++ b/arch/x86/include/asm/amd_iommu_proto.h
@@ -31,6 +31,7 @@ extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
extern int amd_iommu_init_devices(void);
extern void amd_iommu_uninit_devices(void);
extern void amd_iommu_init_notifier(void);
+extern void amd_iommu_init_api(void);
#ifndef CONFIG_AMD_IOMMU_STATS

static inline void amd_iommu_stats_init(void) { }
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 23824fe..adb0ba0 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -980,7 +980,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom,
{
int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT;
struct amd_iommu *iommu;
- int i;
+ unsigned long i;

#ifdef CONFIG_IOMMU_STRESS
populate = false;
@@ -1489,11 +1489,14 @@ static void __detach_device(struct device *dev)
{
struct iommu_dev_data *dev_data = get_dev_data(dev);
struct iommu_dev_data *alias_data;
+ struct protection_domain *domain;
unsigned long flags;

BUG_ON(!dev_data->domain);

- spin_lock_irqsave(&dev_data->domain->lock, flags);
+ domain = dev_data->domain;
+
+ spin_lock_irqsave(&domain->lock, flags);

if (dev_data->alias != dev) {
alias_data = get_dev_data(dev_data->alias);
@@ -1504,13 +1507,15 @@ static void __detach_device(struct device *dev)
if (atomic_dec_and_test(&dev_data->bind))
do_detach(dev);

- spin_unlock_irqrestore(&dev_data->domain->lock, flags);
+ spin_unlock_irqrestore(&domain->lock, flags);

/*
* If we run in passthrough mode the device must be assigned to the
- * passthrough domain if it is detached from any other domain
+ * passthrough domain if it is detached from any other domain.
+ * Make sure we can deassign from the pt_domain itself.
*/
- if (iommu_pass_through && dev_data->domain == NULL)
+ if (iommu_pass_through &&
+ (dev_data->domain == NULL && domain != pt_domain))
__attach_device(dev, pt_domain);
}

@@ -2218,6 +2223,12 @@ static struct dma_map_ops amd_iommu_dma_ops = {
/*
* The function which clues the AMD IOMMU driver into dma_ops.
*/
+
+void __init amd_iommu_init_api(void)
+{
+ register_iommu(&amd_iommu_ops);
+}
+
int __init amd_iommu_init_dma_ops(void)
{
struct amd_iommu *iommu;
@@ -2253,8 +2264,6 @@ int __init amd_iommu_init_dma_ops(void)
/* Make the driver finally visible to the drivers */
dma_ops = &amd_iommu_dma_ops;

- register_iommu(&amd_iommu_ops);
-
amd_iommu_stats_init();

return 0;
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index fb490ce..9dc91b4 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1292,9 +1292,12 @@ static int __init amd_iommu_init(void)
ret = amd_iommu_init_passthrough();
else
ret = amd_iommu_init_dma_ops();
+
if (ret)
goto free;

+ amd_iommu_init_api();
+
amd_iommu_init_notifier();

enable_iommus();
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 1545bc0..704bddc 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -203,6 +203,15 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "0T656F"),
},
},
+ { /* Handle problems with rebooting on Dell OptiPlex 760 with 0G919G*/
+ .callback = set_bios_reboot,
+ .ident = "Dell OptiPlex 760",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 760"),
+ DMI_MATCH(DMI_BOARD_NAME, "0G919G"),
+ },
+ },
{ /* Handle problems with rebooting on Dell 2400's */
.callback = set_bios_reboot,
.ident = "Dell PowerEdge 2400",
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index f7b8b98..5d9e40c 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -642,19 +642,27 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"),
},
},
- {
/*
- * AMI BIOS with low memory corruption was found on Intel DG45ID board.
- * It hase different DMI_BIOS_VENDOR = "Intel Corp.", for now we will
+ * AMI BIOS with low memory corruption was found on Intel DG45ID and
+ * DG45FC boards.
+ * It has a different DMI_BIOS_VENDOR = "Intel Corp.", for now we will
* match only DMI_BOARD_NAME and see if there is more bad products
* with this vendor.
*/
+ {
.callback = dmi_low_memory_corruption,
.ident = "AMI BIOS",
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "DG45ID"),
},
},
+ {
+ .callback = dmi_low_memory_corruption,
+ .ident = "AMI BIOS",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "DG45FC"),
+ },
+ },
#endif
{}
};
diff --git a/arch/x86/kernel/uv_time.c b/arch/x86/kernel/uv_time.c
index 3c84aa0..2b75ef6 100644
--- a/arch/x86/kernel/uv_time.c
+++ b/arch/x86/kernel/uv_time.c
@@ -282,10 +282,21 @@ static int uv_rtc_unset_timer(int cpu, int force)

/*
* Read the RTC.
+ *
+ * Starting with HUB rev 2.0, the UV RTC register is replicated across all
+ * cachelines of it's own page. This allows faster simultaneous reads
+ * from a given socket.
*/
static cycle_t uv_read_rtc(struct clocksource *cs)
{
- return (cycle_t)uv_read_local_mmr(UVH_RTC);
+ unsigned long offset;
+
+ if (uv_get_min_hub_revision_id() == 1)
+ offset = 0;
+ else
+ offset = (uv_blade_processor_id() * L1_CACHE_BYTES) % PAGE_SIZE;
+
+ return (cycle_t)uv_read_local_mmr(UVH_RTC | offset);
}

/*
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index cb88b1a..3347f69 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -222,7 +222,7 @@ static void nmi_cpu_switch(void *dummy)

/* move to next set */
si += model->num_counters;
- if ((si > model->num_virt_counters) || (counter_config[si].count == 0))
+ if ((si >= model->num_virt_counters) || (counter_config[si].count == 0))
per_cpu(switch_index, cpu) = 0;
else
per_cpu(switch_index, cpu) = si;
@@ -598,6 +598,7 @@ static int __init ppro_init(char **cpu_type)
case 15: case 23:
*cpu_type = "i386/core_2";
break;
+ case 0x2e:
case 26:
spec = &op_arch_perfmon_spec;
*cpu_type = "i386/core_i7";
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 1afb896..34cf04e 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -729,9 +729,6 @@ int __init agp_amd64_init(void)
if (agp_off)
return -EINVAL;

- if (gart_iommu_aperture)
- return agp_bridges_found ? 0 : -ENODEV;
-
err = pci_register_driver(&agp_amd64_pci_driver);
if (err < 0)
return err;
@@ -768,6 +765,14 @@ int __init agp_amd64_init(void)
return err;
}

+static int __init agp_amd64_mod_init(void)
+{
+ if (gart_iommu_aperture)
+ return agp_bridges_found ? 0 : -ENODEV;
+
+ return agp_amd64_init();
+}
+
static void __exit agp_amd64_cleanup(void)
{
if (gart_iommu_aperture)
@@ -777,7 +782,7 @@ static void __exit agp_amd64_cleanup(void)
pci_unregister_driver(&agp_amd64_pci_driver);
}

-module_init(agp_amd64_init);
+module_init(agp_amd64_mod_init);
module_exit(agp_amd64_cleanup);

MODULE_AUTHOR("Dave Jones <davej@redhat.com>, Andi Kleen");
diff --git a/drivers/char/uv_mmtimer.c b/drivers/char/uv_mmtimer.c
index 867b67b..c7072ba 100644
--- a/drivers/char/uv_mmtimer.c
+++ b/drivers/char/uv_mmtimer.c
@@ -89,13 +89,17 @@ static long uv_mmtimer_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case MMTIMER_GETOFFSET: /* offset of the counter */
/*
- * UV RTC register is on its own page
+ * Starting with HUB rev 2.0, the UV RTC register is
+ * replicated across all cachelines of it's own page.
+ * This allows faster simultaneous reads from a given socket.
+ *
+ * The offset returned is in 64 bit units.
*/
- if (PAGE_SIZE <= (1 << 16))
- ret = ((UV_LOCAL_MMR_BASE | UVH_RTC) & (PAGE_SIZE-1))
- / 8;
+ if (uv_get_min_hub_revision_id() == 1)
+ ret = 0;
else
- ret = -ENOSYS;
+ ret = ((uv_blade_processor_id() * L1_CACHE_BYTES) %
+ PAGE_SIZE) / 8;
break;

case MMTIMER_GETRES: /* resolution of the clock in 10^-15 s */
@@ -115,8 +119,8 @@ static long uv_mmtimer_ioctl(struct file *file, unsigned int cmd,
ret = hweight64(UVH_RTC_REAL_TIME_CLOCK_MASK);
break;

- case MMTIMER_MMAPAVAIL: /* can we mmap the clock into userspace? */
- ret = (PAGE_SIZE <= (1 << 16)) ? 1 : 0;
+ case MMTIMER_MMAPAVAIL:
+ ret = 1;
break;

case MMTIMER_GETCOUNTER:
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 7d2f0b3..ba8b670 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -587,7 +587,7 @@ out_unlock:
return count;
}

-const struct file_operations filter_fops = {
+static const struct file_operations filter_fops = {
.read = filter_read,
.write = filter_write,
};