AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/iommu
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Suravee Suthikulpanit 318fe78253 IOMMU, AMD Family15h Model10-1Fh erratum 746 Workaround 
The IOMMU may stop processing page translations due to a perceived lack
of credits for writing upstream peripheral page service request (PPR)
or event logs. If the L2B miscellaneous clock gating feature is enabled
the IOMMU does not properly register credits after the log request has
completed, leading to a potential system hang.

BIOSes are supposed to disable L2B micellaneous clock gating by setting
L2_L2B_CK_GATE_CONTROL[CKGateL2BMiscDisable](D0F2xF4_x90[2]) = 1b. This
patch corrects that for those which do not enable this workaround.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-01-28 15:26:54 +01:00
..
amd_iommu_init.c IOMMU, AMD Family15h Model10-1Fh erratum 746 Workaround 2013-01-28 15:26:54 +01:00
amd_iommu_proto.h iommu/amd: Add initialization routines for AMD interrupt remapping 2012-09-28 17:43:52 +02:00
amd_iommu_types.h iommu/amd: Properly account for virtual aliases in IOMMU groups 2012-10-24 17:30:22 +02:00
amd_iommu_v2.c IOMMU Updates for Linux v3.6-rc1 2012-07-24 16:24:11 -07:00
amd_iommu.c iommu/amd: Remove obsolete comment 2012-12-02 16:07:43 +01:00
dmar.c iommu/dmar: Use pr_format() instead of PREFIX to tidy up pr_*() calls 2012-06-11 10:27:44 +02:00
exynos-iommu.c iommu/exynos: use list_del_init instead of list_del/INIT_LIST_HEAD 2012-09-18 12:44:02 +02:00
intel_irq_remapping.c irq_remap: disable IRQ remapping if any IOAPIC lacks an IOMMU 2012-08-10 11:28:16 +02:00
intel-iommu.c Drivers: iommu: remove __dev* attributes. 2013-01-03 15:57:14 -08:00
iommu.c Merge branches 'iommu/fixes', 'x86/amd', 'groups', 'arm/tegra' and 'api/domain-attr' into next 2012-07-23 12:17:00 +02:00
iova.c iommu: Fix typo in iommu 2012-07-24 12:58:49 +02:00
irq_remapping.c iommu/irq: Use amd_iommu_irq_ops if supported 2012-09-28 17:43:53 +02:00
irq_remapping.h iommu/amd: Add initialization routines for AMD interrupt remapping 2012-09-28 17:43:52 +02:00
Kconfig iommu/amd: Check if IOAPIC information is correct 2012-09-28 17:31:09 +02:00
Makefile ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c 2012-11-20 10:04:41 -08:00
msm_iommu_dev.c msm: iommu: move to drivers/iommu/ 2011-06-21 10:48:50 +02:00
msm_iommu.c iommu/msm: Implement DOMAIN_ATTR_GEOMETRY attribute 2012-07-11 12:20:05 +02:00
of_iommu.c iommu: Add DMA window parser, of_get_dma_window() 2012-06-25 13:50:28 +02:00
omap-iommu2.c iommu/omap: Adapt to runtime pm 2012-12-03 18:48:23 +01:00
omap-iommu-debug.c ARM: OMAP2+: Move iommu/iovmm headers to platform_data 2012-11-20 10:05:01 -08:00
omap-iommu.c Drivers: iommu: remove __dev* attributes. 2013-01-03 15:57:14 -08:00
omap-iommu.h iommu/omap: Adapt to runtime pm 2012-12-03 18:48:23 +01:00
omap-iopgtable.h ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c 2012-11-20 10:04:41 -08:00
omap-iovmm.c ARM: OMAP2+: Move iommu/iovmm headers to platform_data 2012-11-20 10:05:01 -08:00
tegra-gart.c Drivers: iommu: remove __dev* attributes. 2013-01-03 15:57:14 -08:00
tegra-smmu.c Drivers: iommu: remove __dev* attributes. 2013-01-03 15:57:14 -08:00