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alistair23-linux/drivers/iommu
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Jay Cornwall 358875fd52 iommu/amd: Apply workaround for ATS write permission check 
The AMD Family 15h Models 30h-3Fh (Kaveri) BIOS and Kernel Developer's
Guide omitted part of the BIOS IOMMU L2 register setup specification.
Without this setup the IOMMU L2 does not fully respect write permissions
when handling an ATS translation request.

The IOMMU L2 will set PTE dirty bit when handling an ATS translation with
write permission request, even when PTE RW bit is clear. This may occur by
direct translation (which would cause a PPR) or by prefetch request from
the ATC.

This is observed in practice when the IOMMU L2 modifies a PTE which maps a
pagecache page. The ext4 filesystem driver BUGs when asked to writeback
these (non-modified) pages.

Enable ATS write permission check in the Kaveri IOMMU L2 if BIOS has not.

Signed-off-by: Jay Cornwall <jay@jcornwall.me>
Cc: <stable@vger.kernel.org> # v3.19+
Signed-off-by: Joerg Roedel <jroedel@suse.de>
 		2016-02-25 16:53:49 +01:00
..
Kconfig iommu/shmobile: Remove unused Renesas IPMMU/IPMMUI driver 2015-12-14 15:55:57 +01:00
Makefile iommu/shmobile: Remove unused Renesas IPMMU/IPMMUI driver 2015-12-14 15:55:57 +01:00
amd_iommu.c iommu/amd: Correct the wrong setting of alias DTE in do_attach 2016-01-29 12:30:47 +01:00
amd_iommu_init.c iommu/amd: Apply workaround for ATS write permission check 2016-02-25 16:53:49 +01:00
amd_iommu_proto.h IOMMU Updates for Linux v4.2 2015-06-23 18:27:19 -07:00
amd_iommu_types.h iommu/amd: Move 'struct dma_ops_domain' definition to amd_iommu.c 2015-12-28 17:18:50 +01:00
amd_iommu_v2.c iommu/amd: Constify mmu_notifier_ops structures 2015-12-14 15:44:29 +01:00
arm-smmu-v3.c iommu/arm-smmu: Use STE.S1STALLD only when supported 2015-12-17 12:05:36 +00:00
arm-smmu.c iommu/arm-smmu: Invalidate TLBs properly 2015-12-17 12:05:35 +00:00
dma-iommu.c iommu/dma: Use correct offset in map_sg 2016-01-07 13:36:41 +01:00
dmar.c SVM fixes for Linux 4.5 2016-02-16 08:04:06 -08:00
exynos-iommu.c iommu/exynos: Add callback for initializing devices from device tree 2015-05-29 10:50:08 +02:00
fsl_pamu.c powerpc/fsl: Move fsl_guts.h out of arch/powerpc 2015-10-21 18:05:50 -05:00
fsl_pamu.h iommu/fsl: Various cleanups 2015-02-03 18:47:18 +01:00
fsl_pamu_domain.c iommu/fsl: Convert to device_group call-back 2015-10-22 00:00:49 +02:00
fsl_pamu_domain.h iommu/fsl: Make use of domain_alloc and domain_free 2015-03-31 15:32:14 +02:00
intel-iommu.c iommu/vt-d: Don't skip PCI devices when disabling IOTLB 2016-01-29 12:18:13 +01:00
intel-svm.c iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts 2016-02-15 12:42:38 +00:00
intel_irq_remapping.c SVM fixes for Linux 4.5 2016-02-16 08:04:06 -08:00
io-pgtable-arm.c iommu/io-pgtable-arm: Fix io-pgtable-arm build failure 2016-01-29 12:14:08 +01:00
io-pgtable.c iommu/io-pgtable-arm: Move init-fn declarations to io-pgtable.h 2015-08-13 19:51:04 +02:00
io-pgtable.h iommu/io-pgtable: Make io_pgtable_ops_to_pgtable() macro common 2015-12-17 12:05:35 +00:00
iommu-sysfs.c iommu: Fix compile error in iommu-sysfs.c 2014-07-07 12:01:21 +02:00
iommu-traces.c iommu: Add iommu_error class event to iommu trace 2013-09-25 11:07:04 +02:00
iommu.c Revert "scatterlist: use sg_phys()" 2015-12-15 12:54:06 -08:00
iova.c iommu: Make the iova library a module 2015-07-28 15:48:01 +01:00
ipmmu-vmsa.c Merge branches 's390', 'arm/renesas', 'arm/msm', 'arm/shmobile', 'arm/smmu', 'x86/amd' and 'x86/vt-d' into next 2016-01-19 15:30:43 +01:00
irq_remapping.c iommu/vt-d: Add a command line parameter for VT-d posted-interrupts 2015-10-01 15:06:54 +02:00
irq_remapping.h iommu, x86: Setup Posted-Interrupts capability for Intel iommu 2015-06-12 11:33:52 +02:00
msm_iommu.c iommu/msm: Use BUG_ON instead of if () BUG() 2015-08-13 19:50:51 +02:00
msm_iommu.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
msm_iommu_dev.c iommu/msm: Use platform_register/unregister_drivers() 2015-12-14 15:51:21 +01:00
msm_iommu_hw-8xxx.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
of_iommu.c of: iommu: Silence misleading warning 2015-08-03 16:07:49 +02:00
omap-iommu-debug.c fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void 2015-09-11 15:21:34 -07:00
omap-iommu.c iommu/omap: Add support for configuring dsp iommus on DRA7xx 2015-10-14 14:35:47 +02:00
omap-iommu.h iommu/omap: Add support for configuring dsp iommus on DRA7xx 2015-10-14 14:35:47 +02:00
omap-iopgtable.h iommu/omap: Use BIT(x) macros in omap-iopgtable.h 2015-08-03 16:04:42 +02:00
rockchip-iommu.c Merge branches 'arm/rockchip', 'arm/exynos', 'arm/smmu', 'x86/vt-d', 'x86/amd', 'default-domains' and 'core' into next 2015-06-19 17:17:47 +02:00
s390-iommu.c iommu/s390: Fix sparse warnings 2015-11-26 14:41:01 +01:00
tegra-gart.c Merge branches 'iommu/fixes', 'x86/vt-d', 'x86/amd', 'arm/smmu', 'arm/tegra' and 'core' into next 2015-04-02 13:33:19 +02:00
tegra-smmu.c iommu/tegra-smmu: Parameterize number of TLB lines 2015-08-13 17:05:28 +02:00