David Woodhouse 2231e57487 iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts ... commit 46924008273ed03bd11dbb32136e3da4cfe056e1 upstream. According to the VT-d specification we need to clear the PPR bit in the Page Request Status register when handling page requests, or the hardware won't generate any more interrupts. This wasn't actually necessary on SKL/KBL (which may well be the subject of a hardware erratum, although it's harmless enough). But other implementations do appear to get it right, and we only ever get one interrupt unless we clear the PPR bit. Reported-by: CQ Tang <cq.tang@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-02-25 12:01:22 -08:00
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amd_iommu.c	iommu/amd: Correct the wrong setting of alias DTE in do_attach	2016-02-25 12:01:21 -08:00
amd_iommu_init.c	IOMMU Updates for Linux v4.4	2015-11-05 16:12:10 -08:00
amd_iommu_proto.h	IOMMU Updates for Linux v4.2	2015-06-23 18:27:19 -07:00
amd_iommu_types.h	IOMMU Updates for Linux v4.4	2015-11-05 16:12:10 -08:00
amd_iommu_v2.c	iommu/amd: Do proper access checking before calling handle_mm_fault()	2015-12-14 15:37:47 +01:00
arm-smmu-v3.c	Merge branches 'x86/vt-d', 'arm/omap', 'arm/smmu', 's390', 'core' and 'x86/amd' into next	2015-11-02 20:03:34 +09:00
arm-smmu.c	Merge branches 'x86/vt-d', 'arm/omap', 'arm/smmu', 's390', 'core' and 'x86/amd' into next	2015-11-02 20:03:34 +09:00
dma-iommu.c	iommu/dma: Use correct offset in map_sg	2016-01-07 13:36:41 +01:00
dmar.c	iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG	2016-02-25 12:01:22 -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	2016-02-25 12:01:21 -08:00
intel-svm.c	iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts	2016-02-25 12:01:22 -08:00
intel_irq_remapping.c	iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG	2016-02-25 12:01:22 -08:00
io-pgtable-arm.c	iommu/io-pgtable-arm: Ensure we free the final level on teardown	2016-02-17 12:31:02 -08:00
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-arm: Move init-fn declarations to io-pgtable.h	2015-08-13 19:51:04 +02:00
iommu-sysfs.c	iommu: Fix compile error in iommu-sysfs.c	2014-07-07 12:01:21 +02:00
iommu-traces.c
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	iommu/ipmmu-vmsa: Don't truncate ttbr if LPAE is not enabled	2015-12-28 17:10:52 +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
Kconfig	IOMMU Updates for Linux v4.4	2015-11-05 16:12:10 -08:00
Makefile	IOMMU Updates for Linux v4.4	2015-11-05 16:12:10 -08:00
msm_iommu.c	iommu/msm: Use BUG_ON instead of if () BUG()	2015-08-13 19:50:51 +02:00
msm_iommu.h
msm_iommu_dev.c	iommu/msm: Use dev_get_platdata()	2014-11-04 15:03:39 +01:00
msm_iommu_hw-8xxx.h
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	s390/pci_dma: handle dma table failures	2015-11-09 09:10:49 +01:00
shmobile-iommu.c	iommu/shmobile: Make use of domain_alloc and domain_free	2015-03-31 15:32:13 +02:00
shmobile-ipmmu.c	iommu: drop owner assignment from platform_drivers	2014-10-20 16:20:42 +02:00
shmobile-ipmmu.h
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