WSL2-Linux-Kernel/drivers/iommu
Robin Murphy 8f6429c7cb iommu/iova: Avoid over-allocating when size-aligned
Currently, allocating a size-aligned IOVA region quietly adjusts the
actual allocation size in the process, returning a rounded-up
power-of-two-sized allocation. This results in mismatched behaviour in
the IOMMU driver if the original size was not a power of two, where the
original size is mapped, but the rounded-up IOVA size is unmapped.

Whilst some IOMMUs will happily unmap already-unmapped pages, others
consider this an error, so fix it by computing the necessary alignment
padding without altering the actual allocation size. Also clean up by
making pad_size unsigned, since its callers always pass unsigned values
and negative padding makes little sense here anyway.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2015-07-28 15:47:56 +01:00
..
Kconfig Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-06-26 13:18:51 -07:00
Makefile iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices 2015-05-29 11:12:01 +02:00
amd_iommu.c IOMMU Fixes for Linux v4.2-rc0 2015-07-01 14:44:22 -07:00
amd_iommu_init.c IOMMU Updates for Linux v4.2 2015-06-23 18:27:19 -07:00
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 v4.2 2015-06-23 18:27:19 -07:00
amd_iommu_v2.c iommu/amd: Fix bug in put_pasid_state_wait 2015-05-04 13:20:22 +02:00
arm-smmu-v3.c iommu/arm-smmu: Delete an unnecessary check before the function call "free_io_pgtable_ops" 2015-06-29 21:57:32 +02:00
arm-smmu.c iommu/arm-smmu: Fix broken ATOS check 2015-06-29 21:57:32 +02:00
dmar.c IOMMU Updates for Linux v4.2 2015-06-23 18:27:19 -07:00
exynos-iommu.c iommu/exynos: Add callback for initializing devices from device tree 2015-05-29 10:50:08 +02:00
fsl_pamu.c iommu/fsl: Various cleanups 2015-02-03 18:47:18 +01:00
fsl_pamu.h iommu/fsl: Various cleanups 2015-02-03 18:47:18 +01:00
fsl_pamu_domain.c iommu/fsl: Make use of domain_alloc and domain_free 2015-03-31 15:32:14 +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/iova: Avoid over-allocating when size-aligned 2015-07-28 15:47:56 +01:00
intel_irq_remapping.c IOMMU Updates for Linux v4.2 2015-06-23 18:27:19 -07:00
io-pgtable-arm.c iommu/io-pgtable-arm: avoid speculative walks through TTBR1 2015-03-27 13:39:36 +00:00
io-pgtable.c iommu: add ARM LPAE page table allocator 2015-01-19 14:46:44 +00:00
io-pgtable.h iommu: io-pgtable-arm: add non-secure quirk 2015-01-19 14:46:45 +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 iommu: Ignore -ENODEV errors from add_device call-back 2015-06-29 21:57:19 +02:00
iova.c iommu/iova: Avoid over-allocating when size-aligned 2015-07-28 15:47:56 +01:00
ipmmu-vmsa.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
irq_remapping.c iommu, x86: Provide irq_remapping_cap() interface 2015-06-12 11:33:52 +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: Make use of domain_alloc and domain_free 2015-03-31 15:32:12 +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 dev_get_platdata() 2014-11-04 15:03:39 +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: Add ptr to OF node arg to of_iommu_configure() 2015-03-03 14:42:55 -06:00
omap-iommu-debug.c iommu/omap: Switch pagetable debugfs entry to use seq_file 2014-10-23 14:33:48 +02:00
omap-iommu.c iommu/omap: Make use of domain_alloc and domain_free 2015-03-31 15:32:02 +02:00
omap-iommu.h iommu/omap: Do not export unneeded functions 2014-10-23 14:33:47 +02:00
omap-iopgtable.h iommu/omap: Move to_iommu definition from omap-iopgtable.h 2014-04-16 16:30:15 +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
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 iommu/shmobile: Turn the flush_lock mutex into a spinlock 2014-01-07 15:35:25 +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: Add debugfs support 2015-05-04 12:54:23 +02:00