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| author | Shuah Khan <[email protected]> | 2020-01-23 22:32:14 +0000 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2020-01-24 14:28:40 +0000 |
| commit | 8c17bbf6c8f70058a66305f2e1982552e6ea7f47 (patch) | |
| tree | 8d9f6685bd20bd711f9f61cb6d892cac47bdd38e /fs/btrfs/dev-replace.c | |
| parent | iommu/vt-d: Call __dmar_remove_one_dev_info with valid pointer (diff) | |
| download | kernel-8c17bbf6c8f70058a66305f2e1982552e6ea7f47.tar.gz kernel-8c17bbf6c8f70058a66305f2e1982552e6ea7f47.zip | |
iommu/amd: Fix IOMMU perf counter clobbering during init
init_iommu_perf_ctr() clobbers the register when it checks write access
to IOMMU perf counters and fails to restore when they are writable.
Add save and restore to fix it.
Signed-off-by: Shuah Khan <[email protected]>
Fixes: 30861ddc9cca4 ("perf/x86/amd: Add IOMMU Performance Counter resource management")
Reviewed-by: Suravee Suthikulpanit <[email protected]>
Tested-by: Suravee Suthikulpanit <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
0 files changed, 0 insertions, 0 deletions