On 1/17/2020 5:08 PM, Joerg Roedel wrote:
Adding Suravee, who wrote the IOMMU Perf Counter code.
On Tue, Jan 14, 2020 at 08:12:20AM -0700, Shuah Khan wrote:
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<sk...@linuxfoundation.org>
---
drivers/iommu/amd_iommu_init.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
Suravee, can you please review this patch?
This looks ok. Does this fix certain issues? Or is this just for sanity.
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
Thanks,
Suravee
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