On 1/23/20 11:43 PM, Suravee Suthikulpanit wrote:
On 1/24/20 5:32 AM, 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
---
On Thu, Jan 23, 2020 at 03:32:14PM -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
> ---
> Changes since v1:
On 1/24/20 5:32 AM, 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
---
Changes since v1:
-- Fix bug in sucessful return
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
---
Changes since v1:
-- Fix bug in sucessful return path. Add a return instead of
fall