[PATCH v2 0/2] iommu/amd: Don't use atomic64_t for domain->pt_root

Joerg Roedel
2020-06-26T08:08:40Z

Hi,

a previous discussion pointed out that using atomic64_t for that
purpose is a bit of overkill. This patch-set replaces it with unsigned
long and introduces some helpers first to make the change more easy.

Qian, can you please test these patches in your environment? You can
trigger any race-condition there pretty reliably :)

Other than that, please review and test.

Regards,

Joerg

Changed to v1:

- Addressed review comments from Qian.

Joerg Roedel (2):
iommu/amd: Add helper functions to update domain->pt_root
iommu/amd: Use 'unsigned long' for domain->pt_root

drivers/iommu/amd/amd_iommu_types.h | 2 +-
drivers/iommu/amd/iommu.c | 44 +++++++++++++++++++++--------
2 files changed, 33 insertions(+), 13 deletions(-)

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2.27.0