Re: [PATCH v6 14/14] iommu/arm-smmu-v3: Set MEV bit in nested STE for DoS mitigations

On Fri, Jan 24, 2025 at 04:30:43PM -0800, Nicolin Chen wrote:

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c index ceeed907a714..20a0e39d7caa 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c @@ -43,6 +43,8 @@ static void arm_smmu_make_nested_cd_table_ste( target->data[0] |= nested_domain->ste[0] & ~cpu_to_le64(STRTAB_STE_0_CFG); target->data[1] |= nested_domain->ste[1];

• /* Merge events for DoS mitigations on eventq */
• target->data[1] |= STRTAB_STE_1_MEV;

This should have cpu_to_le64(). Fixed accordingly.

Thanks Nicolin