iommu/amd: Rate limit INVALID_PPR_REQUEST error logging

The amd_iommu_report_ppr_err() function logs an error message for every
INVALID_PPR_REQUEST event. Under certain fault conditions, a misbehaving
or malicious device can flood the IOMMU event log with PPR faults, causing
the kernel log to be overwhelmed with repeated error messages.

Switch from dev_err() to dev_err_ratelimited() to suppress duplicate
messages when INVALID_PPR_REQUEST events occur at a high rate.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Ankit Soni <Ankit.Soni@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

0 files changed, 0 insertions, 0 deletions