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Lu Baolu authored
The helper intel_context_flush_present() is designed to flush all related caches when a context entry with the present bit set is modified. It currently retrieves the domain ID from the context entry and uses it to flush the IOTLB and context caches. This is incorrect when the context entry transitions from present to non-present, as the domain ID field is cleared before calling the helper. Fix it by passing the domain ID programmed in the context entry before the change to intel_context_flush_present(). This ensures that the correct domain ID is used for cache invalidation. Fixes: f90584f4 ("iommu/vt-d: Add helper to flush caches for context change") Reported-by: Alex Williamson <alex.williamson@redhat.com> Closes: https://lore.kernel.org/linux-iommu/20240814162726.5efe1a6e.alex.williamson@redhat.com/Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Tested-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Reviewed-by: Jacob Pan <jacob.pan@linux.microsoft.com> Link: https://lore.kernel.org/r/20240815124857.70038-1-baolu.lu@linux.intel.comSigned-off-by: Joerg Roedel <jroedel@suse.de>
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