check if there is a not-present cache present and flush it if there is. Signed-off-by: Tom Murphy <tmur...@arista.com> --- drivers/iommu/amd_iommu.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index f7cdd2ab7f11..91fe5cb10f50 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1637,6 +1637,11 @@ static int iommu_map_page(struct protection_domain *dom, update_domain(dom); + if (unlikely(amd_iommu_np_cache && !dom->updated)) { + domain_flush_pages(dom, bus_addr, page_size); + domain_flush_complete(dom); + } + /* Everything flushed out, free pages now */ free_page_list(freelist); -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu