Messages in this thread Patch in this message | | | From | Tom Murphy <> | Subject | [PATCH v1] iommu/amd: flush not present cache in iommu_map_page | Date | Wed, 24 Apr 2019 17:50:51 +0100 |
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check if there is a not-present cache present and flush it if there is.
Signed-off-by: Tom Murphy <tmurphy@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
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