diff options
Diffstat (limited to 'system/xen/xsa/xsa328-post-xsa321-4.13-1.patch')
| -rw-r--r-- | system/xen/xsa/xsa328-post-xsa321-4.13-1.patch | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/system/xen/xsa/xsa328-post-xsa321-4.13-1.patch b/system/xen/xsa/xsa328-post-xsa321-4.13-1.patch deleted file mode 100644 index 9a08ab240e..0000000000 --- a/system/xen/xsa/xsa328-post-xsa321-4.13-1.patch +++ /dev/null @@ -1,31 +0,0 @@ -From: Jan Beulich <jbeulich@suse.com> -Subject: vtd: improve IOMMU TLB flush - -Do not limit PSI flushes to order 0 pages, in order to avoid doing a -full TLB flush if the passed in page has an order greater than 0 and -is aligned. Should increase the performance of IOMMU TLB flushes when -dealing with page orders greater than 0. - -This is part of XSA-321. - -Signed-off-by: Jan Beulich <jbeulich@suse.com> - ---- a/xen/drivers/passthrough/vtd/iommu.c -+++ b/xen/drivers/passthrough/vtd/iommu.c -@@ -570,13 +570,14 @@ static int __must_check iommu_flush_iotl - if ( iommu_domid == -1 ) - continue; - -- if ( page_count != 1 || dfn_eq(dfn, INVALID_DFN) ) -+ if ( !page_count || (page_count & (page_count - 1)) || -+ dfn_eq(dfn, INVALID_DFN) || !IS_ALIGNED(dfn_x(dfn), page_count) ) - rc = iommu_flush_iotlb_dsi(iommu, iommu_domid, - 0, flush_dev_iotlb); - else - rc = iommu_flush_iotlb_psi(iommu, iommu_domid, - dfn_to_daddr(dfn), -- PAGE_ORDER_4K, -+ get_order_from_pages(page_count), - !dma_old_pte_present, - flush_dev_iotlb); - |