1 files changed, 0 insertions, 50 deletions
diff --git a/system/xen/xsa/xsa346-4.13-1.patch b/system/xen/xsa/xsa346-4.13-1.patch
deleted file mode 100644
index a32e658e8085d..0000000000000
--- a/system/xen/xsa/xsa346-4.13-1.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-From: Jan Beulich <jbeulich@suse.com>
-Subject: IOMMU: suppress "iommu_dont_flush_iotlb" when about to free a page
-
-Deferring flushes to a single, wide range one - as is done when
-handling XENMAPSPACE_gmfn_range - is okay only as long as
-pages don't get freed ahead of the eventual flush. While the only
-function setting the flag (xenmem_add_to_physmap()) suggests by its name
-that it's only mapping new entries, in reality the way
-xenmem_add_to_physmap_one() works means an unmap would happen not only
-for the page being moved (but not freed) but, if the destination GFN is
-populated, also for the page being displaced from that GFN. Collapsing
-the two flushes for this GFN into just one (end even more so deferring
-it to a batched invocation) is not correct.
-
-This is part of XSA-346.
-
-Fixes: cf95b2a9fd5a ("iommu: Introduce per cpu flag (iommu_dont_flush_iotlb) to avoid unnecessary iotlb... ")
-Signed-off-by: Jan Beulich <jbeulich@suse.com>
-Reviewed-by: Paul Durrant <paul@xen.org>
-Acked-by: Julien Grall <jgrall@amazon.com>
-
---- a/xen/common/memory.c
-+++ b/xen/common/memory.c
-@@ -292,6 +292,7 @@ int guest_remove_page(struct domain *d,
-     p2m_type_t p2mt;
- #endif
-     mfn_t mfn;
-+    bool *dont_flush_p, dont_flush;
-     int rc;
- 
- #ifdef CONFIG_X86
-@@ -378,8 +379,18 @@ int guest_remove_page(struct domain *d,
-         return -ENXIO;
-     }
- 
-+    /*
-+     * Since we're likely to free the page below, we need to suspend
-+     * xenmem_add_to_physmap()'s suppressing of IOMMU TLB flushes.
-+     */
-+    dont_flush_p = &this_cpu(iommu_dont_flush_iotlb);
-+    dont_flush = *dont_flush_p;
-+    *dont_flush_p = false;
-+
-     rc = guest_physmap_remove_page(d, _gfn(gmfn), mfn, 0);
- 
-+    *dont_flush_p = dont_flush;
-+
-     /*
-      * With the lack of an IOMMU on some platforms, domains with DMA-capable
-      * device must retrieve the same pfn when the hypercall populate_physmap