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-rw-r--r--system/xen/xsa/xsa224-0002-gnttab-never-create-host-mapping-unless-asked-to.patch42
1 files changed, 0 insertions, 42 deletions
diff --git a/system/xen/xsa/xsa224-0002-gnttab-never-create-host-mapping-unless-asked-to.patch b/system/xen/xsa/xsa224-0002-gnttab-never-create-host-mapping-unless-asked-to.patch
deleted file mode 100644
index bea0214db0e10..0000000000000
--- a/system/xen/xsa/xsa224-0002-gnttab-never-create-host-mapping-unless-asked-to.patch
+++ /dev/null
@@ -1,42 +0,0 @@
-From 2d6357522946bd5a105066db8079e5dd46cb3047 Mon Sep 17 00:00:00 2001
-From: Jan Beulich <jbeulich@suse.com>
-Date: Fri, 2 Jun 2017 15:21:27 +0100
-Subject: [PATCH 2/4] gnttab: never create host mapping unless asked to
-
-We shouldn't create a host mapping unless asked to even in the case of
-mapping a granted MMIO page. In particular the mapping wouldn't be torn
-down when processing the matching unmap request.
-
-This is part of XSA-224.
-
-Reported-by: Jan Beulich <jbeulich@suse.com>
-Signed-off-by: Jan Beulich <jbeulich@suse.com>
----
- xen/common/grant_table.c | 11 +++++++----
- 1 file changed, 7 insertions(+), 4 deletions(-)
-
-diff --git a/xen/common/grant_table.c b/xen/common/grant_table.c
-index 2671761..5baae24 100644
---- a/xen/common/grant_table.c
-+++ b/xen/common/grant_table.c
-@@ -907,10 +907,13 @@ __gnttab_map_grant_ref(
- goto undo_out;
- }
-
-- rc = create_grant_host_mapping(
-- op->host_addr, frame, op->flags, cache_flags);
-- if ( rc != GNTST_okay )
-- goto undo_out;
-+ if ( op->flags & GNTMAP_host_map )
-+ {
-+ rc = create_grant_host_mapping(op->host_addr, frame, op->flags,
-+ cache_flags);
-+ if ( rc != GNTST_okay )
-+ goto undo_out;
-+ }
- }
- else if ( owner == rd || owner == dom_cow )
- {
---
-2.1.4
-