diff options
Diffstat (limited to '0079-common-map_vcpu_info-wants-to-unshare-the-underlying.patch')
-rw-r--r-- | 0079-common-map_vcpu_info-wants-to-unshare-the-underlying.patch | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/0079-common-map_vcpu_info-wants-to-unshare-the-underlying.patch b/0079-common-map_vcpu_info-wants-to-unshare-the-underlying.patch deleted file mode 100644 index 2944a80..0000000 --- a/0079-common-map_vcpu_info-wants-to-unshare-the-underlying.patch +++ /dev/null @@ -1,41 +0,0 @@ -From 317894fa6a067a7903199bc5c1e3e06a0436caf8 Mon Sep 17 00:00:00 2001 -From: Jan Beulich <jbeulich@suse.com> -Date: Mon, 31 Oct 2022 13:36:50 +0100 -Subject: [PATCH 079/126] common: map_vcpu_info() wants to unshare the - underlying page -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Not passing P2M_UNSHARE to get_page_from_gfn() means there won't even be -an attempt to unshare the referenced page, without any indication to the -caller (e.g. -EAGAIN). Note that guests have no direct control over -which of their pages are shared (or paged out), and hence they have no -way to make sure all on their own that the subsequent obtaining of a -writable type reference can actually succeed. - -Signed-off-by: Jan Beulich <jbeulich@suse.com> -Reviewed-by: Roger Pau Monné <roger.pau@citrix.com> -Acked-by: Julien Grall <jgrall@amazon.com> -master commit: 48980cf24d5cf41fd644600f99c753419505e735 -master date: 2022-10-28 11:38:32 +0200 ---- - xen/common/domain.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - -diff --git a/xen/common/domain.c b/xen/common/domain.c -index 17cc32fde373..0fb7f9a6225c 100644 ---- a/xen/common/domain.c -+++ b/xen/common/domain.c -@@ -1454,7 +1454,7 @@ int map_vcpu_info(struct vcpu *v, unsigned long gfn, unsigned offset) - if ( (v != current) && !(v->pause_flags & VPF_down) ) - return -EINVAL; - -- page = get_page_from_gfn(d, gfn, NULL, P2M_ALLOC); -+ page = get_page_from_gfn(d, gfn, NULL, P2M_UNSHARE); - if ( !page ) - return -EINVAL; - --- -2.37.4 - |