| commit | aaf270ed0cb87db6a037a682a3d2f860efb32f59 | |
| author | Avi Kivity <avi@redhat.com> | |
| Fri, 17 Sep 2010 16:13:14 +0000 (17 13:13 -0300) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 27 Sep 2010 00:18:33 +0000 (26 17:18 -0700) | ||
| tree | 124e7ade558b0239c55797db01e0ffa96315f155 | treesnapshot (tar.gz zip) |
| parent | 1be501980f140e5a6698999df9c7c6124c14810f | commitdiff |
KVM: Prevent internal slots from being COWed
commit 7ac77099ce88a0c31b75acd0ec5ef3da4415a6d8 upstream.
If a process with a memory slot is COWed, the page will change its address
(despite having an elevated reference count). This breaks internal memory
slots which have their physical addresses loaded into vmcs registers (see
the APIC access memory slot).
Signed-off-by: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 7ac77099ce88a0c31b75acd0ec5ef3da4415a6d8 upstream.
If a process with a memory slot is COWed, the page will change its address
(despite having an elevated reference count). This breaks internal memory
slots which have their physical addresses loaded into vmcs registers (see
the APIC access memory slot).
Signed-off-by: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| arch/x86/kvm/x86.c | diffblobblamehistory |