| commit | 192a2fb14aef04d86caa255312b1f594f89074b9 | |
| author | Marcelo Tosatti <mtosatti@redhat.com> | |
| Fri, 28 May 2010 12:44:59 +0000 (28 09:44 -0300) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 2 Aug 2010 17:30:06 +0000 (2 10:30 -0700) | ||
| tree | deec92373ec4833b9243c998f13d6ce53a1713b3 | treesnapshot (tar.gz zip) |
| parent | 2ad9aa75c0c14675b763ced721e8fa615ca97f72 | commitdiff |
KVM: MMU: invalidate and flush on spte small->large page size change
Always invalidate spte and flush TLBs when changing page size, to make
sure different sized translations for the same address are never cached
in a CPU's TLB.
Currently the only case where this occurs is when a non-leaf spte pointer is
overwritten by a leaf, large spte entry. This can happen after dirty
logging is disabled on a memslot, for example.
Noticed by Andrea.
KVM-Stable-Tag
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
(cherry picked from commit 3be2264be3c00865116f997dc53ebcc90fe7fc4b)
Always invalidate spte and flush TLBs when changing page size, to make
sure different sized translations for the same address are never cached
in a CPU's TLB.
Currently the only case where this occurs is when a non-leaf spte pointer is
overwritten by a leaf, large spte entry. This can happen after dirty
logging is disabled on a memslot, for example.
Noticed by Andrea.
KVM-Stable-Tag
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
(cherry picked from commit 3be2264be3c00865116f997dc53ebcc90fe7fc4b)
| arch/x86/kvm/mmu.c | diffblobblamehistory |