[PATCH] KVM: MMU: Write protect guest pages when a shadow is created for them
When we cache a guest page table into a shadow page table, we need to prevent
further access to that page by the guest, as that would render the cache
incoherent.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index f7cce44..cd71973 100644
--- a/drivers/kvm/paging_tmpl.h
+++ b/drivers/kvm/paging_tmpl.h
@@ -133,6 +133,7 @@
walker->level - 1, table_gfn);
}
walker->ptep = ptep;
+ pgprintk("%s: pte %llx\n", __FUNCTION__, (u64)*ptep);
}
static void FNAME(release_walker)(struct guest_walker *walker)