Mailing List Archive

# HG changeset patch
# User cl349@firebug.cl.cam.ac.uk
# Node ID 4ca6f052cdf6f1c18209042e4c9960ca41e75d4b
# Parent e299470e879358118667dbb95c6735af22c3a31d
Fix Read/Write CR3 emulation.
- on write, new_guest_cr3() takes an mfn not an ma
- for shadow_translate guests, apply mfn_to_gmfn/gmfn_to_mfn

Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

diff -r e299470e8793 -r 4ca6f052cdf6 xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c Fri Feb 17 11:28:35 2006
+++ b/xen/arch/x86/traps.c Fri Feb 17 11:49:11 2006
@@ -901,7 +901,8 @@
break;

case 3: /* Read CR3 */
- *reg = pagetable_get_paddr(v->arch.guest_table);
+ *reg = pfn_to_paddr(mfn_to_gmfn(v->domain,
+ pagetable_get_pfn(v->arch.guest_table)));
break;

case 4: /* Read CR4 */
@@ -950,7 +951,7 @@

case 3: /* Write CR3 */
LOCK_BIGLOCK(v->domain);
- (void)new_guest_cr3(*reg);
+ (void)new_guest_cr3(gmfn_to_mfn(v->domain, paddr_to_pfn(*reg)));
UNLOCK_BIGLOCK(v->domain);
break;


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