[Xen-devel] [PATCH 5/3] x86/shadow: emulate_gva_to_mfn() should respect p2m_ioreq_server

["Jan Beulich" <JBeulich@xxxxxxxx>]

Writes to such pages would need to be handed to the emulator, which we're
not prepared to do at this point.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/mm/shadow/hvm.c
+++ b/xen/arch/x86/mm/shadow/hvm.c
@@ -338,7 +338,7 @@ static mfn_t emulate_gva_to_mfn(struct v
     {
         return _mfn(BAD_GFN_TO_MFN);
     }
-    if ( p2m_is_discard_write(p2mt) )
+    if ( p2m_is_discard_write(p2mt) || p2mt == p2m_ioreq_server )
     {
         put_page(page);
         return _mfn(READONLY_GFN);



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel