[Xen-changelog] [xen-unstable] vmx: Map the VLAPIC access page as mmio-direct in the p2m. This

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1198756982 0
# Node ID d5f0afb58589e137f100dda9d22ba99dfc29aef5
# Parent  e818c24cec031a4509298708aff3abed94b278cc
vmx: Map the VLAPIC access page as mmio-direct in the p2m. This
prevents emulated accesses to this page, which would not be handled in
the correct way (VMX handles accesses to that page in non-root mode in
a very super-special way).

Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
 xen/arch/x86/hvm/vmx/vmx.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -r e818c24cec03 -r d5f0afb58589 xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c        Thu Dec 27 12:00:30 2007 +0000
+++ b/xen/arch/x86/hvm/vmx/vmx.c        Thu Dec 27 12:03:02 2007 +0000
@@ -2432,8 +2432,8 @@ static int vmx_alloc_vlapic_mapping(stru
     if ( apic_va == NULL )
         return -ENOMEM;
     share_xen_page_with_guest(virt_to_page(apic_va), d, XENSHARE_writable);
-    guest_physmap_add_page(
-        d, paddr_to_pfn(APIC_DEFAULT_PHYS_BASE), virt_to_mfn(apic_va));
+    set_mmio_p2m_entry(
+        d, paddr_to_pfn(APIC_DEFAULT_PHYS_BASE), _mfn(virt_to_mfn(apic_va)));
     d->arch.hvm_domain.vmx_apic_access_mfn = virt_to_mfn(apic_va);
 
     return 0;

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