[PATCH 3/3] Update VMX_EPT_IDENTITY_PAGETABLE_ADDR to synchronize with kernel code.

Jordan Justen
2009-07-16T18:02:23Z

Although VMX_EPT_IDENTITY_PAGETABLE_ADDR does not appear to be used within
qemu-kvm, this change mirrors a similar change in the kernel kvm code.

The purpose is to move the KVM 'EPT Identity Pages' from:
0xfffbc000-0xfffbcfff
to:
0xfeffc000-0xfeffcfff

The step is required to free up the 0xff000000-0xffffffff (16MB) range
for use with bios.bin.

The KVM kernel change depends upon a change to kvm/bios/rombios.c so the bios
INT15-E820 function will properly reserve the new location.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
---
kvm/include/x86/asm/vmx.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kvm/include/x86/asm/vmx.h b/kvm/include/x86/asm/vmx.h
index df8d4f9..99e2bb9 100644
--- a/kvm/include/x86/asm/vmx.h
+++ b/kvm/include/x86/asm/vmx.h
@@ -403,7 +403,7 @@ enum vmcs_field {
#define VMX_EPT_EXECUTABLE_MASK 0x4ull
#define VMX_EPT_IGMT_BIT (1ull << 6)

-#define VMX_EPT_IDENTITY_PAGETABLE_ADDR 0xfffbc000ul
+#define VMX_EPT_IDENTITY_PAGETABLE_ADDR 0xfeffc000ul

#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
--
1.6.0.4