From 288301c37fb55129e4e9404829cef8bbcd473899 Mon Sep 17 00:00:00 2001 From: "kfraser@localhost.localdomain" Date: Tue, 7 Nov 2006 10:18:50 +0000 Subject: [PATCH] [HVM][VMX] Disable IA32e mode in VM_ENTRY_CONTROLS when guest tries to disable PG from LME mode. Without this patch, the 64 Vista cannot boot. Signed-off-by: Xiaohui Xin Signed-off-by: Xin Li --- xen/arch/x86/hvm/vmx/vmx.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index 8ce1e1d503..ca0bfbde75 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -1512,6 +1512,14 @@ static int vmx_set_cr0(unsigned long value) } else if ( (value & (X86_CR0_PE | X86_CR0_PG)) == X86_CR0_PE ) { + if ( vmx_long_mode_enabled(v) ) + { + v->arch.hvm_vmx.msr_content.msr_items[VMX_INDEX_MSR_EFER] + &= ~EFER_LMA; + __vmread(VM_ENTRY_CONTROLS, &vm_entry_value); + vm_entry_value &= ~VM_ENTRY_IA32E_MODE; + __vmwrite(VM_ENTRY_CONTROLS, vm_entry_value); + } shadow_update_paging_modes(v); __vmwrite(GUEST_CR3, v->arch.hvm_vcpu.hw_cr3); } -- 2.30.2