From 574353496081bce251fdd82fbfb67ca9fd6e0fcf Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 6 Aug 2013 10:39:56 +0200 Subject: [PATCH] KVM: nVMX: Fix up VM_ENTRY_IA32E_MODE control feature reporting Do not report that we can enter the guest in 64-bit mode if the host is 32-bit only. This is not supported by KVM. Signed-off-by: Jan Kiszka Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index c041023f5d8b..d9d0a94eb509 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2212,9 +2212,13 @@ static __init void nested_vmx_setup_ctls_msrs(void) /* If bit 55 of VMX_BASIC is off, bits 0-8 and 12 must be 1. */ nested_vmx_entry_ctls_low = VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR; nested_vmx_entry_ctls_high &= - VM_ENTRY_LOAD_IA32_PAT | VM_ENTRY_IA32E_MODE; +#ifdef CONFIG_X86_64 + VM_ENTRY_IA32E_MODE | +#endif + VM_ENTRY_LOAD_IA32_PAT; nested_vmx_entry_ctls_high |= (VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR | VM_ENTRY_LOAD_IA32_EFER); + /* cpu-based controls */ rdmsr(MSR_IA32_VMX_PROCBASED_CTLS, nested_vmx_procbased_ctls_low, nested_vmx_procbased_ctls_high); -- 2.20.1