From 878403b788bff1af9c7f1a61e104f0c77115af29 Mon Sep 17 00:00:00 2001 From: Sheng Yang Date: Tue, 5 Jan 2010 19:02:29 +0800 Subject: KVM: VMX: Enable EPT 1GB page support Signed-off-by: Sheng Yang Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/vmx.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'arch/x86/kvm/vmx.c') diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 0fd0892553ec..9b197b25b66d 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -318,6 +318,11 @@ static inline bool cpu_has_vmx_ept_2m_page(void) return !!(vmx_capability.ept & VMX_EPT_2MB_PAGE_BIT); } +static inline bool cpu_has_vmx_ept_1g_page(void) +{ + return !!(vmx_capability.ept & VMX_EPT_1GB_PAGE_BIT); +} + static inline int cpu_has_vmx_invept_individual_addr(void) { return !!(vmx_capability.ept & VMX_EPT_EXTENT_INDIVIDUAL_BIT); @@ -4038,7 +4043,11 @@ static const struct trace_print_flags vmx_exit_reasons_str[] = { static int vmx_get_lpage_level(void) { - return PT_DIRECTORY_LEVEL; + if (enable_ept && !cpu_has_vmx_ept_1g_page()) + return PT_DIRECTORY_LEVEL; + else + /* For shadow and EPT supported 1GB page */ + return PT_PDPE_LEVEL; } static inline u32 bit(int bitno) -- cgit v1.2.3