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| author | Sheng Yang <sheng@linux.intel.com> | 2010-01-05 19:02:29 +0800 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 12:35:46 -0300 |
| commit | 878403b788bff1af9c7f1a61e104f0c77115af29 (patch) | |
| tree | ad25143de372db159aec0734e049050f2b72b128 /arch/x86/kvm/vmx.c | |
| parent | 17cc393596823f4bbab81e68a9e23e7beadbcfca (diff) | |
| download | lwn-878403b788bff1af9c7f1a61e104f0c77115af29.tar.gz lwn-878403b788bff1af9c7f1a61e104f0c77115af29.zip | |
KVM: VMX: Enable EPT 1GB page support
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 11 |
1 files changed, 10 insertions, 1 deletions
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) |