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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-06-11 12:07:44 -0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:32:56 +0300 |
| commit | 54dee9933e8d93589ad63ec3d6be39f1921b0767 (patch) | |
| tree | 77aa79604ddfb6f842e582e7b8ce7cdbc54b2060 /arch/x86/kvm/vmx.c | |
| parent | 68f89400bc92421d6da22e1ec8e3ec599c3c8244 (diff) | |
| download | op-kernel-dev-54dee9933e8d93589ad63ec3d6be39f1921b0767.zip op-kernel-dev-54dee9933e8d93589ad63ec3d6be39f1921b0767.tar.gz | |
KVM: VMX: conditionally disable 2M pages
Disable usage of 2M pages if VMX_EPT_2MB_PAGE_BIT (bit 16) is clear
in MSR_IA32_VMX_EPT_VPID_CAP and EPT is enabled.
[avi: s/largepages_disabled/largepages_enabled/ to avoid negative logic]
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 94c07ad..fc8d49c 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1381,6 +1381,9 @@ static __init int hardware_setup(void) if (!cpu_has_vmx_tpr_shadow()) kvm_x86_ops->update_cr8_intercept = NULL; + if (enable_ept && !cpu_has_vmx_ept_2m_page()) + kvm_disable_largepages(); + return alloc_kvm_area(); } |
