From: Yu Zhang <yu.c.zh...@linux.intel.com>
commit d92935979adba274b1099e67b7f713f6d8413121 upstream.
Previously, 'commit f99e3daf94ff ("KVM: x86: Add Intel PT
virtualization work mode")' work mode' offered framework
to support Intel PT virtualization. However, the patch has
some typos in vmx_vmentry_ctrl() and vmx_vmexit_ctrl(), e.g.
used wrong flags and wrong variable, which will cause the
VM entry failure later.
Fixes: 'commit f99e3daf94ff ("KVM: x86: Add Intel PT virtualization work mode")'
Signed-off-by: Yu Zhang <yu.c.zh...@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
arch/x86/kvm/vmx/vmx.h | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -444,7 +444,8 @@ static inline u32 vmx_vmentry_ctrl(void)
{
u32 vmentry_ctrl = vmcs_config.vmentry_ctrl;
if (pt_mode == PT_MODE_SYSTEM)
- vmentry_ctrl &= ~(VM_EXIT_PT_CONCEAL_PIP |
VM_EXIT_CLEAR_IA32_RTIT_CTL);
+ vmentry_ctrl &= ~(VM_ENTRY_PT_CONCEAL_PIP |
+ VM_ENTRY_LOAD_IA32_RTIT_CTL);
/* Loading of EFER and PERF_GLOBAL_CTRL are toggled dynamically */
return vmentry_ctrl &
~(VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL |
VM_ENTRY_LOAD_IA32_EFER);
@@ -454,9 +455,10 @@ static inline u32 vmx_vmexit_ctrl(void)
{
u32 vmexit_ctrl = vmcs_config.vmexit_ctrl;
if (pt_mode == PT_MODE_SYSTEM)
- vmexit_ctrl &= ~(VM_ENTRY_PT_CONCEAL_PIP |
VM_ENTRY_LOAD_IA32_RTIT_CTL);
+ vmexit_ctrl &= ~(VM_EXIT_PT_CONCEAL_PIP |
+ VM_EXIT_CLEAR_IA32_RTIT_CTL);
/* Loading of EFER and PERF_GLOBAL_CTRL are toggled dynamically */
- return vmcs_config.vmexit_ctrl &
+ return vmexit_ctrl &
~(VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | VM_EXIT_LOAD_IA32_EFER);
}
