Messages in this thread Patch in this message | | | From | Yu Zhang <> | Subject | [PATCH] kvm: vmx: Fix typos in vmentry/vmexit control setting | Date | Thu, 31 Jan 2019 11:26:39 +0800 |
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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.zhang@linux.intel.com> --- Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org --- arch/x86/kvm/vmx/vmx.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 9932895..267de48 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -445,7 +445,8 @@ 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); @@ -455,9 +456,10 @@ 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); } -- 1.9.1
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