Re: [PATCH v6 4/9] KVM: VMX: dump_vmcs() reports tertiary_exec_control field as well

From: Maxim Levitsky <mlevitsk@redhat.com>
To: Zeng Guang <guang.zeng@intel.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	kvm@vger.kernel.org, Dave Hansen <dave.hansen@linux.intel.com>,
	Tony Luck <tony.luck@intel.com>,
	Kan Liang <kan.liang@linux.intel.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Kim Phillips <kim.phillips@amd.com>,
	Jarkko Sakkinen <jarkko@kernel.org>,
	Jethro Beekman <jethro@fortanix.com>,
	Kai Huang <kai.huang@intel.com>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
	Robert Hu <robert.hu@intel.com>, Gao Chao <chao.gao@intel.com>,
	Robert Hoo <robert.hu@linux.intel.com>
Subject: Re: [PATCH v6 4/9] KVM: VMX: dump_vmcs() reports tertiary_exec_control field as well
Date: Fri, 25 Feb 2022 16:31:22 +0200	[thread overview]
Message-ID: <9fa1258080c4d5b21a9d56448c02cff1438def90.camel@redhat.com> (raw)
In-Reply-To: <20220225082223.18288-5-guang.zeng@intel.com>

On Fri, 2022-02-25 at 16:22 +0800, Zeng Guang wrote:
> From: Robert Hoo <robert.hu@linux.intel.com>
> 
> Add tertiary_exec_control field report in dump_vmcs()
> 
> Signed-off-by: Robert Hoo <robert.hu@linux.intel.com>
> Signed-off-by: Zeng Guang <guang.zeng@intel.com>
> ---
>  arch/x86/kvm/vmx/vmx.c | 17 +++++++++++++----
>  1 file changed, 13 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index 8a5713d49635..7beba7a9f247 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -5891,6 +5891,7 @@ void dump_vmcs(struct kvm_vcpu *vcpu)
>  	struct vcpu_vmx *vmx = to_vmx(vcpu);
>  	u32 vmentry_ctl, vmexit_ctl;
>  	u32 cpu_based_exec_ctrl, pin_based_exec_ctrl, secondary_exec_control;
> +	u64 tertiary_exec_control;
>  	unsigned long cr4;
>  	int efer_slot;
>  
> @@ -5904,9 +5905,16 @@ void dump_vmcs(struct kvm_vcpu *vcpu)
>  	cpu_based_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
>  	pin_based_exec_ctrl = vmcs_read32(PIN_BASED_VM_EXEC_CONTROL);
>  	cr4 = vmcs_readl(GUEST_CR4);
> -	secondary_exec_control = 0;
> +
>  	if (cpu_has_secondary_exec_ctrls())
>  		secondary_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
> +	else
> +		secondary_exec_control = 0;
> +
> +	if (cpu_has_tertiary_exec_ctrls())
> +		tertiary_exec_control = vmcs_read64(TERTIARY_VM_EXEC_CONTROL);
> +	else
> +		tertiary_exec_control = 0;
>  
>  	pr_err("VMCS %p, last attempted VM-entry on CPU %d\n",
>  	       vmx->loaded_vmcs->vmcs, vcpu->arch.last_vmentry_cpu);
> @@ -6006,9 +6014,10 @@ void dump_vmcs(struct kvm_vcpu *vcpu)
>  		vmx_dump_msrs("host autoload", &vmx->msr_autoload.host);
>  
>  	pr_err("*** Control State ***\n");
> -	pr_err("PinBased=%08x CPUBased=%08x SecondaryExec=%08x\n",
> -	       pin_based_exec_ctrl, cpu_based_exec_ctrl, secondary_exec_control);
> -	pr_err("EntryControls=%08x ExitControls=%08x\n", vmentry_ctl, vmexit_ctl);
> +	pr_err("CPUBased=0x%08x SecondaryExec=0x%08x TertiaryExec=0x%016llx\n",
> +	       cpu_based_exec_ctrl, secondary_exec_control, tertiary_exec_control);
> +	pr_err("PinBased=0x%08x EntryControls=%08x ExitControls=%08x\n",
> +	       pin_based_exec_ctrl, vmentry_ctl, vmexit_ctl);
>  	pr_err("ExceptionBitmap=%08x PFECmask=%08x PFECmatch=%08x\n",
>  	       vmcs_read32(EXCEPTION_BITMAP),
>  	       vmcs_read32(PAGE_FAULT_ERROR_CODE_MASK),

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>

Best regards,
	Maxim Levitsky