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From: Zeng Guang <guang.zeng@intel.com>
To: Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.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" <kvm@vger.kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"Luck, Tony" <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>,
	"Huang, Kai" <kai.huang@intel.com>,
	"x86@kernel.org" <x86@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Hu, Robert" <robert.hu@intel.com>,
	"Gao, Chao" <chao.gao@intel.com>,
	Robert Hoo <robert.hu@linux.intel.com>
Subject: Re: [PATCH v4 2/6] KVM: VMX: Extend BUILD_CONTROLS_SHADOW macro to support 64-bit variation
Date: Sat, 18 Sep 2021 00:13:54 +0800	[thread overview]
Message-ID: <9f8585cd-9c99-b8bd-8400-0fa922b0d361@intel.com> (raw)
In-Reply-To: <YTvOE3p7WRGYUg9h@google.com>

On 9/11/2021 5:28 AM, Sean Christopherson wrote:
> On Mon, Aug 09, 2021, Zeng Guang wrote:
>> +static inline u##bits lname##_controls_get(struct vcpu_vmx *vmx)	\
>> +{									\
>> +	return vmx->loaded_vmcs->controls_shadow.lname;			\
>> +}									\
> This conflicts with commit 389ab25216c9 ("KVM: nVMX: Pull KVM L0's desired controls
> directly from vmcs01"), I believe the correct resolution is:
>
> ---
>   arch/x86/kvm/vmx/vmx.h | 59 ++++++++++++++++++++++--------------------
>   1 file changed, 31 insertions(+), 28 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
> index 4858c5fd95f2..1ae43afe52a7 100644
> --- a/arch/x86/kvm/vmx/vmx.h
> +++ b/arch/x86/kvm/vmx/vmx.h
> @@ -408,35 +408,38 @@ static inline u8 vmx_get_rvi(void)
>   	return vmcs_read16(GUEST_INTR_STATUS) & 0xff;
>   }
>
> -#define BUILD_CONTROLS_SHADOW(lname, uname)				    \
> -static inline void lname##_controls_set(struct vcpu_vmx *vmx, u32 val)	    \
> -{									    \
> -	if (vmx->loaded_vmcs->controls_shadow.lname != val) {		    \
> -		vmcs_write32(uname, val);				    \
> -		vmx->loaded_vmcs->controls_shadow.lname = val;		    \
> -	}								    \
> -}									    \
> -static inline u32 __##lname##_controls_get(struct loaded_vmcs *vmcs)	    \
> -{									    \
> -	return vmcs->controls_shadow.lname;				    \
> -}									    \
> -static inline u32 lname##_controls_get(struct vcpu_vmx *vmx)		    \
> -{									    \
> -	return __##lname##_controls_get(vmx->loaded_vmcs);		    \
> -}									    \
> -static inline void lname##_controls_setbit(struct vcpu_vmx *vmx, u32 val)   \
> -{									    \
> -	lname##_controls_set(vmx, lname##_controls_get(vmx) | val);	    \
> -}									    \
> -static inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u32 val) \
> -{									    \
> -	lname##_controls_set(vmx, lname##_controls_get(vmx) & ~val);	    \
> +#define BUILD_CONTROLS_SHADOW(lname, uname, bits)			\
> +static inline								\
> +void lname##_controls_set(struct vcpu_vmx *vmx, u##bits val)		\
> +{									\
> +	if (vmx->loaded_vmcs->controls_shadow.lname != val) {		\
> +		vmcs_write##bits(uname, val);				\
> +		vmx->loaded_vmcs->controls_shadow.lname = val;		\
> +	}								\
> +}									\
> +static inline u##bits __##lname##_controls_get(struct loaded_vmcs *vmcs)\
> +{									\
> +	return vmcs->controls_shadow.lname;				\
> +}									\
> +static inline u##bits lname##_controls_get(struct vcpu_vmx *vmx)	\
> +{									\
> +	return __##lname##_controls_get(vmx->loaded_vmcs);		\
> +}									\
> +static inline								\
> +void lname##_controls_setbit(struct vcpu_vmx *vmx, u##bits val)		\
> +{									\
> +	lname##_controls_set(vmx, lname##_controls_get(vmx) | val);	\
> +}									\
> +static inline								\
> +void lname##_controls_clearbit(struct vcpu_vmx *vmx, u##bits val)	\
> +{									\
> +	lname##_controls_set(vmx, lname##_controls_get(vmx) & ~val);	\
>   }
> -BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS)
> -BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS)
> -BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL)
> -BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL)
> -BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL)
> +BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32)
> +BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS, 32)
> +BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL, 32)
> +BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL, 32)
> +BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL, 32)
>
>   static inline void vmx_register_cache_reset(struct kvm_vcpu *vcpu)
>   {
> --

I will rebase it. Thanks.



  reply	other threads:[~2021-09-17 16:14 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-09  3:29 [PATCH v4 0/6] IPI virtualization support for VM Zeng Guang
2021-08-09  3:29 ` [PATCH v4 1/6] x86/feat_ctl: Add new VMX feature, Tertiary VM-Execution control Zeng Guang
2021-09-10 21:25   ` Sean Christopherson
2021-09-17 16:10     ` Zeng Guang
2021-08-09  3:29 ` [PATCH v4 2/6] KVM: VMX: Extend BUILD_CONTROLS_SHADOW macro to support 64-bit variation Zeng Guang
2021-09-10 21:28   ` Sean Christopherson
2021-09-17 16:13     ` Zeng Guang [this message]
2021-08-09  3:29 ` [PATCH v4 3/6] KVM: VMX: Detect Tertiary VM-Execution control when setup VMCS config Zeng Guang
2021-09-10 21:35   ` Sean Christopherson
2021-09-17 16:15     ` Zeng Guang
2021-08-09  3:29 ` [PATCH v4 4/6] KVM: VMX: dump_vmcs() reports tertiary_exec_control field as well Zeng Guang
2021-08-09  3:29 ` [PATCH v4 5/6] KVM: x86: Support interrupt dispatch in x2APIC mode with APIC-write VM exit Zeng Guang
2021-09-10 22:28   ` Sean Christopherson
2021-09-17 16:00     ` Zeng Guang
2021-08-09  3:29 ` [PATCH v4 6/6] KVM: VMX: enable IPI virtualization Zeng Guang
2021-09-10 23:43   ` Sean Christopherson
2021-09-10 23:55     ` Sean Christopherson
2021-09-17 16:10       ` Zeng Guang
2021-10-14 18:56         ` Sean Christopherson
2021-09-17 16:00     ` Zeng Guang
2021-08-20 13:19 ` [PATCH v4 0/6] IPI virtualization support for VM Zeng Guang

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