linux-kernel - [PATCH v7 2/8] KVM: VMX: Extend BUILD_CONTROLS_SHADOW macro to support 64-bit variation

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Date:   Fri,  4 Mar 2022 16:07:19 +0800
From:   Zeng Guang <guang.zeng@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Tony Luck <tony.luck@...el.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Kim Phillips <kim.phillips@....com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Jethro Beekman <jethro@...tanix.com>,
        Kai Huang <kai.huang@...el.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Robert Hu <robert.hu@...el.com>, Gao Chao <chao.gao@...el.com>,
        Zeng Guang <guang.zeng@...el.com>,
        Robert Hoo <robert.hu@...ux.intel.com>
Subject: [PATCH v7 2/8] KVM: VMX: Extend BUILD_CONTROLS_SHADOW macro to support 64-bit variation

From: Robert Hoo <robert.hu@...ux.intel.com>

The Tertiary VM-Exec Control, different from previous control fields, is 64
bit. So extend BUILD_CONTROLS_SHADOW() by adding a 'bit' parameter, to
support both 32 bit and 64 bit fields' auxiliary functions building.

Suggested-by: Sean Christopherson <seanjc@...gle.com>
Reviewed-by: Maxim Levitsky <mlevitsk@...hat.com>
Signed-off-by: Robert Hoo <robert.hu@...ux.intel.com>
Signed-off-by: Zeng Guang <guang.zeng@...el.com>
---
 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 7f2c82e7f38f..e07c76974fb0 100644
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -456,35 +456,38 @@ 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)
 
 /*
  * VMX_REGS_LAZY_LOAD_SET - The set of registers that will be updated in the
-- 
2.27.0