linux-kernel - [PATCH next V2] KVM: VMX: use __always_inline for is_td_vcpu and is

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Message-ID: <tencent_1A767567C83C1137829622362E4A72756F09@qq.com>
Date: Tue, 27 May 2025 16:44:37 +0800
From: Edward Adam Davis <eadavis@...com>
To: binbin.wu@...ux.intel.com
Cc: bp@...en8.de,
	dave.hansen@...ux.intel.com,
	eadavis@...com,
	hpa@...or.com,
	kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	mingo@...hat.com,
	pbonzini@...hat.com,
	seanjc@...gle.com,
	tglx@...utronix.de,
	x86@...nel.org
Subject: [PATCH next V2] KVM: VMX: use __always_inline for is_td_vcpu and is_td

is_td() and is_td_vcpu() run in no instrumentation, so use __always_inline
to replace inline.

[1]
vmlinux.o: error: objtool: vmx_handle_nmi+0x47:
        call to is_td_vcpu.isra.0() leaves .noinstr.text section

Fixes: 7172c753c26a ("KVM: VMX: Move common fields of struct vcpu_{vmx,tdx} to a struct")
Signed-off-by: Edward Adam Davis <eadavis@...com>
---
V1 -> V2: using __always_inline to replace noinstr

 arch/x86/kvm/vmx/common.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/vmx/common.h b/arch/x86/kvm/vmx/common.h
index 8f46a06e2c44..a0c5e8781c33 100644
--- a/arch/x86/kvm/vmx/common.h
+++ b/arch/x86/kvm/vmx/common.h
@@ -71,8 +71,8 @@ static __always_inline bool is_td_vcpu(struct kvm_vcpu *vcpu)
 
 #else
 
-static inline bool is_td(struct kvm *kvm) { return false; }
-static inline bool is_td_vcpu(struct kvm_vcpu *vcpu) { return false; }
+static __always_inline bool is_td(struct kvm *kvm) { return false; }
+static __always_inline bool is_td_vcpu(struct kvm_vcpu *vcpu) { return false; }
 
 #endif
 
-- 
2.43.0