linux-kernel - [PATCH v2 3/8] KVM: x86: Add an emulation flag for implicit system access

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Message-Id: <20230718131844.5706-4-guang.zeng@intel.com>
Date:   Tue, 18 Jul 2023 21:18:39 +0800
From:   Zeng Guang <guang.zeng@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        H Peter Anvin <hpa@...or.com>, kvm@...r.kernel.org
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Binbin Wu <binbin.wu@...ux.intel.com>,
        Zeng Guang <guang.zeng@...el.com>
Subject: [PATCH v2 3/8] KVM: x86: Add an emulation flag for implicit system access

From: Binbin Wu <binbin.wu@...ux.intel.com>

Add an emulation flag X86EMUL_F_IMPLICIT to identify the behavior of
implicit system access in instruction emulation.

Signed-off-by: Binbin Wu <binbin.wu@...ux.intel.com>
Signed-off-by: Zeng Guang <guang.zeng@...el.com>
---
 arch/x86/kvm/kvm_emulate.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/kvm_emulate.h b/arch/x86/kvm/kvm_emulate.h
index 9fc7d34a4ac1..c0e48f4fa7c4 100644
--- a/arch/x86/kvm/kvm_emulate.h
+++ b/arch/x86/kvm/kvm_emulate.h
@@ -92,6 +92,7 @@ struct x86_instruction_info {
 #define X86EMUL_F_WRITE			BIT(0)
 #define X86EMUL_F_FETCH			BIT(1)
 #define X86EMUL_F_BRANCH		BIT(2)
+#define X86EMUL_F_IMPLICIT		BIT(3)
 
 struct x86_emulate_ops {
 	void (*vm_bugged)(struct x86_emulate_ctxt *ctxt);
-- 
2.27.0