From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 06/11] KVM: x86: Plumb the src/dst operand types through to .check_intercept()
Date: Fri, 31 Jan 2025 17:55:13 -0800 [thread overview]
Message-ID: <20250201015518.689704-7-seanjc@google.com> (raw)
In-Reply-To: <20250201015518.689704-1-seanjc@google.com>
When checking for intercept when emulating an instruction on behalf of L2,
forward the source and destination operand types to vendor code so that
VMX can synthesize the correct EXIT_QUALIFICATION for port I/O VM-Exits.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/emulate.c | 2 ++
arch/x86/kvm/kvm_emulate.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 0915b5e8aa71..ca613796b5af 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -477,6 +477,8 @@ static int emulator_check_intercept(struct x86_emulate_ctxt *ctxt,
.dst_val = ctxt->dst.val64,
.src_bytes = ctxt->src.bytes,
.dst_bytes = ctxt->dst.bytes,
+ .src_type = ctxt->src.type,
+ .dst_type = ctxt->dst.type,
.ad_bytes = ctxt->ad_bytes,
.next_rip = ctxt->_eip,
};
diff --git a/arch/x86/kvm/kvm_emulate.h b/arch/x86/kvm/kvm_emulate.h
index 73072585e164..49ab8b060137 100644
--- a/arch/x86/kvm/kvm_emulate.h
+++ b/arch/x86/kvm/kvm_emulate.h
@@ -44,6 +44,8 @@ struct x86_instruction_info {
u64 dst_val; /* value of destination operand */
u8 src_bytes; /* size of source operand */
u8 dst_bytes; /* size of destination operand */
+ u8 src_type; /* type of source operand */
+ u8 dst_type; /* type of destination operand */
u8 ad_bytes; /* size of src/dst address */
u64 next_rip; /* rip following the instruction */
};
--
2.48.1.362.g079036d154-goog
next prev parent reply other threads:[~2025-02-01 1:55 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-01 1:55 [PATCH v2 00/11] KVM: x86: Fix emulation of (some) L2 instructions Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 01/11] KVM: nVMX: Check PAUSE_EXITING, not BUS_LOCK_DETECTION, on PAUSE emulation Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 02/11] KVM: nSVM: Pass next RIP, not current RIP, for nested VM-Exit on emulation Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 03/11] KVM: nVMX: Allow emulating RDPID on behalf of L2 Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 04/11] KVM: nVMX: Emulate HLT in L2 if it's not intercepted Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 05/11] KVM: nVMX: Consolidate missing X86EMUL_INTERCEPTED logic in L2 emulation Sean Christopherson
2025-02-01 1:55 ` Sean Christopherson [this message]
2025-02-01 1:55 ` [PATCH v2 07/11] KVM: x86: Plumb the emulator's starting RIP into nested intercept checks Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 08/11] KVM: x86: Add a #define for the architectural max instruction length Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 09/11] KVM: nVMX: Allow the caller to provide instruction length on nested VM-Exit Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 10/11] KVM: nVMX: Synthesize nested VM-Exit for supported emulation intercepts Sean Christopherson
2025-02-01 1:55 ` [PATCH v2 11/11] KVM: selftests: Add a nested (forced) emulation intercept test for x86 Sean Christopherson
2025-02-28 17:06 ` [PATCH v2 00/11] KVM: x86: Fix emulation of (some) L2 instructions Sean Christopherson
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