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Peter Anvin" Subject: [PATCH 2/2] KVM: VMX: Use ASM_INPUT_RM in __vmcs_writel Date: Wed, 11 Feb 2026 11:28:50 +0100 Message-ID: <20260211102928.100944-2-ubizjak@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260211102928.100944-1-ubizjak@gmail.com> References: <20260211102928.100944-1-ubizjak@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use the ASM_INPUT_RM macro for VMCS write operation in vmx_ops.h to work around clang problems with "rm" asm constraint. clang seems to always chose the memory input, while it is almost always the worst choice. Signed-off-by: Uros Bizjak Cc: Sean Christopherson Cc: Paolo Bonzini Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" --- arch/x86/kvm/vmx/vmx_ops.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/vmx_ops.h b/arch/x86/kvm/vmx/vmx_ops.h index 1000d37f5b0c..81784befaaf4 100644 --- a/arch/x86/kvm/vmx/vmx_ops.h +++ b/arch/x86/kvm/vmx/vmx_ops.h @@ -221,7 +221,7 @@ fault: \ static __always_inline void __vmcs_writel(unsigned long field, unsigned long value) { - vmx_asm2(vmwrite, "r"(field), "rm"(value), field, value); + vmx_asm2(vmwrite, "r" (field), ASM_INPUT_RM (value), field, value); } static __always_inline void vmcs_write16(unsigned long field, u16 value) -- 2.53.0