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[2620:137:e000::1:20]) by mx.google.com with ESMTP id bq24-20020a056a000e1800b0068188beefedsi3376600pfb.88.2023.07.07.01.52.35; Fri, 07 Jul 2023 01:52:49 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231802AbjGGIoN (ORCPT + 99 others); Fri, 7 Jul 2023 04:44:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229642AbjGGIoM (ORCPT ); Fri, 7 Jul 2023 04:44:12 -0400 Received: from mail.nfschina.com (unknown [42.101.60.195]) by lindbergh.monkeyblade.net (Postfix) with SMTP id 479E31FD8; Fri, 7 Jul 2023 01:44:11 -0700 (PDT) Received: from localhost.localdomain (unknown [180.167.10.98]) by mail.nfschina.com (Maildata Gateway V2.8.8) with ESMTPA id 71567603362EB; Fri, 7 Jul 2023 16:43:50 +0800 (CST) X-MD-Sfrom: suhui@nfschina.com X-MD-SrcIP: 180.167.10.98 From: Su Hui To: seanjc@google.com, pbonzini@redhat.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, x86@kernel.org Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Su Hui Subject: [PATCH] KVM: VMX: Avoid noinstr warning Date: Fri, 7 Jul 2023 16:43:28 +0800 Message-Id: <20230707084328.2563454-1-suhui@nfschina.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,RDNS_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1770751231008539686?= X-GMAIL-MSGID: =?utf-8?q?1770751231008539686?= vmlinux.o: warning: objtool: vmx_vcpu_enter_exit+0x2d8: call to vmread_error_trampoline() leaves .noinstr.text section Signed-off-by: Su Hui Reported-by: Su Hui Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/vmx_ops.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kvm/vmx/vmx_ops.h b/arch/x86/kvm/vmx/vmx_ops.h index ce47dc265f89..54f86ce2ad60 100644 --- a/arch/x86/kvm/vmx/vmx_ops.h +++ b/arch/x86/kvm/vmx/vmx_ops.h @@ -112,6 +112,7 @@ static __always_inline unsigned long __vmcs_readl(unsigned long field) #else /* !CONFIG_CC_HAS_ASM_GOTO_OUTPUT */ + instrumentation_begin(); asm volatile("1: vmread %2, %1\n\t" ".byte 0x3e\n\t" /* branch taken hint */ "ja 3f\n\t" @@ -139,6 +140,7 @@ static __always_inline unsigned long __vmcs_readl(unsigned long field) _ASM_EXTABLE_TYPE_REG(1b, 2b, EX_TYPE_ONE_REG, %1) : ASM_CALL_CONSTRAINT, "=&r"(value) : "r"(field) : "cc"); + instrumentation_end(); return value; #endif /* CONFIG_CC_HAS_ASM_GOTO_OUTPUT */