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([172.25.112.68]) by orsmga003.jf.intel.com with ESMTP; 27 Jan 2024 02:08:51 -0800 From: Xin Li To: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, ravi.v.shankar@intel.com, andrew.cooper3@citrix.com Subject: [PATCH 1/2] x86/fred: Fix build with clang Date: Sat, 27 Jan 2024 01:37:27 -0800 Message-ID: <20240127093728.1323-2-xin3.li@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240127093728.1323-1-xin3.li@intel.com> References: <20240127093728.1323-1-xin3.li@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789237837165267970 X-GMAIL-MSGID: 1789237837165267970 As clang doesn't allow .fill to refernece a symbol before it's defined, use asm_fred_entrypoint_user instead of asm_fred_entrypoint_kernel. Fixes: 5e0636a41485 ("x86/fred: FRED entry/exit and dispatch code") Reported-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/lkml/20240126100050.GAZbOC0g3Rlr6otZcT@fat_crate.local/ Signed-off-by: Xin Li --- arch/x86/entry/entry_64_fred.S | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/entry/entry_64_fred.S b/arch/x86/entry/entry_64_fred.S index eedf98de7538..5427e0da190d 100644 --- a/arch/x86/entry/entry_64_fred.S +++ b/arch/x86/entry/entry_64_fred.S @@ -43,13 +43,12 @@ SYM_INNER_LABEL(asm_fred_exit_user, SYM_L_GLOBAL) _ASM_EXTABLE_TYPE(1b, asm_fred_entrypoint_user, EX_TYPE_ERETU) SYM_CODE_END(asm_fred_entrypoint_user) -.fill asm_fred_entrypoint_kernel - ., 1, 0xcc - /* * The new RIP value that FRED event delivery establishes is * (IA32_FRED_CONFIG & ~FFFH) + 256 for events that occur in * ring 0, i.e., asm_fred_entrypoint_user + 256. */ + .fill asm_fred_entrypoint_user + 256 - ., 1, 0xcc .org asm_fred_entrypoint_user + 256 SYM_CODE_START_NOALIGN(asm_fred_entrypoint_kernel) FRED_ENTER From patchwork Sat Jan 27 09:37:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 192996 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:2395:b0:106:343:edcb with SMTP id gw21csp409036dyb; Sat, 27 Jan 2024 02:09:35 -0800 (PST) X-Google-Smtp-Source: AGHT+IFvPk8HTWldybRLMXyhub1gpbGLHLmnIeGAKaGBd1PVqxCtOA6I3dS5rgDJqc7mowc75Eny X-Received: by 2002:a81:af4c:0:b0:5f7:2c10:e166 with SMTP id x12-20020a81af4c000000b005f72c10e166mr1355243ywj.94.1706350174892; Sat, 27 Jan 2024 02:09:34 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1706350174; cv=pass; d=google.com; s=arc-20160816; b=Nei1HqD17suGhkBa/p/Sv1ZZGyUNVrbnaPMkS32N7o6Y2QqwynKbc5tW+kcN3XuSF8 kafP7d2OWW8a90fiRS2RVeXc757ZaTY8JZFu4NPAh3fKEUVi6ov8T4JJMPtEERkGKNfD VVLxO5bn6PEFrgqyFvYenJlyMqMOqDm1Z9lIfqfPseULfM+z0OZ73oBo7k4G9AToqcoM Q/UGtZzFy0ZeiCPUkwKgEewaBkV+oCgZpD774AjoA0mAc7g5MLmxeV2NH9knDvHMTjlu X7Q5pfJKUwlT7UrVh4jMDIECTFlmZMDGZeZSmT0qOIAoXEKdmAKNdIdRsU6lwf2/9rPR opNg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=Wt+7P4pphgVv77idLjoNzsqDTpU8fMNKnFwke/8hwL8=; fh=eoqNldmLmBswfN1zMWVVrnsIvNovukkqS6g9u7sxTHc=; b=qBuBMygUrljT0K8AGVDfm2nDUm3cuyJ2HMopLpyYs7BjFlglxMEanJTjF2D57/xXo6 tq2+8XnYZ5Vb2Xs8mX6IIf6ec16vPyOenhRqjR7cOjaflxRk9g35tG2pdzMBhog3M3t3 Tk5lCP77vBto9DGvX1+c3uwBigQndIyW7CQZiMA1pw/KBmoQcUdRZJYUcse+3zBdpF0N 6vXDh+k6tYPqoBVfz7TOnpoQ7WmI8jU1gc9LfOoA3V1BkG5aHMun2hnxKfgKW89lbNW6 5NhPPA9RVqKPzUcuPP2FF1p838CkhRRxCRjHKtc4rmfQSxIFdC13za6yRaXLPa4wjkNS v2Ig== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=FZI86kCx; arc=pass (i=1 spf=pass spfdomain=intel.com dkim=pass dkdomain=intel.com dmarc=pass fromdomain=intel.com); spf=pass (google.com: domain of linux-kernel+bounces-41151-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-41151-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. 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([172.25.112.68]) by orsmga003.jf.intel.com with ESMTP; 27 Jan 2024 02:08:52 -0800 From: Xin Li To: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, ravi.v.shankar@intel.com, andrew.cooper3@citrix.com Subject: [PATCH 2/2] x86/fred: Fix build with CONFIG_IA32_EMULATION=n Date: Sat, 27 Jan 2024 01:37:28 -0800 Message-ID: <20240127093728.1323-3-xin3.li@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240127093728.1323-1-xin3.li@intel.com> References: <20240127093728.1323-1-xin3.li@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789237841259967326 X-GMAIL-MSGID: 1789237841259967326 When CONFIG_IA32_EMULATION=n, int80_emulation() is NOT defined, fix it. Fixes: 5e0636a41485 ("x86/fred: FRED entry/exit and dispatch code") Link: https://lore.kernel.org/lkml/20240126100519.GBZbOD3xFB0v3mp5B1@fat_crate.local/ Reported-by: Borislav Petkov (AMD) Signed-off-by: Xin Li --- arch/x86/entry/entry_fred.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/entry/entry_fred.c b/arch/x86/entry/entry_fred.c index 06d00c60ea64..ac120cbdaaf2 100644 --- a/arch/x86/entry/entry_fred.c +++ b/arch/x86/entry/entry_fred.c @@ -62,11 +62,13 @@ static noinstr void fred_intx(struct pt_regs *regs) case X86_TRAP_OF: return exc_overflow(regs); +#ifdef CONFIG_IA32_EMULATION /* INT80 */ case IA32_SYSCALL_VECTOR: if (ia32_enabled()) return int80_emulation(regs); fallthrough; +#endif default: return exc_general_protection(regs, 0);