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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 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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_cr= ate.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) =20 -.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 --=20 2.43.0 From nobody Wed Dec 24 10:00:50 2025 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5AE21EB32 for ; Sat, 27 Jan 2024 10:08:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706350137; cv=none; b=VlyufzOkmL0lU4ZXs8Wasz+4ME9CW6sUKDMvYZaGFMiO1ny/oURMXKUNH6yfr2ve5CgnZATY1iyA9XVIc6Kh9UbEvb1l4H/OTIsa8n1nQiqC1vb1Aykhf8vnQN9GIpoj4O+pN5BhHyy5wzh7896eUg6ysZkCoql2px9EmkPUpA4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706350137; c=relaxed/simple; bh=Q0bhMrxpzirRicWRr76Yp7IjH2KX2X0N9M5pN7rBDOU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aXCrJA5d1Ao67+Nzonx7H8+L+pL+fOeHWgI6vchqdYM9+WQVV6luZO8toxXmIa660R/FI+/S8WrAIZOyF71lbg/H20m5cAZCKz9mLQX7Yi6v0IveWWN8gohebHcOb0CuLQstFnnILbw+5ViPLoePO1hAQR3l7XEDL7hz4thdgy8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=FZI86kCx; arc=none smtp.client-ip=192.198.163.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="FZI86kCx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706350135; x=1737886135; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Q0bhMrxpzirRicWRr76Yp7IjH2KX2X0N9M5pN7rBDOU=; b=FZI86kCxsv9/+Z7PgqLu8vqRIiE7Y0gSgE3/8JG0xO/u2Ad5BL0luetM BScQ1b484Gaykahg0otPDfZ5/8MjowzBrF7VJjft4BIMyvLnGXnNoto30 4dotHcxgQrmKVNteBrpdm9XQbFEWxVwVUnxeNYyA0c2qJip8HnqHuFP7s EY16FQ9WmDqbA2WrWpJ9aAxEncp6m+Bf5IEY1dBfGfTV7Ql8TBq76rZ8N LA4Z+i9zhe2mtTYFm7Af0CzYeiTjPvJhYqNmhDq+DNHabeD48n8lLe4ih WBRix6NYY4WaVmdZteqLw1Hm2BvO8VTQiOlwpHgF6SyDVFUG1a/I6ckEJ Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10964"; a="16190982" X-IronPort-AV: E=Sophos;i="6.05,220,1701158400"; d="scan'208";a="16190982" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2024 02:08:53 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10964"; a="736923492" X-IronPort-AV: E=Sophos;i="6.05,220,1701158400"; d="scan'208";a="736923492" Received: from unknown (HELO fred..) ([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 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When CONFIG_IA32_EMULATION=3Dn, 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_cr= ate.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); =20 +#ifdef CONFIG_IA32_EMULATION /* INT80 */ case IA32_SYSCALL_VECTOR: if (ia32_enabled()) return int80_emulation(regs); fallthrough; +#endif =20 default: return exc_general_protection(regs, 0); --=20 2.43.0