From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2B3A41869 for ; Fri, 29 Apr 2022 20:37:34 +0000 (UTC) Received: by mail-yb1-f202.google.com with SMTP id 9-20020a250909000000b006484b89c979so8288167ybj.21 for ; Fri, 29 Apr 2022 13:37:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=dAD7TU5bxFw4+mtb6XZpH6YJckvLCjHt6y7FOMRwG5M=; b=sF4rYvxurIR8HSYS3JDDW5zN4WVtRvWJLoykvKPRZlF2xUvwg49nOitD3FnwryJfzG q7yNxY2NXlCrhtPLxo9ZiAN5PVyxyXvMyHMP8TI78vutHXo4STj7VEhf7492C2Y+tsV+ /S6COa3b8gLTsTS6KwkR/kpJc/tmJ0jEDFXPv4WRePnoKxxqRUFo+kdbrbCuldPWepY4 scMjYHWSDzPDQcxdpgp2KwRs/AmLjQ+Jo93U1R8SCCGwY4XZEVOved3HyMyFTtqqZKtg fc+57Z4pGr2BfvmrY+PS4Z/ooYTznRcTEbHo9uQI0RVSXnPSEr9Piu6r59wPLL/8Og0A AM3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=dAD7TU5bxFw4+mtb6XZpH6YJckvLCjHt6y7FOMRwG5M=; b=a/f3LDr6Ozzz7kGIyZSOc5b1LQ3YqyJSu3pwfachQC75qlX0JlrQHVAsoXOOrMtSRv GqBHpW9hJKhY8C3XTuQuSTp+2zC3zGFXZNE9X7g1km0vjfdxJS8kjxLwFnP/lSQLVMGp HcZ2g8lsUFVH9cZvBv/7gvcIiyNbVbqLwov6/C6Y6shjW3IbcSqDnlQ/c2gaiuBN//bW e5mcuD2tJkA8uL+P/QZ6io1aNmvgRDB/abzKV5a5USW9mG4cyagp7taVMUi/ClbAmqwQ lXc1Mmw24Bxbn4XK5o4ZKOPTwjtQRVnoGECCZatRGbvvB0a+Ox4zlysme9NsGa6rw1A3 0MTQ== X-Gm-Message-State: AOAM531C2dJGduFu3lJh5nZoCFxUqfRiAimBjHtAB1dyIl8JWUKrlsyC dRzsqTrVzKnH7+VeUzLJDJpySAlbw6XU6xvj6sk= X-Google-Smtp-Source: ABdhPJyNThaiFHtVkOlq27b/IsKVC7XcaL87tiPVfnWjDS5LKEWWfPb5Rc+LRi2xmrClI0aQlv/FhNCy8ypRoBYPdOA= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:351:bea9:f158:1021]) (user=samitolvanen job=sendgmr) by 2002:a25:1443:0:b0:63d:6c01:d26f with SMTP id 64-20020a251443000000b0063d6c01d26fmr1397777ybu.296.1651264653259; Fri, 29 Apr 2022 13:37:33 -0700 (PDT) Date: Fri, 29 Apr 2022 13:36:42 -0700 In-Reply-To: <20220429203644.2868448-1-samitolvanen@google.com> Message-Id: <20220429203644.2868448-20-samitolvanen@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20220429203644.2868448-1-samitolvanen@google.com> X-Developer-Key: i=samitolvanen@google.com; a=openpgp; fpr=35CCFB63B283D6D3AEB783944CB5F6848BBC56EE X-Developer-Signature: v=1; a=openpgp-sha256; l=867; h=from:subject; bh=up7BEek35o0M0XxxZGb0YVxeAOsDA2frVViAIISPcAE=; b=owEB7QES/pANAwAKAUy19oSLvFbuAcsmYgBibExYVHtzXXfVkfpC4f30GmwEWwVNyJTrvW77sDTZ wzWWtoaJAbMEAAEKAB0WIQQ1zPtjsoPW0663g5RMtfaEi7xW7gUCYmxMWAAKCRBMtfaEi7xW7mGLDA CTEoA/YLkPzO4RCaefNoqVsLm/slm3eKAb0EBTNjPQnz5eXoKCVQRKj9PWoPlcKYv0zhhpUXtVDSTh ac1XDqL26rGZoUjODIYRAKzZesDGF6mk0vMZegM83LL0VgP+HiMZb3/+JRnyO5lXl9biI+PKRs9yao cB6eP6nxZ2oJoZ3wi8wRjZa2dq6HwI1vjgqvc6wkIVZQB1hn1iiX4jK2s+b1RI6sSKL1KoBnu8ruUc XnRlTBjlHvsg3sv+Oo60X+xtVo4jt5qSlxPjVS36s+rcz8PjrRYMwuyiX1owAbYAx6891grqZ/Rtja zgQtJMT25Vbp1i0Ch4rkcNHucaP6MceaEMqi96kngq6U8NlFl+N4JSFjR9NwvRPX4zPYA/hjeYCpG/ AzTNfBREHLnSC45xKO3dgHPlu7+SNR2AwuC0gBm9U9UpzBYdOAHJEKi3xrii9tnkvtP20793/d3GJb h5zaP+BZ4RGrD05vaq3ji8gcCm/xu4Nv1ehokRtYYrvXM= X-Mailer: git-send-email 2.36.0.464.gb9c8b46e94-goog Subject: [RFC PATCH 19/21] x86/purgatory: Disable CFI From: Sami Tolvanen To: linux-kernel@vger.kernel.org Cc: Kees Cook , Josh Poimboeuf , Peter Zijlstra , x86@kernel.org, Catalin Marinas , Will Deacon , Mark Rutland , Nathan Chancellor , Nick Desaulniers , Joao Moreira , Sedat Dilek , Steven Rostedt , linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Disable CONFIG_CFI_CLANG for the stand-alone purgatory.ro. Signed-off-by: Sami Tolvanen Reviewed-by: Nick Desaulniers Tested-by: Nick Desaulniers Tested-by: Sedat Dilek --- arch/x86/purgatory/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index ae53d54d7959..b3fa947fa38b 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -55,6 +55,10 @@ ifdef CONFIG_RETPOLINE PURGATORY_CFLAGS_REMOVE += $(RETPOLINE_CFLAGS) endif +ifdef CONFIG_CFI_CLANG +PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_CFI) +endif + CFLAGS_REMOVE_purgatory.o += $(PURGATORY_CFLAGS_REMOVE) CFLAGS_purgatory.o += $(PURGATORY_CFLAGS) -- 2.36.0.464.gb9c8b46e94-goog