From patchwork Tue Mar 13 20:59:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Garnier X-Patchwork-Id: 10280767 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8A1CC6038F for ; Tue, 13 Mar 2018 21:02:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 79379266F3 for ; Tue, 13 Mar 2018 21:02:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6B50126785; Tue, 13 Mar 2018 21:02:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.3 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.wl.linuxfoundation.org (Postfix) with SMTP id 9233C266F3 for ; Tue, 13 Mar 2018 21:02:38 +0000 (UTC) Received: (qmail 20252 invoked by uid 550); 13 Mar 2018 21:00:43 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Delivered-To: mailing list kernel-hardening@lists.openwall.com Received: (qmail 20149 invoked from network); 13 Mar 2018 21:00:39 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=6MJgsB7Hp0yid3AGqLbnRCCwxImFWzpHvD6YuEEu5kM=; b=jPqD9YjOQVkdUjWiFkISkYlmU91Tv+kvLO04ro5Bv34tlfqMTxV6yXGeXRhkkpAsr7 MkA+28vAGqndjsKaIu93d8haDEYThHC8iNy1K6mWpnJWO9t5KOIAjIH99uFtdUvthbRf AySL0mt9a0F6t19I9dZ9gXWZdoqRofTMqCVebTYroXvPOUAebO7tWMn3tH8iNbXaTo2B Q0YYHztxS3DdNbkDTPFaEeOHnp+fEC4qjewgCQ74KfK0ccwrz/nAHdIu6+KpsbYNKiXn tgUrqfWktzFrip2HeAJ4F7S2NVtzW4J3qupFIbTO3i+nuKbJymM8gVACcfaUW+colpTO vvqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=6MJgsB7Hp0yid3AGqLbnRCCwxImFWzpHvD6YuEEu5kM=; b=Ie+8ZrKNbEpx+2s4pfa2F+IQ663ZzQDizXuJi2/lPbV3NhAcu8lfYZju2DKgGZBSgt 99O3v1YXv0iJ0GHjkLbl8PHQ51gLZXnhsf5Q6+JG+7W4zIZ4fxPMvxft/a2GDAjKaDxe 0dYVjpOEEuFbyP9UUDG0/hU4ch374BT9W2C6u0kbhp1UR+WaHT3nkTg5H2CypXoWN0bG XzM70QV00nSHtLyR8Pd5MTZ66ypAzFv/MHnXcRn7YQKQg9iFXc03HSUtUb+pB0JL2Cd6 arqf88a6M7y0CnHuweRSH4pfYwZHJoKMH5hm2IBd040zFblCfQC3LzD5qyVQF1i0To7k xtJA== X-Gm-Message-State: AElRT7ED5MS09gtZBh/Jk+GgROO0Bz1uxhZFXd3CYF85vdFL5DoVYwBL /r0grhumGJQy/KbB9f3EOzlP7A== X-Google-Smtp-Source: AG47ELu6PtT+lC1xMj/yvbRBqG8AQb7kCLqZsvZMqbTxFCiShmcEaZ5XYqTZhTZ/NV1dYUKGeNzGjg== X-Received: by 10.99.107.131 with SMTP id g125mr1582424pgc.16.1520974826032; Tue, 13 Mar 2018 14:00:26 -0700 (PDT) From: Thomas Garnier To: Herbert Xu , "David S . Miller" , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Peter Zijlstra , Josh Poimboeuf , Greg Kroah-Hartman , Kate Stewart , Thomas Garnier , Arnd Bergmann , Philippe Ombredanne , Arnaldo Carvalho de Melo , Andrey Ryabinin , Matthias Kaehlcke , Kees Cook , Tom Lendacky , "Kirill A . Shutemov" , Andy Lutomirski , Dominik Brodowski , Borislav Petkov , Borislav Petkov , "Rafael J . Wysocki" , Len Brown , Pavel Machek , Juergen Gross , Alok Kataria , Steven Rostedt , Tejun Heo , Christoph Lameter , Dennis Zhou , Boris Ostrovsky , David Woodhouse , Alexey Dobriyan , "Paul E . McKenney" , Andrew Morton , Nicolas Pitre , Randy Dunlap , "Luis R . Rodriguez" , Christopher Li , Jason Baron , Ashish Kalra , Kyle McMartin , Dou Liyang , Lukas Wunner , Petr Mladek , Sergey Senozhatsky , Masahiro Yamada , Ingo Molnar , Nicholas Piggin , Cao jin , "H . J . Lu" , Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Joerg Roedel , Dave Hansen , Rik van Riel , Jia Zhang , Jiri Slaby , Kyle Huey , Jonathan Corbet , Matthew Wilcox , Michal Hocko , Rob Landley , Baoquan He , Daniel Micay , =?UTF-8?q?Jan=20H=20=2E=20Sch=C3=B6nherr?= Cc: x86@kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-arch@vger.kernel.org, linux-sparse@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, kernel-hardening@lists.openwall.com Subject: [PATCH v2 07/27] x86: pm-trace - Adapt assembly for PIE support Date: Tue, 13 Mar 2018 13:59:25 -0700 Message-Id: <20180313205945.245105-8-thgarnie@google.com> X-Mailer: git-send-email 2.16.2.660.g709887971b-goog In-Reply-To: <20180313205945.245105-1-thgarnie@google.com> References: <20180313205945.245105-1-thgarnie@google.com> X-Virus-Scanned: ClamAV using ClamSMTP Change assembly to use the new _ASM_MOVABS macro instead of _ASM_MOV for the assembly to be PIE compatible. Position Independent Executable (PIE) support will allow to extended the KASLR randomization range below the -2G memory limit. Signed-off-by: Thomas Garnier --- arch/x86/include/asm/pm-trace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/asm/pm-trace.h b/arch/x86/include/asm/pm-trace.h index bfa32aa428e5..972070806ce9 100644 --- a/arch/x86/include/asm/pm-trace.h +++ b/arch/x86/include/asm/pm-trace.h @@ -8,7 +8,7 @@ do { \ if (pm_trace_enabled) { \ const void *tracedata; \ - asm volatile(_ASM_MOV " $1f,%0\n" \ + asm volatile(_ASM_MOVABS " $1f,%0\n" \ ".section .tracedata,\"a\"\n" \ "1:\t.word %c1\n\t" \ _ASM_PTR " %c2\n" \