From patchwork Wed Oct 11 20:30:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Garnier X-Patchwork-Id: 10000531 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 F1D006037F for ; Wed, 11 Oct 2017 20:33:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E69BA28B37 for ; Wed, 11 Oct 2017 20:33:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DA36F28B6A; Wed, 11 Oct 2017 20:33:07 +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=-4.1 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID 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 1B3A428B37 for ; Wed, 11 Oct 2017 20:33:06 +0000 (UTC) Received: (qmail 14196 invoked by uid 550); 11 Oct 2017 20:31:30 -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 14112 invoked from network); 11 Oct 2017 20:31:26 -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=afu2Kcgy8DQs3K2gl0x5TE1IdlGd54KLr01SdjOmZ/8=; b=UUu7qInvbsoQvQF//bWSvdLcQm/KkZgs3OxT5frAPT/4F89pDdhoFUJOx3pWWEB2Z+ L3VoSPFyFIV/bbtTs0LJ6PPOE7btHQLIn2hfxx0I52t/UZOMmpWn1qLYNoxok/9syi3q mcJLMIxiyDSlvMNjd0CJIbzbR8FJ3EJLRLIybgoD/qYAh7giAQmvqEZl0PFPLbeXWJQG LAk7+s0bh1kXC2dZ2rjZU+6SGw33rAiG6Uuo5nCQ4gLhtYC33wQn6mZw4oYYBLEK/rtt 9C4uyigXJMuoKWidMw2Z2UP0i7chNjKbm6dJWFF2tKpncgprq+Vcbwu81NAFOcHE+J7J e0iQ== 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=afu2Kcgy8DQs3K2gl0x5TE1IdlGd54KLr01SdjOmZ/8=; b=PK4K2YbxYaeBAm69nDnJQMnOeOlHvgfCON9UpFviEsBFlmDTCxM4geu+BCKOqp8KoG tt6fRDjQC6IKa6LsDPtdXntzLfkXhH45IAFDO+fNmlnDPBaqBsi7eFt7IHh/4yan59IX aWyCvBDVQ+IsyIQXK8fmhS/LeLTRZ49fowsitNUymp0cFVHU4fMTTUj/4gRFB68QYIyT eYtK4b6GoUfWQGqQWMVNOFWih+DW30iC8yI0JI+kB+tD6Gzh1HELvHGF17GFdutv78Yu yGjQuHa7K+146liMrFXCKPeP3twqzKNo18UAhDz/NNtbSz6PeQTNy8c3AmX56TY1Mg0l rZRQ== X-Gm-Message-State: AMCzsaX5d2B7yjgEVkFLI06n0n8GMOePgHusjEcVIY8XitXirh+b+GYv /dDVCewolIlov5rKHpjoEWN4wA== X-Google-Smtp-Source: AOwi7QBgRQOzr1oxDs60I5eR5r/qFHITSodAypErOWKykIlFpqcgCco1YygQzx/WRrUvn6ngOfCvXQ== X-Received: by 10.99.186.92 with SMTP id l28mr154359pgu.337.1507753874803; Wed, 11 Oct 2017 13:31:14 -0700 (PDT) From: Thomas Garnier To: Herbert Xu , "David S . Miller" , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Peter Zijlstra , Josh Poimboeuf , Arnd Bergmann , Thomas Garnier , Kees Cook , Andrey Ryabinin , Matthias Kaehlcke , Tom Lendacky , Andy Lutomirski , "Kirill A . Shutemov" , Borislav Petkov , "Rafael J . Wysocki" , Len Brown , Pavel Machek , Juergen Gross , Chris Wright , Alok Kataria , Rusty Russell , Tejun Heo , Christoph Lameter , Boris Ostrovsky , Paul Gortmaker , Andrew Morton , Alexey Dobriyan , "Paul E . McKenney" , Nicolas Pitre , Borislav Petkov , "Luis R . Rodriguez" , Greg Kroah-Hartman , Christopher Li , Steven Rostedt , Jason Baron , Mika Westerberg , Dou Liyang , "Rafael J . Wysocki" , Lukas Wunner , Masahiro Yamada , Alexei Starovoitov , Daniel Borkmann , Markus Trippelsdorf , Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Joerg Roedel , Rik van Riel , David Howells , Ard Biesheuvel , Waiman Long , Kyle Huey , Jonathan Corbet , Michal Hocko , Peter Foley , Paul Bolle , Jiri Kosina , "H . J . Lu" , Rob Landley , Baoquan He , =?UTF-8?q?Jan=20H=20=2E=20Sch=C3=B6nherr?= , Daniel Micay 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 Date: Wed, 11 Oct 2017 13:30:07 -0700 Message-Id: <20171011203027.11248-8-thgarnie@google.com> X-Mailer: git-send-email 2.15.0.rc0.271.g36b669edcc-goog In-Reply-To: <20171011203027.11248-1-thgarnie@google.com> References: <20171011203027.11248-1-thgarnie@google.com> Subject: [kernel-hardening] [PATCH v1 07/27] x86: pm-trace - Adapt assembly for PIE support X-Virus-Scanned: ClamAV using ClamSMTP Change assembly to use the new _ASM_GET_PTR 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 7b7ac42c3661..a3801261f0dd 100644 --- a/arch/x86/include/asm/pm-trace.h +++ b/arch/x86/include/asm/pm-trace.h @@ -7,7 +7,7 @@ do { \ if (pm_trace_enabled) { \ const void *tracedata; \ - asm volatile(_ASM_MOV " $1f,%0\n" \ + asm volatile(_ASM_GET_PTR(1f, %0) "\n" \ ".section .tracedata,\"a\"\n" \ "1:\t.word %c1\n\t" \ _ASM_PTR " %c2\n" \