From patchwork Wed Oct 4 21:19:43 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Garnier X-Patchwork-Id: 9985515 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 DD82760586 for ; Wed, 4 Oct 2017 21:22:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CB86128450 for ; Wed, 4 Oct 2017 21:22:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BB44A28C2C; Wed, 4 Oct 2017 21:22:56 +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 E3A1628450 for ; Wed, 4 Oct 2017 21:22:55 +0000 (UTC) Received: (qmail 15565 invoked by uid 550); 4 Oct 2017 21:21:14 -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 15455 invoked from network); 4 Oct 2017 21:21:09 -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=XkCron+4KNmGwxpZohlZ2xqOHQewKJThzCCzV1jj418=; b=mlmHQgb2zzf9tuJTlXEbWm850HCK+xRoW2KyBarEVXCoqfUq03D68v3kCIn9KShiwS m/RdF7JAo0wEZlCbFDpHPj1v3dXpwgg9xORQxZ9IbcpZHkKAO1AAKORMxll82laDCPcF FSRQbNY0sqN89Vd1cVIJfkgFEooh7Zu2IC9s0++cmD1h0mnnbsQTGGFkyxxjattFaH5F Unkgsqy44bIdsSImxhBm+U0MuLqsvx971Ch3T7VEvn9RhqPzeXYyYIRzHJ2HW8132XGg a6v/JxUmdRagVae3gpTW7S3frtRJeAambvbpf6WYEf+jQEs9wuDHRW1nUhAagew3WNK/ W9AQ== 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=XkCron+4KNmGwxpZohlZ2xqOHQewKJThzCCzV1jj418=; b=cBB7RnU13uRyoZSl3aROZ/rTAjQr+AFmQvFdhQyBgXzdZ9oydsylQ1Q5TVv+eH/43O KC3hmxCH0zl/pZHmquhOpM1ZbQTKGZoNqN0B8RpxpXqmGXD087NvBiHO3nQ4+2j9/B+2 6IconPwkm7oAQTUVgD9Cjs/0p7XcCk0aOTjkdqcpQV1EXws3b0UjLRuamE51VOf0eQYH 2iTYpie+j/U2ZfP3ch0AUFy0x5HyeUdYgMTGyKHLvAlP74aJV27w2RjCELkLQMD9Sjih Mc7uhcaW2U2bFSZTxhfmcduKCgGcltF3eRi5E2uaXkFe+ABgsNMsnip34aQbuaA5BMih A8fQ== X-Gm-Message-State: AMCzsaXMEtTe/RLOBEzUcVzVAzVCk/PEB8xTSdljIIHkSdi8EV2H/KgG QdfJUtu0ourUeNwIdPWL1LczXg== X-Google-Smtp-Source: AOwi7QAnLEK3asAMcYxoK8k3ZG5wjxy5LrAyn/rV9PzB6kofHzrQ9AGnLNWFk70xFuxnNlmVfqVB1A== X-Received: by 10.98.234.6 with SMTP id t6mr12211218pfh.45.1507152057285; Wed, 04 Oct 2017 14:20:57 -0700 (PDT) From: Thomas Garnier To: Herbert Xu , "David S . Miller" , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Peter Zijlstra , Josh Poimboeuf , Thomas Garnier , Arnd Bergmann , Kees Cook , 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 , Alexey Dobriyan , Andrew Morton , Paul Gortmaker , Chris Metcalf , "Paul E . McKenney" , Nicolas Pitre , Borislav Petkov , "Luis R . Rodriguez" , Greg Kroah-Hartman , Christopher Li , Steven Rostedt , Jason Baron , Dou Liyang , "Rafael J . Wysocki" , Mika Westerberg , 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 , Andrey Ryabinin , Jonathan Corbet , Matthew Wilcox , Michal Hocko , Peter Foley , Paul Bolle , Jiri Kosina , Rob Landley , "H . J . Lu" , 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, 4 Oct 2017 14:19:43 -0700 Message-Id: <20171004212003.28296-8-thgarnie@google.com> X-Mailer: git-send-email 2.14.2.920.gcf0c67979c-goog In-Reply-To: <20171004212003.28296-1-thgarnie@google.com> References: <20171004212003.28296-1-thgarnie@google.com> Subject: [kernel-hardening] [RFC v3 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" \