From: Thomas Garnier <thgarnie@google.com>
To: "Herbert Xu" <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"H . Peter Anvin" <hpa@zytor.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Josh Poimboeuf" <jpoimboe@redhat.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Kate Stewart" <kstewart@linuxfoundation.org>,
"Thomas Garnier" <thgarnie@google.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Philippe Ombredanne" <pombredanne@nexb.com>,
"Arnaldo Carvalho de Melo" <acme@redhat.com>,
"Andrey Ryabinin" <aryabinin@virtuozzo.com>,
"Matthias Kaehlcke" <mka@chromium.org>,
"Kees Cook" <keescook@chromium.org>,
"Tom Lendacky" <thomas.lendacky@amd.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
"Andy Lutomirski" <luto@kernel.org>,
"Dominik Brodowski" <linux@dominikbrodowski.net>,
"Borislav Petkov" <bp@alien8.de>, "Borislav Petkov" <bp@suse.de>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
"Len Brown" <len.brown@intel.com>, "Pavel Machek" <pavel@ucw.cz>,
"Juergen Gross" <jgross@suse.com>,
"Alok Kataria" <akataria@vmware.com>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Tejun Heo" <tj@kernel.org>, "Christoph Lameter" <cl@linux.com>,
"Dennis Zhou" <dennisszhou@gmail.com>,
"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
"David Woodhouse" <dwmw@amazon.co.uk>,
"Alexey Dobriyan" <adobriyan@gmail.com>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Nicolas Pitre" <nicolas.pitre@linaro.org>,
"Randy Dunlap" <rdunlap@infradead.org>,
"Luis R . Rodriguez" <mcgrof@kernel.org>,
"Christopher Li" <sparse@chrisli.org>,
"Jason Baron" <jbaron@akamai.com>,
"Ashish Kalra" <ashish@bluestacks.com>,
"Kyle McMartin" <kyle@redhat.com>,
"Dou Liyang" <douly.fnst@cn.fujitsu.com>,
"Lukas Wunner" <lukas@wunner.de>,
"Petr Mladek" <pmladek@suse.com>,
"Sergey Senozhatsky" <sergey.senozhatsky.work@gmail.com>,
"Masahiro Yamada" <yamada.masahiro@socionext.com>,
"Ingo Molnar" <mingo@kernel.org>,
"Nicholas Piggin" <npiggin@gmail.com>,
"Cao jin" <caoj.fnst@cn.fujitsu.com>,
"H . J . Lu" <hjl.tools@gmail.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Joerg Roedel" <joro@8bytes.org>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Rik van Riel" <riel@redhat.com>,
"Jia Zhang" <qianyue.zj@alibaba-inc.com>,
"Jiri Slaby" <jslaby@suse.cz>, "Kyle Huey" <me@kylehuey.com>,
"Jonathan Corbet" <corbet@lwn.net>,
"Matthew Wilcox" <mawilcox@microsoft.com>,
"Michal Hocko" <mhocko@suse.com>, "Rob Landley" <rob@landley.net>,
"Baoquan He" <bhe@redhat.com>,
"Daniel Micay" <danielmicay@gmail.com>,
"Jan H . Schönherr" <jschoenh@amazon.de>
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 11/27] x86/power/64: Adapt assembly for PIE support
Date: Tue, 13 Mar 2018 13:59:29 -0700 [thread overview]
Message-ID: <20180313205945.245105-12-thgarnie@google.com> (raw)
In-Reply-To: <20180313205945.245105-1-thgarnie@google.com>
Change the assembly code to use only relative references of symbols for the
kernel 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 <thgarnie@google.com>
---
arch/x86/power/hibernate_asm_64.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/power/hibernate_asm_64.S b/arch/x86/power/hibernate_asm_64.S
index ce8da3a0412c..6fdd7bbc3c33 100644
--- a/arch/x86/power/hibernate_asm_64.S
+++ b/arch/x86/power/hibernate_asm_64.S
@@ -24,7 +24,7 @@
#include <asm/frame.h>
ENTRY(swsusp_arch_suspend)
- movq $saved_context, %rax
+ leaq saved_context(%rip), %rax
movq %rsp, pt_regs_sp(%rax)
movq %rbp, pt_regs_bp(%rax)
movq %rsi, pt_regs_si(%rax)
@@ -115,7 +115,7 @@ ENTRY(restore_registers)
movq %rax, %cr4; # turn PGE back on
/* We don't restore %rax, it must be 0 anyway */
- movq $saved_context, %rax
+ leaq saved_context(%rip), %rax
movq pt_regs_sp(%rax), %rsp
movq pt_regs_bp(%rax), %rbp
movq pt_regs_si(%rax), %rsi
--
2.16.2.660.g709887971b-goog
next prev parent reply other threads:[~2018-03-13 20:59 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-13 20:59 [PATCH v2 00/27] x86: PIE support and option to extend KASLR randomization Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 01/27] x86/crypto: Adapt assembly for PIE support Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 02/27] x86: Use symbol name on bug table " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 03/27] x86: Use symbol name in jump " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 04/27] x86: Add macro to get symbol address " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 05/27] x86: relocate_kernel - Adapt assembly " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 06/27] x86/entry/64: " Thomas Garnier
2018-03-14 10:29 ` Peter Zijlstra
2018-03-14 15:54 ` Christopher Lameter
2018-03-14 17:09 ` Thomas Garnier
2018-03-15 10:18 ` Paolo Bonzini
2018-03-13 20:59 ` [PATCH v2 07/27] x86: pm-trace - " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 08/27] x86/CPU: " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 09/27] x86/acpi: " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 10/27] x86/boot/64: " Thomas Garnier
2018-03-13 20:59 ` Thomas Garnier [this message]
2018-03-13 20:59 ` [PATCH v2 12/27] x86/paravirt: " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 13/27] x86/boot/64: Build head64.c as mcmodel large when PIE is enabled Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 14/27] x86/percpu: Adapt percpu for PIE support Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 15/27] compiler: Option to default to hidden symbols Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 16/27] compiler: Option to add PROVIDE_HIDDEN replacement for weak symbols Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 17/27] x86/relocs: Handle PIE relocations Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 18/27] xen: Adapt assembly for PIE support Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 19/27] kvm: " Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 20/27] x86: Support global stack cookie Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 21/27] x86/ftrace: Adapt function tracing for PIE support Thomas Garnier
2018-03-14 10:35 ` Peter Zijlstra
2018-03-13 20:59 ` [PATCH v2 22/27] x86/modules: Add option to start module section after kernel Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 23/27] x86/modules: Adapt module loading for PIE support Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 24/27] x86/mm: Make the x86 GOT read-only Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 25/27] x86/pie: Add option to build the kernel as PIE Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 26/27] x86/relocs: Add option to generate 64-bit relocations Thomas Garnier
2018-03-13 20:59 ` [PATCH v2 27/27] x86/kaslr: Add option to extend KASLR range from 1GB to 3GB Thomas Garnier
2018-03-15 8:48 ` [PATCH v2 00/27] x86: PIE support and option to extend KASLR randomization Pavel Machek
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