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>,
Thomas Garnier <thgarnie@google.com>,
Philippe Ombredanne <pombredanne@nexb.com>,
Kate Stewart <kstewart@linuxfoundation.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Yonghong Song <yhs@fb.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
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
Cc: linux-arch@vger.kernel.org, kvm@vger.kernel.org,
linux-pm@vger.kernel.org, x86@kernel.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-sparse@vger.kernel.org, linux-crypto@vger.kernel.org,
kernel-hardening@lists.openwall.com,
xen-devel@lists.xenproject.org
Subject: [PATCH v3 02/27] x86: Use symbol name on bug table for PIE support
Date: Wed, 23 May 2018 12:53:56 -0700 [thread overview]
Message-ID: <20180523195421.180248-3-thgarnie__31405.395808588$1527105251$gmane$org@google.com> (raw)
In-Reply-To: <20180523195421.180248-1-thgarnie@google.com>
Replace the %c constraint with %P. The %c is incompatible with PIE
because it implies an immediate value whereas %P reference a symbol.
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/include/asm/bug.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h
index 6804d6642767..3d690a4abf50 100644
--- a/arch/x86/include/asm/bug.h
+++ b/arch/x86/include/asm/bug.h
@@ -35,7 +35,7 @@ do { \
asm volatile("1:\t" ins "\n" \
".pushsection __bug_table,\"aw\"\n" \
"2:\t" __BUG_REL(1b) "\t# bug_entry::bug_addr\n" \
- "\t" __BUG_REL(%c0) "\t# bug_entry::file\n" \
+ "\t" __BUG_REL(%P0) "\t# bug_entry::file\n" \
"\t.word %c1" "\t# bug_entry::line\n" \
"\t.word %c2" "\t# bug_entry::flags\n" \
"\t.org 2b+%c3\n" \
--
2.17.0.441.gb46fe60e1d-goog
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next prev parent reply other threads:[~2018-05-23 19:55 UTC|newest]
Thread overview: 190+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-23 19:53 [PATCH v3 00/27] x86: PIE support and option to extend KASLR randomization Thomas Garnier via Virtualization
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier via Virtualization
2018-05-23 19:53 ` [PATCH v3 01/27] x86/crypto: Adapt assembly for PIE support Thomas Garnier via Virtualization
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier via Virtualization
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` [PATCH v3 02/27] x86: Use symbol name on bug table " Thomas Garnier via Virtualization
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier via Virtualization
2018-05-23 19:53 ` Thomas Garnier [this message]
2018-05-23 19:53 ` [PATCH v3 03/27] x86: Use symbol name in jump " Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier via Virtualization
2018-05-23 19:53 ` [PATCH v3 04/27] x86: Add macro to get symbol address " Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier via Virtualization
2018-05-23 19:53 ` [PATCH v3 05/27] x86: relocate_kernel - Adapt assembly " Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier
2018-05-23 19:53 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 06/27] x86/entry/64: " Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 07/27] x86: pm-trace - " Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 08/27] x86/CPU: " Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 09/27] x86/acpi: " Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-24 11:03 ` Pavel Machek
2018-05-24 11:03 ` Pavel Machek
2018-05-24 16:35 ` Thomas Garnier
2018-05-24 16:35 ` Thomas Garnier via Virtualization
2018-05-24 16:35 ` Thomas Garnier
2018-05-24 16:35 ` Thomas Garnier
2018-05-24 16:35 ` Thomas Garnier
2018-05-25 9:14 ` Pavel Machek
2018-05-25 9:14 ` Pavel Machek
2018-05-25 9:14 ` Pavel Machek
2018-05-25 17:00 ` Thomas Garnier via Virtualization
2018-05-25 17:00 ` Thomas Garnier
2018-05-25 17:00 ` Thomas Garnier
2018-05-25 17:00 ` Thomas Garnier
2018-05-29 12:31 ` Pavel Machek
2018-05-29 12:31 ` Pavel Machek
2018-05-29 12:31 ` Pavel Machek
2018-05-29 15:55 ` Thomas Garnier
2018-05-29 15:55 ` Thomas Garnier
2018-05-29 15:55 ` Thomas Garnier
2018-05-29 15:55 ` Thomas Garnier
2018-05-29 15:55 ` Thomas Garnier via Virtualization
2018-05-29 12:31 ` Pavel Machek
2018-05-25 17:00 ` Thomas Garnier
2018-05-25 9:14 ` Pavel Machek
2018-05-25 9:14 ` Pavel Machek
2018-05-24 11:03 ` Pavel Machek
2018-05-24 11:03 ` Pavel Machek
2018-05-23 19:54 ` [PATCH v3 10/27] x86/boot/64: " Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 11/27] x86/power/64: " Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-24 11:03 ` Pavel Machek
2018-05-24 11:03 ` Pavel Machek
2018-05-24 11:03 ` Pavel Machek
2018-05-24 16:37 ` Thomas Garnier via Virtualization
2018-05-24 16:37 ` Thomas Garnier
2018-05-24 16:37 ` Thomas Garnier via Virtualization
2018-05-25 9:10 ` Pavel Machek
2018-05-25 9:10 ` Pavel Machek
2018-05-25 9:10 ` Pavel Machek
2018-05-25 9:10 ` Pavel Machek
2018-05-24 16:37 ` Thomas Garnier
2018-05-24 11:03 ` Pavel Machek
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 12/27] x86/paravirt: " Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 13/27] x86/boot/64: Build head64.c as mcmodel large when PIE is enabled Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 14/27] x86/percpu: Adapt percpu for PIE support Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 15/27] compiler: Option to default to hidden symbols Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 16/27] compiler: Option to add PROVIDE_HIDDEN replacement for weak symbols Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 21:16 ` Randy Dunlap
2018-05-23 21:16 ` Randy Dunlap
2018-05-23 21:16 ` Randy Dunlap
2018-05-23 21:16 ` Randy Dunlap
2018-05-23 21:16 ` Randy Dunlap
2018-05-23 19:54 ` [PATCH v3 17/27] x86/relocs: Handle PIE relocations Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 18/27] xen: Adapt assembly for PIE support Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-24 9:11 ` Juergen Gross
2018-05-24 9:11 ` Juergen Gross
2018-05-24 9:11 ` Juergen Gross
2018-05-24 9:11 ` Juergen Gross
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 19/27] kvm: " Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 20/27] x86: Support global stack cookie Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 21/27] x86/ftrace: Adapt function tracing for PIE support Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-24 11:40 ` Petr Mladek
2018-05-24 11:40 ` Petr Mladek
2018-05-24 11:40 ` Petr Mladek
2018-05-24 20:16 ` Steven Rostedt
2018-05-24 20:16 ` Steven Rostedt
2018-05-24 20:16 ` Steven Rostedt
2018-05-24 20:41 ` Thomas Garnier
2018-05-24 20:41 ` Thomas Garnier via Virtualization
2018-05-24 20:41 ` Thomas Garnier
2018-05-24 20:41 ` Thomas Garnier via Virtualization
2018-05-29 18:37 ` Thomas Garnier via Virtualization
2018-05-29 18:37 ` Thomas Garnier
2018-05-29 18:37 ` Thomas Garnier via Virtualization
2018-05-29 18:37 ` Thomas Garnier
2018-05-24 20:16 ` Steven Rostedt
2018-05-24 11:40 ` Petr Mladek
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 22/27] x86/modules: Add option to start module section after kernel Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 23/27] x86/modules: Adapt module loading for PIE support Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 21:26 ` Randy Dunlap
2018-05-23 21:26 ` Randy Dunlap
2018-05-23 21:26 ` Randy Dunlap
2018-05-23 21:26 ` Randy Dunlap
2018-05-23 22:01 ` Thomas Garnier
2018-05-23 22:01 ` Thomas Garnier
2018-05-23 22:01 ` Thomas Garnier
2018-05-23 22:01 ` Thomas Garnier
2018-05-23 23:07 ` Randy Dunlap
2018-05-23 23:07 ` Randy Dunlap
2018-05-23 23:07 ` Randy Dunlap
2018-05-23 23:07 ` Randy Dunlap
2018-05-23 23:07 ` Randy Dunlap
2018-05-23 22:01 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 24/27] x86/mm: Make the x86 GOT read-only Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 25/27] x86/pie: Add option to build the kernel as PIE Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 26/27] x86/relocs: Add option to generate 64-bit relocations Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 27/27] x86/kaslr: Add option to extend KASLR range from 1GB to 3GB Thomas Garnier via Virtualization
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
2018-05-23 19:54 ` Thomas Garnier
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