From: Thomas Garnier <thgarnie@chromium.org>
To: kernel-hardening@lists.openwall.com
Cc: kristen@linux.intel.com, keescook@chromium.org,
Thomas Garnier <thgarnie@chromium.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Peter Zijlstra <peterz@infradead.org>,
Nadav Amit <namit@vmware.com>, Jann Horn <jannh@google.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v9 02/11] x86: Add macro to get symbol address for PIE support
Date: Tue, 30 Jul 2019 12:12:46 -0700 [thread overview]
Message-ID: <20190730191303.206365-3-thgarnie@chromium.org> (raw)
In-Reply-To: <20190730191303.206365-1-thgarnie@chromium.org>
Add a new _ASM_MOVABS macro to fetch a symbol address. It will be used
to replace "_ASM_MOV $<symbol>, %dst" code construct that are not
compatible with PIE.
Signed-off-by: Thomas Garnier <thgarnie@chromium.org>
---
arch/x86/include/asm/asm.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 3ff577c0b102..3a686057e882 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -30,6 +30,7 @@
#define _ASM_ALIGN __ASM_SEL(.balign 4, .balign 8)
#define _ASM_MOV __ASM_SIZE(mov)
+#define _ASM_MOVABS __ASM_SEL(movl, movabsq)
#define _ASM_INC __ASM_SIZE(inc)
#define _ASM_DEC __ASM_SIZE(dec)
#define _ASM_ADD __ASM_SIZE(add)
--
2.22.0.770.g0f2c4a37fd-goog
next prev parent reply other threads:[~2019-07-30 19:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-30 19:12 [PATCH v9 00/11] x86: PIE support to extend KASLR randomization Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 01/11] x86/crypto: Adapt assembly for PIE support Thomas Garnier
2019-08-05 16:32 ` Borislav Petkov
2019-08-05 16:54 ` Kees Cook
2019-08-05 17:27 ` Borislav Petkov
2019-08-05 17:53 ` Thomas Garnier
2019-07-30 19:12 ` Thomas Garnier [this message]
2019-07-30 19:12 ` [PATCH v9 03/11] x86: relocate_kernel - " Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 04/11] x86/entry/64: " Thomas Garnier
2019-08-05 17:28 ` Borislav Petkov
2019-08-05 17:50 ` Thomas Garnier
2019-08-06 5:08 ` Borislav Petkov
2019-08-06 8:30 ` Peter Zijlstra
2019-08-06 12:35 ` Borislav Petkov
2019-08-06 13:59 ` Steven Rostedt
2019-08-06 15:35 ` Borislav Petkov
2019-07-30 19:12 ` [PATCH v9 05/11] x86: pm-trace - " Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 06/11] x86/CPU: " Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 07/11] x86/acpi: " Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 08/11] x86/boot/64: " Thomas Garnier
2019-08-09 17:30 ` Borislav Petkov
2019-10-29 21:29 ` Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 09/11] x86/power/64: " Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 10/11] x86/paravirt: " Thomas Garnier
2019-07-31 12:53 ` Peter Zijlstra
2019-08-12 12:55 ` Borislav Petkov
2019-10-29 21:30 ` Thomas Garnier
2019-07-30 19:12 ` [PATCH v9 11/11] x86/alternatives: " Thomas Garnier
2019-08-12 13:57 ` Borislav Petkov
2019-10-29 21:31 ` Thomas Garnier
2019-08-06 15:43 ` [PATCH v9 00/11] x86: PIE support to extend KASLR randomization Borislav Petkov
2019-08-06 15:50 ` Peter Zijlstra
2019-08-29 19:55 ` Thomas Garnier
2019-09-06 23:22 ` Thomas Garnier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190730191303.206365-3-thgarnie@chromium.org \
--to=thgarnie@chromium.org \
--cc=bp@alien8.de \
--cc=hpa@zytor.com \
--cc=jannh@google.com \
--cc=keescook@chromium.org \
--cc=kernel-hardening@lists.openwall.com \
--cc=kristen@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=namit@vmware.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).