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Groups > linux.kernel > #1313120
| From | Borislav Petkov <bp@suse.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init |
| Date | 2016-01-20 12:00 +0100 |
| Message-ID | <qSYEz-5ea-15@gated-at.bofh.it> (permalink) |
| References | (5 earlier) <qStr4-D8-1@gated-at.bofh.it> <qSALU-5Mg-9@gated-at.bofh.it> <qSSfM-16M-41@gated-at.bofh.it> <qSSIO-1jE-65@gated-at.bofh.it> <qSSSu-1pe-35@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Jan 19, 2016 at 08:42:10PM -0800, H. Peter Anvin wrote:
> Right. I wish we could tag reference call sites as clean, not sources
> or targets. Sigh.
I was thinking about something like this:
From: Borislav Petkov <bp@suse.de>
Date: Wed, 20 Jan 2016 11:45:36 +0100
Subject: [PATCH] x86/alternatives: Add an auxilary section
Add .altinstr_aux for additional instructions which will be used before
and/or during patching. All stuff which needs more sophisticated
patching should go there. See next patch.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/kernel/vmlinux.lds.S | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 74e4bf11f562..35868bf529b9 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -244,6 +244,11 @@ SECTIONS
*/
.altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
*(.altinstr_replacement)
+ /*
+ * Auxiliary section for misc instruction patching tasks. See
+ * static_cpu_has(), for an example.
+ */
+ *(.altinstr_aux)
}
/*
--
2.3.5
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--
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[PATCH] x86: static_cpu_has_safe: discard dynamic check after init Brian Gerst <brgerst@gmail.com> - 2016-01-16 20:30 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-16 20:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Brian Gerst <brgerst@gmail.com> - 2016-01-16 21:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-17 11:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Brian Gerst <brgerst@gmail.com> - 2016-01-18 18:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Andy Lutomirski <luto@amacapital.net> - 2016-01-18 18:50 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-18 19:20 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Andy Lutomirski <luto@amacapital.net> - 2016-01-18 19:30 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-18 19:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-18 20:50 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-19 00:10 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-19 00:20 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-19 00:30 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-19 15:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-19 17:30 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-20 00:20 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Andy Lutomirski <luto@amacapital.net> - 2016-01-20 00:30 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Boris Petkov <bp@suse.de> - 2016-01-20 01:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 05:10 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-20 11:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 11:50 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-21 23:20 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-21 23:30 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-22 00:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-22 00:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-22 00:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-22 11:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-18 20:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-19 02:20 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-19 02:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-19 10:30 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 05:10 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Brian Gerst <brgerst@gmail.com> - 2016-01-20 05:40 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 05:50 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 12:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-20 12:10 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 15:50 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-20 12:00 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-20 16:10 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 16:20 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init Borislav Petkov <bp@suse.de> - 2016-01-20 17:10 +0100
Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init "H. Peter Anvin" <hpa@zytor.com> - 2016-01-20 17:20 +0100
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