From: Quentin Casasnovas <quentin.casasnovas@oracle.com>
To: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>, X86 ML <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Oleg Nesterov <oleg@redhat.com>,
Andy Lutomirski <luto@amacapital.net>
Subject: Re: [PATCH] x86/xsave: Robustify and merge macros
Date: Fri, 3 Apr 2015 16:14:26 +0200 [thread overview]
Message-ID: <20150403141426.GE14902@chrystal.uk.oracle.com> (raw)
In-Reply-To: <20150403140630.GD14902@chrystal.uk.oracle.com>
On Fri, Apr 03, 2015 at 04:06:30PM +0200, Quentin Casasnovas wrote:
> On Thu, Apr 02, 2015 at 06:12:59PM +0200, Borislav Petkov wrote:
> > On Thu, Apr 02, 2015 at 05:52:10PM +0200, Quentin Casasnovas wrote:
> > > I've tried compiling this on top of v4.0-rc5 and I get a compile error
> > > because alt_end_marker isn't defined. Which other patches should I take to
> > > test this?
> >
> > It needs tip/master.
> >
>
> So I've had a look at tip/master and I don't _think_ commit
>
> 4332195 ("x86/alternatives: Add instruction padding")
>
> is correct.
>
> [...]
>
> we can use something like this even more horrible line:
Derp! Already spotted a couple of errors below..
>
> .skip -(((145f - 144f) - ((-(((144f - 143f) - (141b - 140b)) > 0) * (144f - 143f)) +
> (-(((144f - 143f) - (141b - 140b)) <= 0) * (141b - 143b)))) > 0) *
^ 140b
> ((145f - 144f) - ((-(((144f - 143f) - (141b - 140b)) > 0) * (144f - 143f)) +
> (-(((144f - 143f) - (141b - 140b)) <= 0) * (141b - 143b))))
^ 140b
>
> This is obviously completely un-tested and not even compiled! :)
>
Told you!
Quentin
next prev parent reply other threads:[~2015-04-03 14:12 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-02 13:11 [PATCH] x86/xsave: Robustify and merge macros Borislav Petkov
2015-04-02 15:52 ` Quentin Casasnovas
2015-04-02 16:12 ` Borislav Petkov
2015-04-02 16:33 ` Quentin Casasnovas
2015-04-02 16:45 ` Borislav Petkov
2015-04-03 14:06 ` Quentin Casasnovas
2015-04-03 14:14 ` Quentin Casasnovas [this message]
2015-04-03 15:23 ` Borislav Petkov
2015-04-03 15:40 ` Quentin Casasnovas
2015-04-03 17:06 ` Borislav Petkov
2015-04-03 17:33 ` Quentin Casasnovas
2015-04-03 17:48 ` Borislav Petkov
2015-04-03 20:42 ` Quentin Casasnovas
2015-04-04 7:34 ` Borislav Petkov
2015-04-04 8:36 ` Quentin Casasnovas
2015-04-04 9:25 ` Borislav Petkov
2015-04-04 10:11 ` Quentin Casasnovas
2015-04-04 10:29 ` Borislav Petkov
2015-04-04 13:32 ` Borislav Petkov
2015-04-04 13:34 ` [PATCH] x86/alternatives: Fix ALTERNATIVE_2 padding generation properly Borislav Petkov
2015-04-07 9:27 ` Quentin Casasnovas
2015-04-07 9:40 ` [tip:x86/asm] " tip-bot for Borislav Petkov
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