From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
X86 ML <x86@kernel.org>, kvm list <kvm@vger.kernel.org>,
Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH 1/3] x86_64,entry: Fix RCX for traced syscalls
Date: Tue, 6 Jan 2015 20:00:41 +0100 [thread overview]
Message-ID: <20150106190041.GG32560@pd.tnic> (raw)
In-Reply-To: <CALCETrXGmDOo-4aT3Zh2UzCHNK_Rkyw=y0sKMVBo=7Vjb9O1BA@mail.gmail.com>
On Tue, Jan 06, 2015 at 10:43:57AM -0800, Andy Lutomirski wrote:
> Sure, but the code would be simpler if we shoved that value in the
> EFLAGS slot.
There probably is some reason for that but it's not like we can change
it :-)
> Hmm. I added and pushed a test for fork, but that didn't turn
> anything up. And I don't see any bugs in the code.
>
> I booted 3.18 plus this patch with context tracking forced on on my
> laptop, and something seems to have gone wrong.
Well, I ran it on -rc2 + tip/master and it did trigger sporadically
yesterday but was unable to trigger something today.
I'll redo the whole games tomorrow.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2015-01-06 19:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-07 23:58 [PATCH 0/3] x86_64,entry: Rearrange the syscall exit optimizations Andy Lutomirski
2014-11-07 23:58 ` [PATCH 1/3] x86_64,entry: Fix RCX for traced syscalls Andy Lutomirski
2015-01-05 12:59 ` Borislav Petkov
2015-01-05 20:31 ` Andy Lutomirski
2015-01-06 15:34 ` Borislav Petkov
2015-01-06 18:43 ` Andy Lutomirski
2015-01-06 19:00 ` Borislav Petkov [this message]
2015-01-07 15:55 ` Borislav Petkov
2014-11-07 23:58 ` [PATCH 2/3] x86_64,entry: Use sysret to return to userspace when possible Andy Lutomirski
2015-01-08 12:29 ` Borislav Petkov
2015-01-08 13:57 ` Borislav Petkov
2015-01-10 21:05 ` Andy Lutomirski
2015-01-09 10:40 ` Borislav Petkov
2014-11-07 23:58 ` [PATCH 3/3] x86_64,entry: Remove the syscall exit audit and schedule optimizations Andy Lutomirski
2015-01-09 15:53 ` Borislav Petkov
2015-01-09 16:08 ` Andy Lutomirski
2014-12-04 1:42 ` [PATCH 0/3] x86_64,entry: Rearrange the syscall exit optimizations Andy Lutomirski
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=20150106190041.GG32560@pd.tnic \
--to=bp@alien8.de \
--cc=fweisbec@gmail.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=oleg@redhat.com \
--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