From: Keir Fraser <keir.xen@gmail.com>
To: Jan Beulich <JBeulich@suse.com>,
xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH] x86: AVX instruction emulation fixes
Date: Wed, 28 Aug 2013 13:49:57 +0100 [thread overview]
Message-ID: <CE43B085.321BE%keir.xen@gmail.com> (raw)
In-Reply-To: <521DD1CD02000078000EF000@nat28.tlf.novell.com>
On 28/08/2013 09:32, "Jan Beulich" <JBeulich@suse.com> wrote:
> - we used the C4/C5 (first prefix) byte instead of the apparent ModR/M
> one as the second prefix byte
> - early decoding normalized vex.reg, thus corrupting it for the main
> consumer (copy_REX_VEX()), resulting in #UD on the two-operand
> instructions we emulate
>
> Also add respective test cases to the testing utility plus
> - fix get_fpu() (the fall-through order was inverted)
> - add cpu_has_avx2, even if it's currently unused (as in the new test
> cases I decided to refrain from using AVX2 instructions in order to
> be able to actually run all the tests on the hardware I have)
> - slightly tweak cpu_has_avx to more consistently express the outputs
> we don't care about (sinking them all into the same variable)
>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
prev parent reply other threads:[~2013-08-28 12:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-28 8:32 [PATCH] x86: AVX instruction emulation fixes Jan Beulich
2013-08-28 8:49 ` Fabio Fantoni
2013-08-28 8:56 ` Andrew Cooper
2013-08-28 12:49 ` Keir Fraser [this message]
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=CE43B085.321BE%keir.xen@gmail.com \
--to=keir.xen@gmail.com \
--cc=JBeulich@suse.com \
--cc=xen-devel@lists.xenproject.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.