From: Kevin Wolf <kwolf@redhat.com>
To: Joerg Roedel <joerg.roedel@amd.com>
Cc: Gleb Natapov <gleb@redhat.com>, kvm@vger.kernel.org
Subject: Re: [RFC PATCH] emulator: Fix task switch into/out of VM86
Date: Mon, 16 Jan 2012 16:37:33 +0100 [thread overview]
Message-ID: <4F14443D.10306@redhat.com> (raw)
In-Reply-To: <20120110175159.GF7166@amd.com>
Am 10.01.2012 18:51, schrieb Joerg Roedel:
> On Tue, Jan 10, 2012 at 01:30:47PM +0200, Gleb Natapov wrote:
>> On Tue, Jan 10, 2012 at 12:25:18PM +0100, Kevin Wolf wrote:
>>> Did that now, and it looks like exit_int_info is always 0 during the
>>> task switch intercept for a task gate in the IDT. So special-casing VM86
>>> won't help, I'm afraid.
>>>
>> Joerg, do you know how can we check that task switch was cause by an
>> exception triggering task gate if exit_int_info is not provided during
>> intercept (short of decoding instruction that caused intercept to see if
>> it's a call to a gate, which is racy) ?
>
> Hmm, havn't found a solution yet. But I will check further and let you
> know if I find out something.
Jörg, any news on this?
Kevin
next prev parent reply other threads:[~2012-01-16 15:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 20:10 [RFC PATCH] emulator: Fix task switch into/out of VM86 Kevin Wolf
2012-01-10 3:08 ` Takuya Yoshikawa
2012-01-10 4:07 ` Takuya Yoshikawa
2012-01-10 9:01 ` Gleb Natapov
2012-01-10 9:28 ` Kevin Wolf
2012-01-10 10:17 ` Gleb Natapov
2012-01-10 11:25 ` Kevin Wolf
2012-01-10 11:30 ` Gleb Natapov
2012-01-10 17:51 ` Joerg Roedel
2012-01-16 15:37 ` Kevin Wolf [this message]
2012-01-16 15:57 ` Joerg Roedel
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=4F14443D.10306@redhat.com \
--to=kwolf@redhat.com \
--cc=gleb@redhat.com \
--cc=joerg.roedel@amd.com \
--cc=kvm@vger.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