From: Sergey Fedorov <serge.fdrv@gmail.com>
To: Richard Henderson <rth@twiddle.net>,
Sergey Fedorov <sergey.fedorov@linaro.org>,
qemu-devel@nongnu.org
Cc: "Alex Bennée" <alex.bennee@linaro.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Peter Crosthwaite" <crosthwaite.peter@gmail.com>
Subject: Re: [Qemu-devel] [PATCH] cpu-exec: Fix direct jump to TB spanning page
Date: Mon, 16 May 2016 17:36:18 +0300 [thread overview]
Message-ID: <5739DAE2.3010802@gmail.com> (raw)
In-Reply-To: <53a44acc-2a09-c321-a649-85e659bbc1e6@twiddle.net>
On 16/05/16 16:49, Richard Henderson wrote:
> On 05/16/2016 06:13 AM, Sergey Fedorov wrote:
>> It is not safe to make a direct jump to a TB spanning two pages in
>> system emulation because the mapping for the second page can get changed
>> but we don't take care of direct jumps in this case.
> We don't? I'm pretty sure that we do...
What we just do is flushing the CPU virtual address cache, see for
tlb_flush() etc.
Kind regards,
Sergey
next prev parent reply other threads:[~2016-05-16 14:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-16 13:13 [Qemu-devel] [PATCH] cpu-exec: Fix direct jump to TB spanning page Sergey Fedorov
2016-05-16 13:49 ` Richard Henderson
2016-05-16 14:36 ` Sergey Fedorov [this message]
2016-05-25 16:37 ` Sergey Fedorov
2016-05-26 12:52 ` Peter Maydell
2016-05-16 14:43 ` Max Filippov
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=5739DAE2.3010802@gmail.com \
--to=serge.fdrv@gmail.com \
--cc=alex.bennee@linaro.org \
--cc=crosthwaite.peter@gmail.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=rth@twiddle.net \
--cc=sergey.fedorov@linaro.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;
as well as URLs for NNTP newsgroup(s).