From: Richard Henderson <rth@twiddle.net>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "Jia Liu" <proljc@gmail.com>,
patches@linaro.org, "Riku Voipio" <riku.voipio@iki.fi>,
"Alexander Graf" <agraf@suse.de>,
qemu-devel@nongnu.org, "Blue Swirl" <blauwirbel@gmail.com>,
"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
"Guan Xuetao" <gxt@mprc.pku.edu.cn>,
"Andreas Färber" <afaerber@suse.de>,
"Aurelien Jarno" <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCH] linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-user
Date: Tue, 25 Jun 2013 06:56:10 -0700 [thread overview]
Message-ID: <51C9A17A.2030706@twiddle.net> (raw)
In-Reply-To: <1372156544-31712-1-git-send-email-peter.maydell@linaro.org>
On 06/25/2013 03:35 AM, Peter Maydell wrote:
> (and maybe even actually get all targets
> up to having NPTL enabled, since it's mostly just implementing
> the two functions being moved here for x86, sparc, openrisc.
There's far more to it than that for x86. You've got to add
support for all of the locked arithmetic instructions.
We currently have several hacks for atomic operations in
linux-user, usually involving some escape into the cpu loop that
pauses the other threads. This as opposed to assuming some
atomic support on behalf of the host...
It's a mess.
r~
next prev parent reply other threads:[~2013-06-25 13:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-25 10:35 [Qemu-devel] [PATCH] linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-user Peter Maydell
2013-06-25 11:49 ` Andreas Färber
2013-06-27 18:33 ` Peter Maydell
2013-06-25 11:55 ` Edgar E. Iglesias
2013-06-25 12:04 ` Peter Maydell
2013-06-25 13:56 ` Richard Henderson [this message]
2013-06-25 14:07 ` Peter Maydell
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=51C9A17A.2030706@twiddle.net \
--to=rth@twiddle.net \
--cc=afaerber@suse.de \
--cc=agraf@suse.de \
--cc=aurelien@aurel32.net \
--cc=blauwirbel@gmail.com \
--cc=edgar.iglesias@gmail.com \
--cc=gxt@mprc.pku.edu.cn \
--cc=patches@linaro.org \
--cc=peter.maydell@linaro.org \
--cc=proljc@gmail.com \
--cc=qemu-devel@nongnu.org \
--cc=riku.voipio@iki.fi \
/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.