From: "Daniel P. Berrangé" <berrange@redhat.com>
To: Joelle van Dyne <j@getutm.app>
Cc: Kevin Wolf <kwolf@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>,
Peter Maydell <peter.maydell@linaro.org>
Subject: Re: [PATCH] coroutine: add libucontext as external library
Date: Tue, 9 Mar 2021 09:35:45 +0000 [thread overview]
Message-ID: <YEdBce6TWCVpSph9@redhat.com> (raw)
In-Reply-To: <20210309032637.41778-1-j@getutm.app>
On Mon, Mar 08, 2021 at 07:26:36PM -0800, Joelle van Dyne wrote:
> iOS does not support ucontext natively for aarch64 and the sigaltstack is
> also unsupported (even worse, it fails silently, see:
> https://openradar.appspot.com/13002712 )
>
> As a workaround we include a library implementation of ucontext and add it
> as a build option.
The README here:
https://github.com/kaniini/libucontext
indicates that it is intentionally limiting what registers it saves
and restores, explicitly excluding FPU.
Peter & Paolo expressed concern about this, indicating FPU reg support
was a requirement for QEMU:
https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05525.html
Regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
next prev parent reply other threads:[~2021-03-09 9:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 3:26 [PATCH] coroutine: add libucontext as external library Joelle van Dyne
2021-03-09 9:35 ` Daniel P. Berrangé [this message]
2021-03-09 9:59 ` Joelle van Dyne
2021-03-09 10:20 ` Peter Maydell
2021-03-09 10:32 ` Daniel P. Berrangé
2021-03-09 10:24 ` Paolo Bonzini
2021-03-09 10:29 ` Daniel P. Berrangé
2021-03-09 10:42 ` Marc-André Lureau
2021-03-09 10:48 ` Paolo Bonzini
2021-03-09 15:38 ` Stefan Hajnoczi
2021-03-09 18:24 ` Joelle van Dyne
2021-03-09 21:21 ` Joelle van Dyne
2021-03-10 9:29 ` Daniel P. Berrangé
2021-03-10 16:32 ` Joelle van Dyne
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=YEdBce6TWCVpSph9@redhat.com \
--to=berrange@redhat.com \
--cc=j@getutm.app \
--cc=kwolf@redhat.com \
--cc=pbonzini@redhat.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@redhat.com \
/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).