From: Andreas Schwab <schwab@suse.de>
To: qemu-devel@nongnu.org
Subject: Generic way to detect qemu linux-user emulation
Date: Tue, 18 Mar 2025 11:18:13 +0100 [thread overview]
Message-ID: <mvm1puuiqvu.fsf@suse.de> (raw)
Is there a generic way for a program to detect that is it being run
inside the linux-user emulation?
The purpose for that would be to work around limitations of the
emulation, like CLONE_VFORK being unsupported. For example, python >=
3.13 needs to avoid using posix_spawn in that case, because the
emulation of CLONE_VFORK as a true fork makes it impossible for it to
report errors back to the parent process.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
next reply other threads:[~2025-03-18 10:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-18 10:18 Andreas Schwab [this message]
2025-03-18 10:36 ` Generic way to detect qemu linux-user emulation Helge Deller
2025-03-18 10:45 ` Helge Deller
2025-03-18 10:53 ` Peter Maydell
2025-03-18 11:58 ` Daniel P. Berrangé
2025-03-18 12:34 ` Andreas Schwab
2025-03-18 12:43 ` Daniel P. Berrangé
2025-03-18 13:06 ` Peter Maydell
2025-03-18 13:54 ` Daniel P. Berrangé
2025-03-18 14:17 ` Andreas Schwab
2025-03-18 17:32 ` Daniel P. Berrangé
2025-03-18 15:04 ` Peter Maydell
2025-03-18 17:08 ` Peter Maydell
2025-03-18 17:18 ` Daniel P. Berrangé
2025-03-18 17:48 ` Peter Maydell
2025-03-18 11:10 ` Andreas Schwab
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=mvm1puuiqvu.fsf@suse.de \
--to=schwab@suse.de \
--cc=qemu-devel@nongnu.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).