From: Stefan Hajnoczi <stefanha@redhat.com>
To: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: fweimer@redhat.com, Kevin Wolf <kwolf@redhat.com>,
thuth@redhat.com, qemu-block@nongnu.org, qemu-devel@nongnu.org,
Fam Zheng <fam@euphon.net>,
sguelton@redhat.com
Subject: Re: [RFC 1/2] tls: add macros for coroutine-safe TLS variables
Date: Tue, 26 Oct 2021 14:41:23 +0100 [thread overview]
Message-ID: <YXgFg0aHtvXNorUS@stefanha-x1.localdomain> (raw)
In-Reply-To: <YXa7zMZG2saNHInI@redhat.com>
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Actually, nevermind what I said about the callback scenario. I don't
think that is a problem because the compiler cannot assume the __thread
variable remains unchanged across the callback. Therefore it cannot
safely cache the value.
So I think only the header file scenario is a problem.
Stefan
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next prev parent reply other threads:[~2021-10-26 13:43 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-25 14:07 [RFC 0/2] tls: add macros for coroutine-safe TLS variables Stefan Hajnoczi
2021-10-25 14:07 ` [RFC 1/2] " Stefan Hajnoczi
2021-10-25 14:14 ` Daniel P. Berrangé
2021-10-26 13:36 ` Stefan Hajnoczi
2021-10-26 13:41 ` Stefan Hajnoczi [this message]
2021-10-26 14:10 ` Kevin Wolf
2021-10-26 16:26 ` Stefan Hajnoczi
2021-10-25 17:19 ` Richard Henderson
2021-10-26 13:30 ` Stefan Hajnoczi
2021-10-26 15:32 ` Richard Henderson
2021-10-26 16:27 ` Stefan Hajnoczi
2021-10-25 14:07 ` [RFC 2/2] util/async: replace __thread with QEMU TLS macros Stefan Hajnoczi
2021-10-25 14:20 ` [RFC 0/2] tls: add macros for coroutine-safe TLS variables Philippe Mathieu-Daudé
2021-10-25 16:16 ` Richard Henderson
2021-10-25 23:27 ` Warner Losh
2021-10-26 13:22 ` Stefan Hajnoczi
2021-10-26 15:10 ` Richard Henderson
2021-10-26 16:34 ` Stefan Hajnoczi
2021-10-26 17:10 ` Richard Henderson
2021-10-26 17:26 ` Thomas Huth
2021-10-26 18:03 ` Richard Henderson
2021-10-27 10:38 ` Kevin Wolf
2021-10-27 12:34 ` Stefan Hajnoczi
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