From: Paolo Bonzini <pbonzini@redhat.com>
To: Mark Burton <mark.burton@greensocs.com>,
Peter Maydell <peter.maydell@linaro.org>
Cc: mttcg@greensocs.com, "Alexander Graf" <agraf@suse.de>,
"J. Kiszka" <jan.kiszka@siemens.com>,
"QEMU Developers" <qemu-devel@nongnu.org>,
"KONRAD Frédéric" <fred.konrad@greensocs.com>
Subject: Re: [Qemu-devel] [RFC 01/10] target-arm: protect cpu_exclusive_*.
Date: Tue, 03 Mar 2015 16:32:04 +0100 [thread overview]
Message-ID: <54F5D3F4.40705@redhat.com> (raw)
In-Reply-To: <711BBCAD-9514-4523-A456-AD4F397C41CD@greensocs.com>
On 03/03/2015 16:29, Mark Burton wrote:
>
> ps. on our bug - we believe somehow the STREX is being marked as
> failed, but actually succeeds to write something. There are only 3
> ways the strex can fail: 1/ the address doesn't match - in which case
> no ST will be attempted 2/ the value doesn't match - which means - no
> ST attempted 3/ the store starts, but causes a TLB fill/exception…
>
> The 3rd has 2 possibilities - the TLB is filled, and the store goes
> ahead totally normally - there should be no ‘fail’ - or an exception
> is generated in which case we will long jump away and never return.
When do you release the lock?
Paolo
next prev parent reply other threads:[~2015-03-03 15:32 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-16 17:19 [Qemu-devel] [RFC 00/10] MultiThread TCG fred.konrad
2015-01-16 17:19 ` [Qemu-devel] [RFC 01/10] target-arm: protect cpu_exclusive_* fred.konrad
2015-01-27 14:36 ` Alex Bennée
2015-01-29 15:17 ` Peter Maydell
2015-02-02 8:31 ` Frederic Konrad
2015-02-02 8:36 ` Peter Maydell
2015-02-26 18:09 ` Frederic Konrad
2015-02-26 20:36 ` Alexander Graf
2015-02-26 22:56 ` Peter Maydell
2015-02-27 7:54 ` Mark Burton
2015-03-02 12:27 ` Peter Maydell
2015-03-03 15:29 ` Mark Burton
2015-03-03 15:32 ` Paolo Bonzini [this message]
2015-03-03 15:33 ` Mark Burton
2015-03-03 15:34 ` Paolo Bonzini
2015-03-03 15:41 ` Mark Burton
2015-03-03 15:47 ` Dr. David Alan Gilbert
2015-03-13 19:38 ` Richard Henderson
2015-03-13 20:04 ` Dr. David Alan Gilbert
2015-01-16 17:19 ` [Qemu-devel] [RFC 02/10] use a different translation block list for each cpu fred.konrad
2015-01-27 14:45 ` Alex Bennée
2015-01-27 15:16 ` Frederic Konrad
2015-01-29 15:24 ` Peter Maydell
2015-01-29 15:33 ` Mark Burton
2015-02-02 8:39 ` Frederic Konrad
2015-02-02 8:49 ` Peter Maydell
2015-02-03 16:17 ` Richard Henderson
2015-02-03 16:33 ` Paolo Bonzini
2015-01-16 17:19 ` [Qemu-devel] [RFC 03/10] replace spinlock by QemuMutex fred.konrad
2015-01-29 15:25 ` Peter Maydell
2015-02-02 8:45 ` Frederic Konrad
2015-01-16 17:19 ` [Qemu-devel] [RFC 04/10] remove unused spinlock fred.konrad
2015-01-16 17:19 ` [Qemu-devel] [RFC 05/10] extract TBContext from TCGContext fred.konrad
2015-01-29 15:44 ` Peter Maydell
2015-02-03 16:30 ` Richard Henderson
2015-01-16 17:19 ` [Qemu-devel] [RFC 06/10] protect TBContext with tb_lock fred.konrad
2015-01-16 17:19 ` [Qemu-devel] [RFC 07/10] tcg: remove tcg_halt_cond global variable fred.konrad
2015-01-16 17:19 ` [Qemu-devel] [RFC 08/10] Drop global lock during TCG code execution fred.konrad
2015-01-16 17:19 ` [Qemu-devel] [RFC 09/10] cpu: remove exit_request global fred.konrad
2015-01-29 15:52 ` Peter Maydell
2015-02-02 10:03 ` Paolo Bonzini
2015-02-02 13:12 ` Peter Maydell
2015-02-02 13:14 ` Paolo Bonzini
2015-02-03 9:37 ` Frederic Konrad
2015-02-03 10:29 ` Peter Maydell
2015-01-16 17:19 ` [Qemu-devel] [RFC 10/10] tcg: switch on multithread fred.konrad
2015-03-27 10:08 ` [Qemu-devel] [RFC 00/10] MultiThread TCG Alex Bennée
2015-03-27 10:37 ` Frederic Konrad
2015-03-30 6:52 ` Mark Burton
2015-03-30 21:46 ` Peter Maydell
2015-03-31 6:41 ` Mark Burton
2015-04-10 16:03 ` Frederic Konrad
2015-04-22 12:26 ` Frederic Konrad
2015-04-22 13:18 ` Peter Maydell
2015-04-23 7:38 ` Frederic Konrad
2015-04-23 15:44 ` Alex Bennée
2015-04-23 15:46 ` Alex Bennée
2015-04-27 7:37 ` Frederic Konrad
2015-04-27 17:06 ` Emilio G. Cota
2015-04-28 8:17 ` Frederic Konrad
2015-04-28 9:06 ` Paolo Bonzini
2015-04-28 17:49 ` Emilio G. Cota
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=54F5D3F4.40705@redhat.com \
--to=pbonzini@redhat.com \
--cc=agraf@suse.de \
--cc=fred.konrad@greensocs.com \
--cc=jan.kiszka@siemens.com \
--cc=mark.burton@greensocs.com \
--cc=mttcg@greensocs.com \
--cc=peter.maydell@linaro.org \
--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).