From: Manfred Spraul <manfred@colorfullife.com>
To: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: George Anzinger <george@mvista.com>,
Lee Revell <rlrevell@joe-job.com>,
dipankar@in.ibm.com, ganzinger@mvista.com,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: RCU question
Date: Sun, 12 Dec 2004 09:59:00 +0100 [thread overview]
Message-ID: <41BC0854.4010503@colorfullife.com> (raw)
In-Reply-To: <Pine.LNX.4.61.0412111947280.7847@montezuma.fsmlabs.com>
Zwane Mwaikambo wrote:
>"Intel processors don't suppress SMI or NMI after an STI instruction.
>Since the INTR suppresion is not preserved across an SMI or NMI handler,
>this may result in an INTR being serviced after the STI, which constitutes
>a violation of the INTR suppresion.
>
>
Interesting find.
It means that our NMI irq return path should check if it points to a hlt
instruction and if yes, then increase the saved EIP by one before doing
the iretd, right?
--
Manfred
next prev parent reply other threads:[~2004-12-12 8:59 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-09 23:59 RCU question George Anzinger
2004-12-10 4:31 ` Dipankar Sarma
2004-12-10 19:42 ` George Anzinger
2004-12-10 20:40 ` Dipankar Sarma
2004-12-10 20:45 ` Lee Revell
2004-12-10 21:02 ` George Anzinger
2004-12-10 22:58 ` Zwane Mwaikambo
2004-12-11 2:22 ` George Anzinger
2004-12-11 2:45 ` Zwane Mwaikambo
2004-12-11 3:29 ` George Anzinger
2004-12-11 14:52 ` Zwane Mwaikambo
2004-12-11 16:32 ` Manfred Spraul
2004-12-11 16:52 ` George Anzinger
2004-12-12 2:53 ` Zwane Mwaikambo
2004-12-12 8:59 ` Manfred Spraul [this message]
2004-12-12 9:37 ` Andrea Arcangeli
2004-12-12 10:22 ` Manfred Spraul
2004-12-12 12:15 ` Andrea Arcangeli
2004-12-14 21:40 ` Lee Revell
2004-12-14 22:23 ` [patch, 2.6.10-rc3] safe_hlt() & NMIs Ingo Molnar
2004-12-14 22:47 ` Ingo Molnar
2004-12-14 23:09 ` Linus Torvalds
2004-12-15 8:52 ` Ingo Molnar
2004-12-15 15:44 ` Linus Torvalds
2004-12-15 16:35 ` Ingo Molnar
2004-12-16 0:37 ` Alan Cox
2004-12-16 1:58 ` Linus Torvalds
2004-12-16 14:51 ` Ingo Molnar
2004-12-16 15:08 ` Maciej W. Rozycki
2004-12-16 15:11 ` Ingo Molnar
2004-12-16 15:42 ` Maciej W. Rozycki
2004-12-16 15:54 ` Linus Torvalds
2004-12-16 2:10 ` Zwane Mwaikambo
2004-12-16 13:26 ` Alan Cox
2004-12-14 23:41 ` Andrea Arcangeli
2004-12-14 23:00 ` Linus Torvalds
2004-12-15 5:04 ` Andi Kleen
2004-12-15 6:27 ` Avi Kivity
2004-12-15 8:51 ` Ingo Molnar
2004-12-12 16:51 ` RCU question George Anzinger
2004-12-12 22:40 ` Manfred Spraul
2004-12-13 5:22 ` George Anzinger
2004-12-12 16:26 ` Zwane Mwaikambo
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=41BC0854.4010503@colorfullife.com \
--to=manfred@colorfullife.com \
--cc=dipankar@in.ibm.com \
--cc=ganzinger@mvista.com \
--cc=george@mvista.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rlrevell@joe-job.com \
--cc=zwane@arm.linux.org.uk \
/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