From: Alan <alan@lxorguk.ukuu.org.uk>
To: "Wink Saville" <wink@saville.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC] Asynchronous Messaging
Date: Mon, 22 Jan 2007 14:44:33 +0000 [thread overview]
Message-ID: <20070122144433.68598359@localhost.localdomain> (raw)
In-Reply-To: <d4cf37a60701220019h7cae91f6nc33bd24761a54c67@mail.gmail.com>
> This is accomplished by allocating a page (or more) of memory which
> is executable and mapped into every threads address space. Also, all
> ISR entry points are modified to detect if the code that was interrupted
> was executing within the ACE page. If it was then the ACE code is
> allowed to complete before the ISR continues. This then provides
> the guarantee of atomic execution.
What if you enter the ISR, pass the point of the check and then another
CPU core hits the ACE space ?
Also how do you handle the case where the code gets stuck in your atomic
pages ?
Alan
next prev parent reply other threads:[~2007-01-22 14:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-22 8:19 Wink Saville
2007-01-22 14:44 ` Alan [this message]
2007-01-22 15:57 ` Wink Saville
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=20070122144433.68598359@localhost.localdomain \
--to=alan@lxorguk.ukuu.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=wink@saville.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
all inboxes | Powered by JetHome®