linux-kernel - Re: [PATCH -rt] ide: fix interrupts processing issue with preempt-able hardirqs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20080625152615.GA18241@polina.dev.rtsoft.ru>
Date:	Wed, 25 Jun 2008 19:26:15 +0400
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Sergei Shtylyov <sshtylyov@...mvista.com>,
	Ingo Molnar <mingo@...e.hu>, linux-ide@...r.kernel.org,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Daniel Walker <dwalker@...sta.com>
Subject: Re: [PATCH -rt] ide: fix interrupts processing issue with
	preempt-able hardirqs

On Wed, Jun 25, 2008 at 03:32:12PM +0100, Alan Cox wrote:
> > Note: I don't have any specifications on that ULi bridge, neither I have
> > any schematics for that board (so far, let's hope). So I can't say
> > exactly how things are inter-connected or what these PCI quirks are
> > actually doing (despite few comments in them).
> 
> So you don't for example know if the bridge is correctly configured for
> that device to be edge or level triggered ?

Nope. But I don't think that I can configure it anyway. The thing is
that this particular setup doesn't use ULi's i8259 PIC (it is disabled by
one of PCI quirks), and IDE interrupt is a sideband PCI-E interrupt (also
configured by the PCI quirk). So IDE interrupt is "directly" connected to
OpenPIC interrupt line (through the SOC PCI-E controller, of course).

If that ULi bridge (M1575) provides some other means of configuring, I
could try it... with the specifications.

-- 
Anton Vorontsov
email: cbouatmailru@...il.com
irc://irc.freenode.net/bd2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/