linux-kernel - Re: [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver

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]

Date:	Fri, 18 May 2007 13:39:29 +0800
From:	Dave Liu <r63238@...escale.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Segher Boessenkool <segher@...nel.crashing.org>,
	linuxppc-dev@...abs.org, tglx@...utronix.de, mingo@...e.hu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver

> > Yes, on some implementations there can be other conditions that
> > make a decrementer exception go away; there is no contradiction
> > here (thankfully).  My wording was sloppy.
> 
> Some CPUs have the DEC exceptions basically edge triggered (yeah I know

for example?

> it sucks). That's why, among others, the IRQ soft-disable code has code
> to re-trigger DEC exceptions ASAP (by setting it to 1.. note that we
> could probably use 0 here, we've been a bit conservative).


-
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/