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Re: [Qemu-devel] [bug] testandset and cpu_interrupt

From: Richard Zidlicky
Subject: Re: [Qemu-devel] [bug] testandset and cpu_interrupt
Date: Wed, 2 Jun 2004 15:47:21 +0200
User-agent: Mutt/1.4i

On Tue, Jun 01, 2004 at 03:30:50PM -0700, Piotr Krysik wrote:
> Hello,
> Function testandset is referenced by cpu_interrupt, 
> spin_lock and spin_trylock (spin_lock and spin_trylock
> for CONFIG_USER_ONLY). All these invocations assume 
> that testandset should return zero when lock is 
> successfully acquired.
> I noticed that implementation of testandset for x86 
> does opposite, i.e. returns NON-zero when lock is 
> successfully acquired.

seems like m68k does the same.


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