From mboxrd@z Thu Jan 1 00:00:00 1970 From: William Lee Irwin III Date: Tue, 15 Feb 2005 20:01:12 +0000 Subject: Re: FPU context switching fix for SMP Message-Id: <20050215200112.GZ13009@holomorphy.com> List-Id: References: <41f753cabb795@wp.pl> In-Reply-To: <41f753cabb795@wp.pl> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: sparclinux@vger.kernel.org On Tue, Feb 15, 2005 at 09:40:57AM -0800, David S. Miller wrote: > I've modified your patch to only do this in the SMP case. > Here is how the two mechanisms work: [...] > The SMP case works in that each thread, when scheduled(), has > it's PSR_EF flag cleared. > This fork() bug takes away that invariant, which is why the > problems arose. > Thanks a lot Krzysztof. Looks like you got this one wrapped up before I figured out what was going on. Thanks. -- wli