From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takayoshi Kochi Date: Thu, 24 Apr 2003 11:56:46 +0000 Subject: Re: [Linux-ia64] [PATCH] fix timer interrupts getting lost Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Thanks Alex! This patch fixed the problem I reported before. And I could observe some "oops jumped a timer." messages (with debug flag enabled). > This patch fixes the issue of some CPUs not showing timer interrupts > going off. Seems during the process of sync'ing the itc, we jumped over > the next timer value. This patch is against 2.5.67 + ia64. I haven't > seen the problem on 2.4, but a quick looks seems like it's potentially > an issue there too. Thanks, >> Hi, >> >> Thanks to Alex's fixes for PCI segment support, we could >> boot 2.5.67 kernel on Tiger. But a strange thing is happening. >> Only cpu0 & 1 are getting timer interrupts and cpu 2 & 3 aren't. >> This problem is reproducible and we see this phenomenon after every >> boot. It seems that these cpus stop receiving timer >> interrupts after a very short while. >> Has anyone seen this? Thanks, --- Takayoshi Kochi