From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vasily Averin Subject: Re: [Q] ide cdrom in native mode leads to irq storm? Date: Fri, 27 Oct 2006 17:17:34 +0400 Message-ID: <454206EE.9080206@sw.ru> References: <453DC2A9.8000507@sw.ru> <453DC65C.8000408@sw.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=KOI8-R Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <453DC65C.8000408@sw.ru> Sender: linux-kernel-owner@vger.kernel.org To: Jens Axboe , linux-kernel@vger.kernel.org, Jeff Garzik , Bartlomiej Zolnierkiewicz , linux-ide@vger.kernel.org Cc: devel@openvz.org List-Id: linux-ide@vger.kernel.org Vasily Averin wrote: > Vasily Averin wrote: >> there is node with Intel 7520-based motherboard (MSI-9136), IDE cdrom (hda) and >> SATA disc and 2.6.19-rc3 linux kernel. >> >> When I set IDE controller into the native mode, I get irq storm on the node and >> this interrupt is disabled. If this interrupt is shared, the other subsystems >> are stop working too. >> >> When I switch the IDE controller into legacy mode, all works correctly. I have reproduced the same issue on the another node: ASUSTeK P5GD1-VM, Intel 915G chipset, ICH6 IDE controller, IDE dvdrom: SONY DVD-ROM DDU1615 (hda), sata disk: WDC WD1600JS-00M when I switch IDE controller to the native mode, I see "Disabling IRQ" message, then kernel generates an oops in create_empty_buffers(), like I've reported earlier. Could somebody please help me to troubleshoot this issue? I've seen this issue on the customer nodes and would like to know how I can work-around this issue without any changes inside motherboard BIOS. thank you, Vasily Averin