Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: regression caused by: genirq: do not leave interupts enabled on free_irq | Date | Fri, 11 Apr 2008 17:19:43 +0200 |
| |
On Friday, 11 of April 2008, Thomas Gleixner wrote: > On Fri, 11 Apr 2008, Eric W. Biederman wrote: > > On Fri, 2008-04-11 at 00:17 -0700, Yinghai Lu wrote: > > > On Fri, Apr 11, 2008 at 12:14 AM, Yinghai Lu <yhlu.kernel@gmail.com> wrote: > > > > On Fri, Apr 11, 2008 at 12:01 AM, Thomas Gleixner <tglx@linutronix.de> wrote: > > > > > On Thu, 10 Apr 2008, Yinghai Lu wrote: > > > > > > last week found: > > > > > > after latest kernel kexec RHEL 5.1 or other stack kernel, the nvidia > > > > > > forcedeth doesn't work anymore. > > > > > > > > > > > > I stared at forcedeth.c two days. and revert every patches about that > > > > > > doesn't help. > > > > > > > > > > So forcedeth does not come up again, when you kexec from linus.git > > > > > into an older distro kernel. Or is it the other way round ? > > > > RHEL 5.1 kexec RHEL 5.1 : works > > > > RHEL 5.1 kexec linus kernel: works > > > > linus (after -rc2) kexec linus tree: works: > > > > linus (after -rc2) kexec RHEL 5.1 : forcedeth will not come up > > > > linus ( before -rc2 include rc2) kexec RHEL 5.1 works > > > > > > > the forcedeth can not get IP address... > > > > Sounds like you are not getting any interrupts when you receive a > > packet. (i.e. The interrupt line is staying disabled). > > > > Is MSI an option here? I'm wondering if we disable the MSI and > > something is not enabling it. > > Hmm, we disable the interrupt on free_irq(), but we reenable it in > request_irq()/setup_irq(), which is called when the forcedeth driver > initializes in the kexeced kernel. So there is some other deeper down > problem lurking. > > Yinghai, can you apply that patch to RHEL 5.1 and check, what happens > if you do: > > modprobe forcedeth > ifup ... > ifdown ... > rmmod forcedeth > modprobe forcedeth > ifup ... > > This should result in the same problem, but probably simpler to debug.
I've just got a report from a forcedeth user that it doesn't work after a resume from RAM for him any more. Can it be related?
Rafael
| |