search for: irqf_no_suspend

Iirc I derived this from a prior commit from either Ian or Jeremy. Didn''t really check it out, so there''s very likely a more correct fix than what''s attached here. /local/exp/dns/scratch/xenbits/xen-unstable.hg/linux-2.6-pvops.git/arch/x86/xen/time.c: In function ''xen_setup_timer'':

...kernel/irq/pm.c | 48 +++++++++++++++++++++++++++++++++++++++------- 3 files changed, 45 insertions(+), 8 deletions(-) --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -1021,7 +1021,7 @@ int bind_ipi_to_irqhandler(enum ipi_vect if (irq < 0) return irq; - irqflags |= IRQF_NO_SUSPEND | IRQF_FORCE_RESUME; + irqflags |= IRQF_NO_SUSPEND | IRQF_FORCE_RESUME | IRQF_EARLY_RESUME; retval = request_irq(irq, handler, irqflags, devname, dev_id); if (retval != 0) { unbind_from_irq(irq); --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -59,6 +59,8 @@ * IRQF_NO_SU...

...ix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- drivers/xen/events.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -535,6 +535,7 @@ int bind_ipi_to_irqhandler(enum ipi_vect if (irq < 0) return irq; + irqflags |= IRQF_NO_SUSPEND; retval = request_irq(irq, handler, irqflags, devname, dev_id); if (retval != 0) { unbind_from_irq(irq); _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

irq: Exclude percpu IRQs from being fixed up Xen spin unlock uses spurious ipi "lock_kicker_irq" to wake up blocked vCPUs waiting on that lock. This irq should always be disabled. However, when Dom0 is shuting down, function fixup_irqs is called which unmasks all irqs. Function unmask_irq effectively re-enables lock_kicker_irq and its irq handler is invoked which reports bug and crashes