> -----Original Message-----
> From: Hodaszi, Robert <Robert.Hodaszi@xxxxxxxx>
> Sent: Friday, June 21, 2019 8:47 PM
> To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Michael Shych <michaelsh@xxxxxxxxxxxx>; x86@xxxxxxxxxx; Vadim
> Pasternak <vadimp@xxxxxxxxxxxx>; Ido Schimmel
> <idosch@xxxxxxxxxxxx>; Greg Kroah-Hartman
> <gregkh@xxxxxxxxxxxxxxxxxxx>; linux-serial@xxxxxxxxxxxxxxx
> Subject: RE: "No irq handler for vector" problem
>
>
> On June 21, 2019 19:00:25 Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> > On Fri, 21 Jun 2019, Hodaszi, Robert wrote:
> >>
> >>
> >> Also, it seems, if I'm running the serial port opening-closing process
> >> on the same core as the interrupt is assigned to, I'm not getting the
> >> error message. If I'm running it on a different core, most of the time,
> >> I'm getting the error message.
> >
> > ...
> >
> >> Unfortunately, I'm stuck at this point a bit. Don't really know, what
> >> would be the proper solution (how could I avoid free'ing up a pending
> >> IRQ's vector), also I'm not knowing the x86 part of the kernel very well
> >> yet.
> >
> > Not freeing the vector would just paper over the problem. Can you try the
> > patch below?
> >
> > Thanks,
> >
> > tglx
> >
> > 8<------------------
> > diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
> > index 53aa234a6803..189db40b0524 100644
> > --- a/arch/x86/kernel/apic/io_apic.c
> > +++ b/arch/x86/kernel/apic/io_apic.c
> > @@ -3003,8 +3003,8 @@ void mp_irqdomain_deactivate(struct irq_domain
> *domain,
> > struct irq_data *irq_data)
> > {
> > /* It won't be called for IRQ with multiple IOAPIC pins associated */
> > - ioapic_mask_entry(mp_irqdomain_ioapic_idx(domain),
> > - (int)irq_data->hwirq);
> > + clear_IO_APIC_pin(mp_irqdomain_ioapic_idx(domain),
> > + (unsigned int)irq_data->hwirq);
> > }
> >
> > int mp_irqdomain_ioapic_idx(struct irq_domain *domain)
>
Hi,
Tried patch on our system. The problem still exist:
[ 49.802818] do_IRQ: 0.37 No irq handler for vector
Michael.
> I can try it on Monday. Thanks!
>
> Robert
