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Re: [Qemu-devel] [PATCH v2 1/7] s390/kvm: Support for I/O interrupts.
From: |
Cornelia Huck |
Subject: |
Re: [Qemu-devel] [PATCH v2 1/7] s390/kvm: Support for I/O interrupts. |
Date: |
Wed, 5 Sep 2012 10:26:00 +0200 |
On Wed, 05 Sep 2012 10:28:53 +0300
Avi Kivity <address@hidden> wrote:
> On 09/04/2012 06:13 PM, Cornelia Huck wrote:
> > Add support for handling I/O interrupts (standard, subchannel-related
> > ones and rudimentary adapter interrupts).
> >
> > The subchannel-identifying parameters are encoded into the interrupt
> > type.
> >
> > I/O interrupts are floating, so they can't be injected on a specific
> > vcpu.
> >
> > diff --git a/include/linux/kvm.h b/include/linux/kvm.h
> > index d808694..5a36e65 100644
> > --- a/include/linux/kvm.h
> > +++ b/include/linux/kvm.h
> > @@ -396,6 +396,12 @@ struct kvm_s390_psw {
> > #define KVM_S390_INT_SERVICE 0xffff2401u
> > #define KVM_S390_INT_EMERGENCY 0xffff1201u
> > #define KVM_S390_INT_EXTERNAL_CALL 0xffff1202u
> > +#define KVM_S390_INT_IO(ai,cssid,ssid,schid) \
> > + (((schid)) | \
> > + ((ssid) << 16) | \
> > + ((cssid) << 18) | \
> > + ((ai) << 26))
> > +
> >
>
> Documentation?
>
KVM_S390_INTERRUPT is currently completely undocumented... I'll
probably do an extra patch and then have this and the machine check
patch add the new values.
- [Qemu-devel] [RFC PATCH v2 0/7] s390: virtual css host support., Cornelia Huck, 2012/09/04
- [Qemu-devel] [PATCH v2 3/7] s390/kvm: In-kernel handling of I/O instructions., Cornelia Huck, 2012/09/04
- [Qemu-devel] [PATCH v2 4/7] s390: Move css limits from drivers/s390/cio/ to include/asm/., Cornelia Huck, 2012/09/04
- [Qemu-devel] [PATCH v2 1/7] s390/kvm: Support for I/O interrupts., Cornelia Huck, 2012/09/04
- [Qemu-devel] [PATCH v2 5/7] s390: Make some css-related structures usable by non-cio code., Cornelia Huck, 2012/09/04
- [Qemu-devel] [PATCH v2 6/7] s390/kvm: Base infrastructure for enabling capabilities., Cornelia Huck, 2012/09/04
- [Qemu-devel] [PATCH v2 7/7] s390/kvm: In-kernel channel subsystem support., Cornelia Huck, 2012/09/04
- [Qemu-devel] [PATCH v2 2/7] s390/kvm: Add support for machine checks., Cornelia Huck, 2012/09/04
- Re: [Qemu-devel] [RFC PATCH v2 0/7] s390: virtual css host support., Avi Kivity, 2012/09/05