[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2 of 4] xen: introduce PHYSDEVOP_get_nr_pirqs
Useful why? What if we'd like nr_pirqs to be per-domain dynamic in future? -- Keir On 30/08/2010 12:25, "Stefano Stabellini" <Stefano.Stabellini@xxxxxxxxxxxxx> wrote: > Introduce a new physdevop called PHYSDEVOP_get_nr_pirqs that allows PV > and PV on HVM guests to get the number of pirqs available. > > Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> > > diff -r f2dc396b92aa xen/arch/x86/hvm/hvm.c > --- a/xen/arch/x86/hvm/hvm.c Wed Aug 18 14:14:23 2010 +0100 > +++ b/xen/arch/x86/hvm/hvm.c Fri Aug 20 14:49:52 2010 +0100 > @@ -2290,6 +2290,7 @@ static long hvm_physdev_op(int cmd, XEN_ > case PHYSDEVOP_unmap_pirq: > case PHYSDEVOP_eoi: > case PHYSDEVOP_irq_status_query: > + case PHYSDEVOP_get_nr_pirqs: > return do_physdev_op(cmd, arg); > default: > return -ENOSYS; > @@ -2393,6 +2394,8 @@ static long hvm_physdev_op_compat32( > case PHYSDEVOP_eoi: > case PHYSDEVOP_irq_status_query: > return compat_physdev_op(cmd, arg); > + case PHYSDEVOP_get_nr_pirqs: > + return do_physdev_op(cmd, arg); > break; > default: > return -ENOSYS; > diff -r f2dc396b92aa xen/arch/x86/physdev.c > --- a/xen/arch/x86/physdev.c Wed Aug 18 14:14:23 2010 +0100 > +++ b/xen/arch/x86/physdev.c Fri Aug 20 14:49:52 2010 +0100 > @@ -572,6 +572,12 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_H > setup_gsi.polarity); > break; > } > + case PHYSDEVOP_get_nr_pirqs: { > + struct physdev_nr_pirqs out; > + out.nr_pirqs = v->domain->nr_pirqs; > + ret = copy_to_guest(arg, &out, 1) ? -EFAULT : 0; > + break; > + } > default: > ret = -ENOSYS; > break; > diff -r f2dc396b92aa xen/include/public/physdev.h > --- a/xen/include/public/physdev.h Wed Aug 18 14:14:23 2010 +0100 > +++ b/xen/include/public/physdev.h Fri Aug 20 14:49:52 2010 +0100 > @@ -240,6 +240,15 @@ struct physdev_setup_gsi { > typedef struct physdev_setup_gsi physdev_setup_gsi_t; > DEFINE_XEN_GUEST_HANDLE(physdev_setup_gsi_t); > > +#define PHYSDEVOP_get_nr_pirqs 22 > +struct physdev_nr_pirqs { > + /* OUT */ > + uint32_t nr_pirqs; > +}; > + > +typedef struct physdev_nr_pirqs physdev_nr_pirqs_t; > +DEFINE_XEN_GUEST_HANDLE(physdev_nr_pirqs_t); > + > /* > * Notify that some PIRQ-bound event channels have been unmasked. > * ** This command is obsolete since interface version 0x00030202 and is ** > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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