[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-3.2-testing] PV-on-HVM: unmask_evtchn() must always use hypercall.
# HG changeset patch # User Keir Fraser <keir.fraser@xxxxxxxxxx> # Date 1219308788 -3600 # Node ID b74fe3ba4ce17a1a429973af06e8b68875b3bfa8 # Parent 87ede74351937470e25703e1fb663cd069cc5e4a PV-on-HVM: unmask_evtchn() must always use hypercall. Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx> xen-unstable changeset: 18354:1ea9dd2c7331a7ac22e0debc749316840ce5fdca xen-unstable date: Thu Aug 21 09:51:46 2008 +0100 --- unmodified_drivers/linux-2.6/platform-pci/evtchn.c | 41 +-------------------- 1 files changed, 2 insertions(+), 39 deletions(-) diff -r 87ede7435193 -r b74fe3ba4ce1 unmodified_drivers/linux-2.6/platform-pci/evtchn.c --- a/unmodified_drivers/linux-2.6/platform-pci/evtchn.c Wed Aug 20 09:08:30 2008 +0100 +++ b/unmodified_drivers/linux-2.6/platform-pci/evtchn.c Thu Aug 21 09:53:08 2008 +0100 @@ -107,39 +107,8 @@ EXPORT_SYMBOL(mask_evtchn); void unmask_evtchn(int port) { - unsigned int cpu; - shared_info_t *s = shared_info_area; - vcpu_info_t *vcpu_info; - - cpu = get_cpu(); - vcpu_info = &s->vcpu_info[cpu]; - - /* Slow path (hypercall) if this is a non-local port. We only - ever bind event channels to vcpu 0 in HVM guests. */ - if (unlikely(cpu != 0)) { - evtchn_unmask_t op = { .port = port }; - VOID(HYPERVISOR_event_channel_op(EVTCHNOP_unmask, - &op)); - put_cpu(); - return; - } - - synch_clear_bit(port, &s->evtchn_mask[0]); - - /* - * The following is basically the equivalent of - * 'hw_resend_irq'. Just like a real IO-APIC we 'lose the - * interrupt edge' if the channel is masked. - */ - if (synch_test_bit(port, &s->evtchn_pending[0]) && - !synch_test_and_set_bit(port / BITS_PER_LONG, - &vcpu_info->evtchn_pending_sel)) { - vcpu_info->evtchn_upcall_pending = 1; - if (!vcpu_info->evtchn_upcall_mask) - force_evtchn_callback(); - } - - put_cpu(); + evtchn_unmask_t op = { .port = port }; + VOID(HYPERVISOR_event_channel_op(EVTCHNOP_unmask, &op)); } EXPORT_SYMBOL(unmask_evtchn); @@ -309,12 +278,6 @@ static irqreturn_t evtchn_interrupt(int return IRQ_HANDLED; } -void force_evtchn_callback(void) -{ - VOID(HYPERVISOR_xen_version(0, NULL)); -} -EXPORT_SYMBOL(force_evtchn_callback); - void irq_resume(void) { int evtchn, irq; _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |