linux/virt/kvm
Sheng Yang 968a634793 KVM: No disable_irq for MSI/MSI-X interrupt on device assignment
Disable interrupt at interrupt handler and enable it when guest ack is for
the level triggered interrupt, to prevent reinjected interrupt. MSI/MSI-X don't
need it.

One possible problem is multiply same vector interrupt injected between irq
handler and scheduled work handler would be merged as one for MSI/MSI-X.
But AFAIK, the drivers handle it well.

The patch fixed the oplin card performance issue(MSI-X performance is half of
MSI/INTx).

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10 08:32:43 +03:00
..
coalesced_mmio.c KVM: Add coalesced MMIO support (common part) 2008-07-20 12:42:31 +03:00
coalesced_mmio.h KVM: Add coalesced MMIO support (common part) 2008-07-20 12:42:31 +03:00
eventfd.c KVM: irqfd 2009-09-10 08:32:41 +03:00
ioapic.c KVM: Avoid redelivery of edge interrupt before next edge 2009-08-09 11:45:49 +03:00
ioapic.h KVM: APIC: get rid of deliver_bitmask 2009-06-10 11:48:27 +03:00
iodev.h KVM: kvm_io_device: extend in_range() to manage len and write attribute 2008-07-20 12:42:30 +03:00
iommu.c KVM: Enable snooping control for supported hardware 2009-06-10 11:48:50 +03:00
irq_comm.c KVM: fix ack not being delivered when msi present 2009-08-05 14:03:43 +03:00
Kconfig KVM: irqfd 2009-09-10 08:32:41 +03:00
kvm_main.c KVM: No disable_irq for MSI/MSI-X interrupt on device assignment 2009-09-10 08:32:43 +03:00
kvm_trace.c KVM: Prevent trace call into unloaded module text 2008-12-31 16:55:04 +02:00