Gleb Natapov b4a2f5e723 KVM: Avoid redelivery of edge interrupt before next edge ... The check for an edge is broken in current ioapic code. ioapic->irr is cleared on each edge interrupt by ioapic_service() and this makes old_irr != ioapic->irr condition in kvm_ioapic_set_irq() to be always true. The patch fixes the code to properly recognise edge. Some HW emulation calls set_irq() without level change. If each such call is propagated to an OS it may confuse a device driver. This is the case with keyboard device emulation and Windows XP x64 installer on SMP VM. Each keystroke produce two interrupts (down/up) one interrupt is submitted to CPU0 and another to CPU1. This confuses Windows somehow and it ignores keystrokes. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>		2009-08-09 11:45:49 +03:00
..
coalesced_mmio.c
coalesced_mmio.h
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
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
kvm_main.c	KVM: protect concurrent make_all_cpus_request	2009-06-28 14:10:29 +03:00
kvm_trace.c	KVM: Prevent trace call into unloaded module text	2008-12-31 16:55:04 +02:00