qemu/target-s390x
Peter Xu 38d87493f3 kvm-irqchip: i386: add hook for add/remove virq
Adding two hooks to be notified when adding/removing msi routes. There
are two kinds of MSI routes:

- in kvm_irqchip_add_irq_route(): before assigning IRQFD. Used by
  vhost, vfio, etc.

- in kvm_irqchip_send_msi(): when sending direct MSI message, if
  direct MSI not allowed, we will first create one MSI route entry
  in the kernel, then trigger it.

This patch only hooks the first one (irqfd case). We do not need to
take care for the 2nd one, since it's only used by QEMU userspace
(kvm-apic) and the messages will always do in-time translation when
triggered. While we need to note them down for the 1st one, so that we
can notify the kernel when cache invalidation happens.

Also, we do not hook IOAPIC msi routes (we have explicit notifier for
IOAPIC to keep its cache updated). We only need to care about irqfd
users.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-07-21 20:44:19 +03:00
..
Makefile.objs s390x/mmu: Move mmu_translate() and friends to separate file 2015-02-18 09:36:38 +01:00
arch_dump.c s390: Clean up includes 2016-01-29 15:07:22 +00:00
cc_helper.c cpu: move exec-all.h inclusion out of cpu.h 2016-05-19 16:42:29 +02:00
cpu-qom.h target-s390x: make cpu-qom.h not target specific 2016-05-19 16:41:34 +02:00
cpu.c cpu: move exec-all.h inclusion out of cpu.h 2016-05-19 16:42:29 +02:00
cpu.h target-*: Clean up cpu.h header guards 2016-07-12 16:19:16 +02:00
fpu_helper.c softfloat: Implement run-time-configurable meaning of signaling NaN bit 2016-06-24 13:40:37 +01:00
gdbstub.c cpu: move exec-all.h inclusion out of cpu.h 2016-05-19 16:42:29 +02:00
helper.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00
helper.h softfloat: Implement run-time-configurable meaning of signaling NaN bit 2016-06-24 13:40:37 +01:00
insn-data.def target-s390x: wire up I/O instructions in TCG mode 2015-06-17 12:40:50 +02:00
insn-format.def target-s390: Add format based disassassmbly infrastructure 2013-01-05 12:00:27 -08:00
int_helper.c cpu: move exec-all.h inclusion out of cpu.h 2016-05-19 16:42:29 +02:00
interrupt.c s390x: reorganize CSS bits between cpu.h and other headers 2016-05-19 16:42:28 +02:00
ioinst.c s390x: reorganize CSS bits between cpu.h and other headers 2016-05-19 16:42:28 +02:00
kvm.c kvm-irqchip: i386: add hook for add/remove virq 2016-07-21 20:44:19 +03:00
machine.c s390x: move .needed functions for subsections to machine.c 2016-05-19 13:07:34 +02:00
mem_helper.c Fix confusing argument names in some common functions 2016-07-12 13:06:08 +01:00
misc_helper.c cpu: move exec-all.h inclusion out of cpu.h 2016-05-19 16:42:29 +02:00
mmu_helper.c s390x: fix debug statement in trigger_page_fault() 2016-03-01 12:15:28 +01:00
trace-events trace: split out trace events for target-s390x/ directory 2016-06-20 17:22:17 +01:00
translate.c softfloat: Implement run-time-configurable meaning of signaling NaN bit 2016-06-24 13:40:37 +01:00