Alex Williamson c87759ce87 q35: Revert to kernel irqchip ... Commit b2fc91db84 ("q35: set split kernel irqchip as default") changed the default for the pc-q35-4.0 machine type to use split irqchip, which turned out to have disasterous effects on vfio-pci INTx support. KVM resampling irqfds are registered for handling these interrupts, but these are non-functional in split irqchip mode. We can't simply test for split irqchip in QEMU as userspace handling of this interrupt is a significant performance regression versus KVM handling (GeForce GPUs assigned to Windows VMs are non-functional without forcing MSI mode or re-enabling kernel irqchip). The resolution is to revert the change in default irqchip mode in the pc-q35-4.1 machine and create a pc-q35-4.0.1 machine for the 4.0-stable branch. The qemu-q35-4.0 machine type should not be used in vfio-pci configurations for devices requiring legacy INTx support without explicitly modifying the VM configuration to use kernel irqchip. Link: https://bugs.launchpad.net/qemu/+bug/1826422 Fixes: b2fc91db84 ("q35: set split kernel irqchip as default") Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <155786484688.13873.6037015630912983760.stgit@gimli.home> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2019-06-03 14:03:03 +02:00
..
bus.c
empty_slot.c	core/empty_slot: Convert sysbus init function to realize function	2018-12-13 13:47:57 +00:00
fw-path-provider.c
generic-loader.c
hotplug.c	call HotplugHandler->plug() as the last step in device realization	2018-10-19 13:44:12 +02:00
irq.c
Kconfig
loader-fit.c	loader-fit: Wean off error_printf()	2019-04-17 21:21:49 +02:00
loader.c
machine.c	q35: Revert to kernel irqchip	2019-06-03 14:03:03 +02:00
Makefile.objs
nmi.c	nmi: remove x86 specific nmi handling	2016-05-23 16:53:46 +02:00
null-machine.c	hw/core: Move null-machine into the common-obj list	2018-10-24 07:27:25 +01:00
or-irq.c
platform-bus.c	hw: Do not include "exec/address-spaces.h" if it is not necessary	2018-06-01 14:15:10 +02:00
ptimer.c
qdev-fw.c
qdev-properties-system.c
qdev-properties.c
qdev.c
register.c
reset.c
split-irq.c	hw/core/split-irq: Device that splits IRQ lines	2018-03-02 11:03:45 +00:00
stream.c
sysbus.c	sysbus: add a sysbus_mmio_unmap() helper	2019-05-29 11:39:46 +10:00
uboot_image.h