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qemu/hw/intc
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Cédric Le Goater eab0a2d06e spapr/xive: Allocate vCPU IPIs from the vCPU contexts 
When QEMU switches to the XIVE interrupt mode, it creates all the
guest interrupts at the level of the KVM device. These interrupts are
backed by real HW interrupts from the IPI interrupt pool of the XIVE
controller.

Currently, this is done from the QEMU main thread, which results in
allocating all interrupts from the chip on which QEMU is running. IPIs
are not distributed across the system and the load is not well
balanced across the interrupt controllers.

Change the vCPU IPI allocation to run from the vCPU context. The
associated XIVE IPI interrupt will be allocated on the chip on which
the vCPU is running and improve distribution of the IPIs in the system.
When the vCPUs are pinned, this will make the IPI local to the chip of
the vCPU. It will reduce rerouting between interrupt controllers and
gives better performance.

Device interrupts are still treated the same. To improve placement, we
would need some information on the chip owning the virtual source or
the HW source in case of a passthrough device but this reuires
changes in PAPR.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200820134547.2355743-5-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-09-08 10:08:42 +10:00
..
allwinner-a10-pic.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
apic_common.c apic: Report current_count via 'info lapic' 2020-07-10 19:26:55 -04:00
apic.c apic: Report current_count via 'info lapic' 2020-07-10 19:26:55 -04:00
arm_gic_common.c arm_gic: Mask the un-supported priority bits 2020-02-28 16:14:57 +00:00
arm_gic_kvm.c error: Avoid error_propagate() after migrate_add_blocker() 2020-07-10 15:18:08 +02:00
arm_gic.c arm_gic: Mask the un-supported priority bits 2020-02-28 16:14:57 +00:00
arm_gicv2m.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
arm_gicv3_common.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
arm_gicv3_cpuif.c arm/gicv3: update virtual irq state after IAR register read 2020-01-17 14:27:16 +00:00
arm_gicv3_dist.c hw/intc/arm_gicv3: GICD_TYPER.SecurityExtn is RAZ if GICD_CTLR.DS == 1 2019-06-17 15:13:19 +01:00
arm_gicv3_its_common.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
arm_gicv3_its_kvm.c error: Avoid error_propagate() after migrate_add_blocker() 2020-07-10 15:18:08 +02:00
arm_gicv3_kvm.c error: Avoid error_propagate() after migrate_add_blocker() 2020-07-10 15:18:08 +02:00
arm_gicv3_redist.c hw/intc/arm_gicv3: Fix decoding of ID register range 2019-06-17 15:13:19 +01:00
arm_gicv3.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
armv7m_nvic.c hw: Remove superfluous breaks 2020-09-01 08:38:00 +02:00
aspeed_vic.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
bcm2835_ic.c hw/arm/bcm283x: Correct the license text 2020-03-23 17:22:30 +00:00
bcm2836_control.c hw/arm/bcm283x: Correct the license text 2020-03-23 17:22:30 +00:00
etraxfs_pic.c cris: improve passing PIC interrupt vector to the CPU 2020-01-07 17:24:29 +04:00
exynos4210_combiner.c hw/intc: fix default registers value in exynos4210_combiner_read() 2020-09-01 12:05:21 +02:00
exynos4210_gic.c sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
gic_internal.h hw/intc/arm_gic: Drop GIC_BASE_IRQ macro 2018-09-25 15:13:24 +01:00
gicv3_internal.h
grlib_irqmp.c leon3: use qemu_irq framework instead of callback as property 2020-01-07 17:24:29 +04:00
heathrow_pic.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
i8259_common.c isa: Convert uses of isa_create() with Coccinelle 2020-06-15 22:05:28 +02:00
i8259.c hw: replace hw/i386/pc.h with a header just for the i8259 2019-12-17 19:33:49 +01:00
ibex_plic.c hw/intc: ibex_plic: Honour source priorities 2020-08-21 22:37:55 -07:00
imx_avic.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
imx_gpcv2.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
intc.c
ioapic_common.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ioapic.c KVM: Kick resamplefd for split kernel irqchip 2020-06-10 12:10:33 -04:00
Kconfig hw/intc: Add Loongson LIOINTC support 2020-06-27 19:42:22 +02:00
lm32_pic.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
loongson_liointc.c hw/intc: Add Loongson LIOINTC support 2020-06-27 19:42:22 +02:00
meson.build meson: convert hw/intc 2020-08-21 06:30:30 -04:00
mips_gic.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
nios2_iic.c nios2_iic: Use TYPE_ALTERA_IIC constant 2020-08-27 14:21:48 -04:00
omap_intc.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
ompic.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
openpic_kvm.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
openpic.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
pl190.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
pnv_xive_regs.h ppc/pnv: add a XIVE interrupt controller model for POWER9 2019-03-12 14:33:04 +11:00
pnv_xive.c error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
puv3_intc.c hw/unicore32/puv3: Use qemu_log_mask(ERROR) instead of debug printf() 2020-06-09 19:01:56 +02:00
realview_gic.c error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
rx_icu.c hw/intc: RX62N interrupt controller (ICUa) 2020-06-22 18:37:12 +02:00
s390_flic_kvm.c s390_flic: Move KVMS390FLICState typedef to header 2020-08-27 14:04:54 -04:00
s390_flic.c sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
sh_intc.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
slavio_intctl.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
spapr_xive_kvm.c spapr/xive: Allocate vCPU IPIs from the vCPU contexts 2020-09-08 10:08:42 +10:00
spapr_xive.c spapr/xive: Add a 'hv-prio' property to represent the KVM escalation priority 2020-09-08 10:08:42 +10:00
trace-events xics: Rename misleading ics_simple_*() functions 2019-10-04 19:08:22 +10:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vgic_common.h
xics_kvm.c error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
xics_pnv.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
xics_spapr.c spapr: Pass the maximum number of vCPUs to the KVM interrupt controller 2019-12-17 10:39:48 +11:00
xics.c error: Eliminate error_propagate() with Coccinelle, part 2 2020-07-10 15:18:08 +02:00
xilinx_intc.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
xive.c ppc/xive: Simplify error handling in xive_tctx_realize() 2020-08-13 21:07:28 +10:00
xlnx-pmu-iomod-intc.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
xlnx-zynqmp-ipi.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00