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82a65e3188
qemu-e2k/hw/intc
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Peter Maydell 82a65e3188 hw/intc/arm_gicv3_cpuif: handle LPIs in in the list registers 
The hypervisor can deliver (virtual) LPIs to a guest by setting up a
list register to have an intid which is an LPI.  The GIC has to treat
these a little differently to standard interrupt IDs, because LPIs
have no Active state, and so the guest will only EOI them, it will
not also deactivate them.  So icv_eoir_write() must do two things:

 * if the LPI ID is not in any list register, we drop the
   priority but do not increment the EOI count
 * if the LPI ID is in a list register, we immediately deactivate
   it, regardless of the split-drop-and-deactivate control

This can be seen in the VirtualWriteEOIR0() and VirtualWriteEOIR1()
pseudocode in the GICv3 architecture specification.

Without this fix, potentially a hypervisor guest might stall because
LPIs get stuck in a bogus Active+Pending state.

Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
2024-01-09 14:43:44 +00:00
..
allwinner-a10-pic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
apic_common.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
apic.c
arm_gic_common.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
arm_gic_kvm.c migration: simplify blockers 2023-10-20 08:51:41 +02:00
arm_gic.c arm: spelling fixes 2023-07-25 17:13:53 +03:00
arm_gicv2m.c
arm_gicv3_common.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
arm_gicv3_cpuif_common.c
arm_gicv3_cpuif.c hw/intc/arm_gicv3_cpuif: handle LPIs in in the list registers 2024-01-09 14:43:44 +00:00
arm_gicv3_dist.c
arm_gicv3_its_common.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
arm_gicv3_its_kvm.c hw/intc/arm_gicv3: Include missing 'qemu/error-report.h' header 2023-12-19 17:57:44 +00:00
arm_gicv3_its.c hw/intc/arm_gicv3_its: Avoid shadowing variable in do_process_its_cmd() 2023-09-29 10:07:18 +02:00
arm_gicv3_kvm.c migration: simplify blockers 2023-10-20 08:51:41 +02:00
arm_gicv3_redist.c arm: spelling fixes 2023-07-25 17:13:53 +03:00
arm_gicv3.c
armv7m_nvic.c hw/intc/armv7m_nvic: add "num-prio-bits" property 2024-01-09 14:42:40 +00:00
aspeed_vic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
bcm2835_ic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
bcm2836_control.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
etraxfs_pic.c
exynos4210_combiner.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
exynos4210_gic.c
gic_internal.h
gicv3_internal.h
goldfish_pic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
grlib_irqmp.c
heathrow_pic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
i8259_common.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
i8259.c
imx_avic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
imx_gpcv2.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
intc.c
ioapic_common.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
ioapic_internal.h
ioapic.c
Kconfig s390x: Fix QEMU abort by selecting S390_FLIC_KVM 2023-07-18 09:36:27 +02:00
kvm_irqcount.c
loongarch_extioi.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
loongarch_ipi.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
loongarch_pch_msi.c
loongarch_pch_pic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
loongson_liointc.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
m68k_irqc.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
meson.build
mips_gic.c accel/tcg: Replace CPUState.env_ptr with cpu_env() 2023-10-04 11:03:54 -07:00
nios2_vic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
omap_intc.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
ompic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
openpic_kvm.c
openpic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
pl190.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
pnv_xive2_regs.h
pnv_xive2.c ppc/xive: Use address_space routines to access the machine RAM 2023-09-06 11:19:33 +02:00
pnv_xive_regs.h ppc/xive: Handle END triggers between chips with MMIOs 2023-09-06 11:19:33 +02:00
pnv_xive.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
ppc-uic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
realview_gic.c
riscv_aclint.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
riscv_aplic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
riscv_imsic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
rx_icu.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
s390_flic_kvm.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
s390_flic.c system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
sh_intc.c
sifive_plic.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
slavio_intctl.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
spapr_xive_kvm.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
spapr_xive.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
trace-events pnv/xive: Print CPU target in all TIMA traces 2023-07-07 04:46:12 -03:00
trace.h
vgic_common.h
xics_kvm.c
xics_pnv.c
xics_spapr.c
xics.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
xilinx_intc.c
xive2.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
xive.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
xlnx-pmu-iomod-intc.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00
xlnx-zynqmp-ipi.c hw/intc: Constify VMState 2023-12-29 11:17:30 +11:00