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qemu/hw/intc
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Peter Maydell a68fc9dbde 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>
(cherry picked from commit 82a65e3188)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-01-11 20:59:34 +03:00
..
allwinner-a10-pic.c hw/intc/allwinner-a10-pic: Handle IRQ levels other than 0 or 1 2023-06-19 11:24:21 +01:00
apic_common.c hw/intc/apic: Use ERRP_GUARD() in apic_common_realize() 2023-10-19 23:13:28 +02:00
apic.c apic: disable reentrancy detection for apic-msi 2023-04-28 11:31:54 +02:00
arm_gic_common.c hw/intc/arm_gic: Rename 'first_cpu' argument 2023-06-28 14:27:59 +02:00
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/arm_gic: Un-inline GIC*/ITS class_name() helpers 2023-06-28 14:27:59 +02:00
arm_gicv3_cpuif_common.c hw/intc/arm_gicv3: Extract gicv3_set_gicv3state from arm_gicv3_cpuif.c 2021-12-15 10:11:34 +00:00
arm_gicv3_cpuif.c hw/intc/arm_gicv3_cpuif: handle LPIs in in the list registers 2024-01-11 20:59:34 +03:00
arm_gicv3_dist.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
arm_gicv3_its_common.c kvm: require KVM_CAP_SIGNAL_MSI 2023-10-25 17:35:14 +02:00
arm_gicv3_its_kvm.c kvm: require KVM_IRQFD for kernel irqchip 2023-10-25 17:35:15 +02:00
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 hw/intc/arm_gicv3: Specify valid and impl in MemoryRegionOps 2022-03-07 13:16:50 +00:00
armv7m_nvic.c target/arm: Move feature test functions to their own header 2023-10-27 11:44:32 +01:00
aspeed_vic.c
bcm2835_ic.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
bcm2836_control.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
etraxfs_pic.c
exynos4210_combiner.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
exynos4210_gic.c Misc cleanups 2022-04-21 09:27:54 -07:00
gic_internal.h
gicv3_internal.h hw/intc/arm_gicv3: Update ID and feature registers for GICv4 2022-04-22 14:44:53 +01:00
goldfish_pic.c hw/m68k: Fix typo in SPDX tag 2021-11-09 10:11:27 +01:00
grlib_irqmp.c
heathrow_pic.c hw/ppc/mac.h: Rename to include/hw/nvram/mac_nvram.h 2022-10-31 18:48:23 +00:00
i8259_common.c hw/intc/i8259: Implement legacy LTIM Edge/Level Bank Select 2023-03-08 00:37:48 +01:00
i8259.c hw/intc/i8259: Implement legacy LTIM Edge/Level Bank Select 2023-03-08 00:37:48 +01:00
imx_avic.c
imx_gpcv2.c
intc.c
ioapic_common.c hw: Move ioapic*.h to intc/ 2023-02-27 22:29:01 +01:00
ioapic_internal.h hw: Move ioapic*.h to intc/ 2023-02-27 22:29:01 +01:00
ioapic.c hw/intc/ioapic: Update KVM routes before redelivering IRQ, on RTE update 2023-03-15 11:52:25 +01:00
Kconfig s390x: Fix QEMU abort by selecting S390_FLIC_KVM 2023-07-18 09:36:27 +02:00
kvm_irqcount.c hw/intc: Extract the IRQ counting functions into a separate file 2023-01-13 16:22:57 +01:00
loongarch_extioi.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
loongarch_ipi.c hw/intc: Set physical cpuid route for LoongArch ipi device 2023-06-16 17:58:46 +08:00
loongarch_pch_msi.c hw/intc/loongarch_pch_msi: add irq number property 2023-01-06 10:54:20 +08:00
loongarch_pch_pic.c hw/intc/loongarch_pch: fix edge triggered irq handling 2023-08-24 11:17:59 +08:00
loongson_liointc.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
m68k_irqc.c hw/m68k/irqc: Pass CPU using QOM link property 2023-11-01 07:20:34 +01:00
meson.build meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
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: Vectored Interrupt Controller (VIC) 2022-04-26 08:17:05 -07:00
omap_intc.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
ompic.c
openpic_kvm.c
openpic.c hw/intc/openpic: Clean up local variable shadowing 2023-09-29 10:07:17 +02:00
pl190.c
pnv_xive2_regs.h pnv/xive2: Add definition for the ESB cache configuration register 2023-06-10 10:19:24 -03:00
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/ppc-uic: Convert ppc-uic to a PPC4xx DCR device 2022-08-31 14:08:06 -03:00
realview_gic.c
riscv_aclint.c accel/tcg: Replace CPUState.env_ptr with cpu_env() 2023-10-04 11:03:54 -07:00
riscv_aplic.c target/riscv: move KVM only files to kvm subdir 2023-10-12 12:20:24 +10:00
riscv_imsic.c accel/tcg: Replace CPUState.env_ptr with cpu_env() 2023-10-04 11:03:54 -07:00
rx_icu.c
s390_flic_kvm.c s390x: spelling fixes 2023-07-25 17:13:45 +03:00
s390_flic.c
sh_intc.c hw/intc/sh_intc: Remove unneeded local variable initialisers 2021-10-30 18:39:37 +02:00
sifive_plic.c hw/intc: sifive_plic: Fix the pending register range check 2023-01-06 10:42:55 +10:00
slavio_intctl.c
spapr_xive_kvm.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
spapr_xive.c hw/intc/spapr_xive: Do not use SysBus API to map local MMIO region 2023-10-19 23:13:28 +02:00
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 Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
xics_pnv.c
xics_spapr.c
xics.c migration: Hack to maintain backwards compatibility for ppc 2023-11-01 16:13:58 +01:00
xilinx_intc.c hw/intc/xilinx_intc: Use 'XpsIntc' typedef instead of 'struct xlx_pic' 2023-01-12 17:15:09 +00:00
xive2.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
xive.c hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
xlnx-pmu-iomod-intc.c
xlnx-zynqmp-ipi.c