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qemu/hw/intc
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Peter Maydell dbf80fdef8 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 20:59:59 +03:00
..
allwinner-a10-pic.c hw/intc/allwinner-a10-pic: Handle IRQ levels other than 0 or 1 2023-06-22 10:38:09 +03:00
apic_common.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
apic.c apic: disable reentrancy detection for apic-msi 2023-09-11 10:53:50 +03:00
arm_gic_common.c arm_gic: Mask the un-supported priority bits 2020-02-28 16:14:57 +00:00
arm_gic_kvm.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
arm_gic.c hw/intc: add implementation of GICD_IIDR to Arm GIC 2022-11-21 11:45:13 +00:00
arm_gicv2m.c arm tcg cpus: Fix Lesser GPL version number 2020-11-15 16:42:14 +01:00
arm_gicv3_common.c hw/intc/arm_gicv3: Use correct number of priority bits for the CPU 2022-05-19 16:19:02 +01:00
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 20:59:59 +03:00
arm_gicv3_dist.c Fix 'writeable' typos 2022-06-08 19:38:47 +01:00
arm_gicv3_its_common.c hw/intc/arm_gicv3_its: Revert version increments in vmstate_its 2021-11-22 18:17:19 +00:00
arm_gicv3_its_kvm.c hw/intc/arm_gicv3: Keep pointers to every connected ITS 2022-04-22 09:24:44 +01:00
arm_gicv3_its.c hw/intc/arm_gicv3: Update ID and feature registers for GICv4 2022-04-22 14:44:53 +01:00
arm_gicv3_kvm.c hw/intc/arm_gicv3_kvm.c: Stop using GIC_MIN_BPR constant 2022-05-19 16:19:02 +01:00
arm_gicv3_redist.c misc: fix commonly doubled up words 2022-08-01 11:58:02 +02:00
arm_gicv3.c hw/intc/arm_gicv3: Specify valid and impl in MemoryRegionOps 2022-03-07 13:16:50 +00:00
armv7m_nvic.c hw/intc/armv7m_nvic: ICPRn must not unpend an IRQ that is being held high 2022-07-18 13:20:09 +01:00
aspeed_vic.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
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 hw: Replace anti-social QOM type names 2021-03-19 15:18:43 +01:00
exynos4210_combiner.c hw/arm/exynos4210: Put combiners into state struct 2022-04-21 11:37:04 +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 Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
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 intc: Unexport InterruptStatsProviderClass-related functions 2022-01-27 12:08:50 +01:00
i8259.c hw/intc/i8259: Refactor pic_read_irq() to avoid uninitialized variable 2021-03-19 08:48:18 -04:00
imx_avic.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
imx_gpcv2.c hw: Do not include qemu/log.h if it is not necessary 2021-05-02 17:24:50 +02:00
intc.c
ioapic_common.c intc: Unexport InterruptStatsProviderClass-related functions 2022-01-27 12:08:50 +01:00
ioapic.c Remove superfluous timer_del() calls 2021-01-08 15:13:38 +00:00
Kconfig hw/intc: Add LoongArch extioi interrupt controller(EIOINTC) 2022-06-06 18:12:30 +00:00
loongarch_extioi.c hw/intc: Fix LoongArch extioi coreisr accessing 2022-11-04 17:07:40 +08:00
loongarch_ipi.c loongarch: mark loongarch_ipi_iocsr re-entrnacy safe 2023-09-11 10:53:50 +03:00
loongarch_pch_msi.c hw/intc/loongarch_pch_msi: Fix msi vector convertion 2022-07-04 11:08:58 +05:30
loongarch_pch_pic.c hw/intc/loongarch_pch_pic: Fix bugs for update_irq function 2022-07-19 21:53:58 +05:30
loongson_liointc.c hw/intc/loongson_liointc: Fix per core ISR handling 2021-02-21 18:41:46 +01:00
m68k_irqc.c hw/m68k: Fix typo in SPDX tag 2021-11-09 10:11:27 +01:00
meson.build hw/intc: Add LoongArch extioi interrupt controller(EIOINTC) 2022-06-06 18:12:30 +00:00
mips_gic.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
nios2_vic.c hw/intc: Vectored Interrupt Controller (VIC) 2022-04-26 08:17:05 -07:00
omap_intc.c omap_intc: Use typedef name for instance_size 2020-09-09 13:20:22 -04:00
ompic.c hw: Do not include qemu/log.h if it is not necessary 2021-05-02 17:24:50 +02:00
openpic_kvm.c memory: Name all the memory listeners 2021-09-30 15:30:24 +02:00
openpic.c hw/ppc/mac.h: Rename to include/hw/nvram/mac_nvram.h 2022-10-31 18:48:23 +00:00
pl190.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
pnv_xive2_regs.h pnv/xive2: Add support for automatic save&restore 2022-03-02 06:51:39 +01:00
pnv_xive2.c ppc: Define SETFIELD for the ppc target 2022-07-06 10:22:38 -03:00
pnv_xive_regs.h
pnv_xive.c ppc: Define SETFIELD for the ppc target 2022-07-06 10:22:38 -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 error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
riscv_aclint.c hw/intc: Make rtc variable names consistent 2023-09-13 12:21:22 +03:00
riscv_aplic.c Fix 'writeable' typos 2022-06-08 19:38:47 +01:00
riscv_imsic.c target/riscv: Use official extension names for AIA CSRs 2022-09-07 09:18:33 +02:00
rx_icu.c hw/intc: fix heap-buffer-overflow in rxicu_realize() 2020-11-23 10:41:58 +00:00
s390_flic_kvm.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
s390_flic.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
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: change interrupt priority register to WARL field 2022-10-14 14:29:50 +10:00
slavio_intctl.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
spapr_xive_kvm.c spapr/xive: Use xive_esb_rw() to trigger interrupts 2021-10-21 11:42:47 +11:00
spapr_xive.c ppc/xive: Add support for PQ state bits offload 2022-03-02 06:51:39 +01:00
trace-events hw/intc: Convert the memops to with_attrs in LoongArch extioi 2022-11-04 17:07:37 +08:00
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 Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
xics_pnv.c non-virt: Fix Lesser GPL version number 2020-11-15 16:38:24 +01:00
xics_spapr.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
xics.c hw/intc/xics: Avoid dynamic stack allocation 2022-09-22 16:38:28 +01:00
xilinx_intc.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
xive2.c ppc/xive: Update the state of the External interrupt signal 2022-05-05 15:36:17 -03:00
xive.c ppc64: Allocate IRQ lines with qdev_init_gpio_in() 2022-07-18 13:59:43 -03:00
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