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a3f574cd65
linux-next/drivers/irqchip
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Marc Zyngier a3f574cd65 KVM: arm64: vgic-v4: Plug race between non-residency and v4.1 doorbell 
When making a vPE non-resident because it has hit a blocking WFI,
the doorbell can fire at any time after the write to the RD.
Crucially, it can fire right between the write to GICR_VPENDBASER
and the write to the pending_last field in the its_vpe structure.

This means that we would overwrite pending_last with stale data,
and potentially not wakeup until some unrelated event (such as
a timer interrupt) puts the vPE back on the CPU.

GICv4 isn't affected by this as we actively mask the doorbell on
entering the guest, while GICv4.1 automatically manages doorbell
delivery without any hypervisor-driven masking.

Use the vpe_lock to synchronize such update, which solves the
problem altogether.

Fixes: ae699ad348 ("irqchip/gic-v4.1: Move doorbell management to the GICv4 abstraction layer")
Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2020-06-23 11:24:39 +01:00
..
alphascale_asm9260-icoll.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
exynos-combiner.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-al-fic.c irqchip/al-fic: Add support for irq retrigger 2019-09-09 18:11:47 +01:00
irq-alpine-msi.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
irq-armada-370-xp.c irqchip updates for 4.14 2017-08-31 20:12:51 +02:00
irq-aspeed-i2c-ic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-aspeed-scu-ic.c irqchip: Add Aspeed SCU interrupt controller 2020-01-20 19:10:04 +00:00
irq-aspeed-vic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
irq-ath79-cpu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-ath79-misc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-ativic32.c nds32: Power management for nds32 2018-11-06 18:01:41 +08:00
irq-atmel-aic5.c irqchip/atmel-aic5: Fix irq_retrigger callback return value 2020-03-16 15:48:54 +00:00
irq-atmel-aic-common.c irqchip/atmel-aic: Remove root argument from ->fixup() prototype 2017-07-04 11:10:37 +01:00
irq-atmel-aic-common.h irqchip/atmel-aic: Remove root argument from ->fixup() prototype 2017-07-04 11:10:37 +01:00
irq-atmel-aic.c irqchip/atmel-aic: Fix irq_retrigger callback return value 2020-03-16 15:48:54 +00:00
irq-bcm2835.c irqchip/bcm2835: Quiesce IRQs left enabled by bootloader 2020-03-16 15:48:54 +00:00
irq-bcm2836.c irqchip: bcm283x: Switch to SPDX identifier 2018-12-13 09:35:36 +00:00
irq-bcm6345-l1.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-bcm7038-l1.c irqchip/irq-bcm7038-l1: Make bcm7038_l1_of_init() static 2020-04-17 08:59:30 +01:00
irq-bcm7120-l2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-brcmstb-l2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
irq-clps711x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq-crossbar.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-csky-apb-intc.c irqchip/csky: fixup handle_irq_perbit break irq 2019-01-09 00:18:46 +08:00
irq-csky-mpintc.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-07-08 11:01:13 -07:00
irq-davinci-aintc.c irqchip: davinci-aintc: move the driver to drivers/irqchip 2019-02-19 20:02:17 +05:30
irq-davinci-cp-intc.c irqchip: davinci-cp-intc: move the driver to drivers/irqchip 2019-02-19 20:03:42 +05:30
irq-digicolor.c irqchip: Convert to using %pOF instead of full_name 2017-08-23 10:09:28 +01:00
irq-dw-apb-ictl.c genirq: Fix various typos in comments 2018-12-18 14:22:28 +01:00
irq-eznps.c irqchip/eznps: Drop pointless static qualifier in nps400_of_init() 2016-10-19 14:24:36 +02:00
irq-ftintc010.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq-gic-common.c irqchip/gic: Skip DT quirks when evaluating IIDR-based quirks 2019-08-20 10:23:35 +01:00
irq-gic-common.h irqchip/gic: Prepare for more than 16 PPIs 2019-08-20 10:23:34 +01:00
irq-gic-pm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
irq-gic-realview.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq-gic-v2m.c PCI: Remove unused includes and superfluous struct declaration 2019-11-21 07:49:29 -06:00
irq-gic-v3-its-fsl-mc-msi.c irqchip/gic-v3-its: Move minimum LPI requirements to individual busses 2018-07-16 14:22:19 +01:00
irq-gic-v3-its-pci-msi.c PCI: Remove unused includes and superfluous struct declaration 2019-11-21 07:49:29 -06:00
irq-gic-v3-its-platform-msi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
irq-gic-v3-its.c KVM: arm64: vgic-v4: Plug race between non-residency and v4.1 doorbell 2020-06-23 11:24:39 +01:00
irq-gic-v3-mbi.c irqchip/gic-v3-mbi: Don't map the MSI page in mbi_compose_m{b, s}i_msg() 2019-05-03 15:30:03 +01:00
irq-gic-v3.c irqchip/gic-v2, v3: Drop extra IRQ_NOAUTOEN setting for (E)PPIs 2020-05-25 10:32:51 +01:00
irq-gic-v4.c irqchip/gic-v4.1: Add VSGI property setup 2020-03-24 12:15:51 +00:00
irq-gic.c irqchip/gic-v2, v3: Drop extra IRQ_NOAUTOEN setting for (E)PPIs 2020-05-25 10:32:51 +01:00
irq-goldfish-pic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq-hip04.c irqchip/gic: Prepare for more than 16 PPIs 2019-08-20 10:23:34 +01:00
irq-i8259.c irqchip: Replace setup_irq() by request_irq() 2020-03-08 14:25:46 +00:00
irq-imgpdc.c irqchip: Remove dev_err() usage after platform_get_irq() 2019-08-20 10:35:55 +01:00
irq-imx-gpcv2.c irqchip fixes for 5.3 2019-08-01 20:21:00 +02:00
irq-imx-intmux.c irqchip: Add NXP INTMUX interrupt multiplexer support 2020-01-20 19:10:05 +00:00
irq-imx-irqsteer.c irqchip/imx-irqsteer: Use devm_platform_ioremap_resource() to simplify code 2019-04-29 15:45:00 +01:00
irq-ingenic-tcu.c irqchip/ingenic: Add support for TCU of X1000. 2020-03-22 11:52:52 +00:00
irq-ingenic.c irqchip: Replace setup_irq() by request_irq() 2020-03-08 14:25:46 +00:00
irq-ixp4xx.c irqchip/ixp4xx: Register the base PA instead of its VA in fwnode 2019-08-07 14:24:41 +01:00
irq-jcore-aic.c irqchip/jcore: Fix lost per-cpu interrupts 2016-10-14 14:26:55 +02:00
irq-keystone.c irqchip: Remove dev_err() usage after platform_get_irq() 2019-08-20 10:35:55 +01:00
irq-loongson-htpic.c irqchip: Add driver for Loongson-3 HyperTransport PIC controller 2020-03-25 10:56:43 +01:00
irq-loongson-htvec.c irqchip: Add Loongson HyperTransport Vector support 2020-05-29 09:42:18 +01:00
irq-loongson-liointc.c irqchip: loongson-liointc: Workaround LPC IRQ Errata 2020-03-25 10:56:00 +01:00
irq-loongson-pch-msi.c irqchip: Add Loongson PCH MSI controller 2020-05-29 09:42:18 +01:00
irq-loongson-pch-pic.c irqchip: Add Loongson PCH PIC controller 2020-05-29 09:42:18 +01:00
irq-lpc32xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159 2019-05-30 11:26:37 -07:00
irq-ls1x.c irqchip/irq-ls1x: Missing error code in ls1x_intc_of_init() 2019-04-05 14:37:56 +02:00
irq-ls-extirq.c irqchip: Add support for Layerscape external interrupt lines 2019-11-10 18:47:49 +00:00
irq-ls-scfg-msi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-madera.c irqchip/madera: Drop GPIO includes 2019-01-17 17:04:24 +00:00
irq-mbigen.c irqchip/mbigen: Free msi_desc on device teardown 2020-04-17 08:59:27 +01:00
irq-meson-gpio.c irqchip/meson-gpio: Fix HARDIRQ-safe -> HARDIRQ-unsafe lock order 2020-04-17 08:59:29 +01:00
irq-mips-cpu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq-mips-gic.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
irq-mmp.c irqchip/mmp: Coexist with GIC root IRQ controller 2019-08-30 15:23:30 +01:00
irq-mscc-ocelot.c irqchhip: Convert to using %pOFn instead of device_node.name 2018-12-13 09:35:56 +00:00
irq-mtk-cirq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
irq-mtk-sysirq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
irq-mvebu-gicp.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
irq-mvebu-icu.c irqchip/irq-mvebu-icu: Make legacy_bindings static 2020-04-17 08:59:29 +01:00
irq-mvebu-odmi.c irqchip/gic: Return IRQ_SET_MASK_OK_DONE in the set_affinity method 2016-02-19 15:42:29 +00:00
irq-mvebu-pic.c irqchip/mvebu-pic: New driver for Marvell Armada 7K/8K PIC 2016-08-22 22:58:27 +00:00
irq-mvebu-sei.c irqchip/irq-mvebu-sei: Make mvebu_sei_ap806_caps static 2019-03-21 16:43:00 +01:00
irq-mxs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
irq-nvic.c irqchip/nvic: Use irq_domain_translate_onecell instead of custom func 2020-01-20 09:24:47 +00:00
irq-omap-intc.c irqchip/irq-omap-intc: Do not statically initialize variables 2017-10-16 21:05:14 +02:00
irq-ompic.c irqchip/ompic: fix return value check in ompic_of_init() 2018-01-04 11:13:22 +00:00
irq-or1k-pic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq-orion.c irqchip: Convert to using %pOFn instead of device_node.name 2018-11-27 10:54:17 -06:00
irq-partition-percpu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
irq-pic32-evic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq-rda-intc.c irqchip/irq-rda-intc: Fix return value check in rda8810_intc_init() 2018-12-18 12:55:23 +00:00
irq-renesas-h8s.c genirq: Fix various typos in comments 2018-12-18 14:22:28 +01:00
irq-renesas-h8300h.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq-renesas-intc-irqpin.c irqchip/renesas-intc-irqpin: Restore devm_ioremap() alignment 2020-03-08 14:25:46 +00:00
irq-renesas-irqc.c irqchip/renesas-irqc: Use proper irq_chip name and parent 2019-06-11 12:22:42 +01:00
irq-renesas-rza1.c irqchip/renesas-rza1: Fix an use-after-free in rza1_irqc_probe() 2019-07-26 14:40:01 +01:00
irq-riscv-intc.c clocksource/drivers/timer-riscv: Use per-CPU timer interrupt 2020-06-09 19:11:22 -07:00
irq-s3c24xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
irq-sa11x0.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-sifive-plic.c irqchip: RISC-V per-HART local interrupt controller driver 2020-06-09 19:11:21 -07:00
irq-sirfsoc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
irq-sni-exiu.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-07-08 11:01:13 -07:00
irq-st.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-stm32-exti.c irqchip/stm32: Add irq retrigger support 2020-03-08 14:25:45 +00:00
irq-sun4i.c irqchip/sun4i: Add support for Allwinner ARMv5 F1C100s 2018-12-13 09:35:58 +00:00
irq-sunxi-nmi.c irqchip/sunxi-nmi: Support sun6i-a31-r-intc compatible 2017-06-22 14:08:17 +01:00
irq-tango.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
irq-tb10x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
irq-tegra.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
irq-ti-sci-inta.c irqchip/ti-sci-inta: Fix processing of masked irqs 2020-04-17 08:59:28 +01:00
irq-ti-sci-intr.c irqchip/ti-sci-intr: Add support for Interrupt Router driver 2019-05-01 10:48:56 +01:00
irq-ts4800.c irqchip/ts4800: Make ts4800_ic_ops static const 2016-02-18 02:09:18 +00:00
irq-uniphier-aidet.c irqchip/uniphier-aidet: Use devm_platform_ioremap_resource() 2019-09-05 09:28:13 +01:00
irq-versatile-fpga.c irqchip/versatile-fpga: Apply clear-mask earlier 2020-03-22 11:52:16 +00:00
irq-vf610-mscm-ir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-vic.c irqchip: vic: Support cascaded VIC in device tree 2020-03-08 14:25:45 +00:00
irq-vt8500.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
irq-xilinx-intc.c Revert "irqchip/xilinx: Enable generic irq multi handler" 2020-04-01 09:12:24 +01:00
irq-xtensa-mx.c drivers/irqchip: xtensa-mx: fix mask and unmask 2019-01-26 02:02:15 -08:00
irq-xtensa-pic.c drivers/irqchip: xtensa: add warning to irq_retrigger 2019-01-26 02:02:14 -08:00
irq-zevio.c irqchip: Remove redundant semicolon after while 2019-11-10 18:47:44 +00:00
irqchip.c irqchip / GIC: Convert the GIC driver to ACPI probing 2015-10-01 02:18:38 +02:00
Kconfig irqchip: RISC-V per-HART local interrupt controller driver 2020-06-09 19:11:21 -07:00
Makefile irqchip: RISC-V per-HART local interrupt controller driver 2020-06-09 19:11:21 -07:00
qcom-irq-combiner.c irqchip/qcom-irq-combiner: Replace zero-length array with flexible-array member 2020-03-22 11:52:52 +00:00
qcom-pdc.c irqchip/qcom-pdc: Add irqchip set/get state calls 2019-11-16 10:22:01 +00:00
spear-shirq.c remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00