Marc Zyngier 464cb98f1c irqchip/gic-v3: Force propagation of the active state with a read-back ... Christoffer reports that on some implementations, writing to GICR_ISACTIVER0 (and similar GICD registers) can race badly with a guest issuing a deactivation of that interrupt via the system register interface. There are multiple reasons to this: - this uses an early write-acknoledgement memory type (nGnRE), meaning that the write may only have made it as far as some interconnect by the time the store is considered "done" - the GIC itself is allowed to buffer the write until it decides to take it into account (as long as it is in finite time) The effects are that the activation may not have taken effect by the time the kernel enters the guest, forcing an immediate exit, or that a guest deactivation occurs before the interrupt is active, doing nothing. In order to guarantee that the write to the ISACTIVER register has taken effect, read back from it, forcing the interconnect to propagate the write, and the GIC to process the write before returning the read. Reported-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Christoffer Dall <christoffer.dall@arm.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/20241106084418.3794612-1-maz@kernel.org		2024-11-07 00:22:44 +01:00
..
alphascale_asm9260-icoll.h
exynos-combiner.c
irq-al-fic.c
irq-alpine-msi.c	irqchip/alpine-msi: Fix off-by-one in allocation error path	2024-04-09 11:03:15 +02:00
irq-apple-aic.c	irqchip/apple-aic: Only access system registers on SoCs which provide them	2024-09-04 20:43:30 +02:00
irq-armada-370-xp.c	irqchip/armada-370-xp: Use mpic_is_ipi_available() in mpic_of_init()	2024-08-08 17:15:01 +02:00
irq-aspeed-i2c-ic.c
irq-aspeed-scu-ic.c
irq-aspeed-vic.c
irq-ath79-cpu.c
irq-ath79-misc.c
irq-atmel-aic5.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-atmel-aic-common.c	of: remove internal arguments from of_property_for_each_u32()	2024-07-25 06:53:47 -05:00
irq-atmel-aic-common.h
irq-atmel-aic.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-bcm2835.c	irqchip/bcm2835: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND	2024-07-15 15:13:55 +02:00
irq-bcm2836.c
irq-bcm6345-l1.c	irqchip/irq-bcm6345-l1: Avoid explicit cpumask allocation on stack	2024-04-24 21:23:49 +02:00
irq-bcm7038-l1.c	irqchip/irq-bcm7038-l1: Prefer struct_size over open coded arithmetic	2024-02-13 10:53:15 +01:00
irq-bcm7120-l2.c
irq-brcmstb-l2.c	irqchip/irq-brcmstb-l2: Avoid saving mask on shutdown	2024-04-24 21:11:48 +02:00
irq-clps711x.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-crossbar.c
irq-csky-apb-intc.c
irq-csky-mpintc.c
irq-davinci-cp-intc.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-digicolor.c
irq-dw-apb-ictl.c	Revert "irqchip/dw-apb-ictl: Support building as module"	2024-06-25 21:30:48 +02:00
irq-ftintc010.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-gic-common.c	irqchip/gic-v3: Make distributor priorities variables	2024-06-24 18:16:44 +01:00
irq-gic-common.h	Switch ARM/ARM64 over to the modern per device MSI domains:	2024-07-22 14:02:19 -07:00
irq-gic-pm.c	irqchip: Explicitly include correct DT includes	2023-08-21 17:49:11 +01:00
irq-gic-realview.c
irq-gic-v2m.c	irqchip/gic-v2m: Fix refcount leak in gicv2m_of_init()	2024-08-20 17:05:32 +02:00
irq-gic-v3-its-fsl-mc-msi.c	irqchip: Explicitly include correct DT includes	2023-08-21 17:49:11 +01:00
irq-gic-v3-its-msi-parent.c	irqchip/gic-v3-its: Correctly fish out the DID for platform MSI	2024-07-18 20:34:46 +02:00
irq-gic-v3-its.c	irqchip/gic-v4: Correctly deal with set_affinity on lazily-mapped VPEs	2024-10-27 17:30:16 +01:00
irq-gic-v3-mbi.c	irqchip/gic_v3_mbi: Switch over to parent domain	2024-07-18 20:31:20 +02:00
irq-gic-v3.c	irqchip/gic-v3: Force propagation of the active state with a read-back	2024-11-07 00:22:44 +01:00
irq-gic-v4.c	irqchip/gic-v4.1: Replace bare number with ID_AA64PFR0_EL1_GIC_V4P1	2024-08-02 14:54:25 +02:00
irq-gic.c	irqchip/gic-v3: Make distributor priorities variables	2024-06-24 18:16:44 +01:00
irq-goldfish-pic.c
irq-hip04.c	irqchip/gic-v3: Make distributor priorities variables	2024-06-24 18:16:44 +01:00
irq-i8259.c	irqchipr/i8259: Mark i8259_of_init() static	2023-08-21 17:40:30 +01:00
irq-idt3243x.c
irq-imgpdc.c	irqchip/imgpdc: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:09 +01:00
irq-imx-gpcv2.c
irq-imx-intmux.c	Updates for the MSI interrupt subsystem and RISC-V initial MSI support:	2024-03-11 14:03:03 -07:00
irq-imx-irqsteer.c	irqchip/imx-irqsteer: Handle runtime power management correctly	2024-07-15 15:13:56 +02:00
irq-imx-mu-msi.c	irqchip/imx-mu-msi: Switch to MSI parent	2024-07-18 20:31:20 +02:00
irq-ingenic-tcu.c
irq-ingenic.c
irq-ixp4xx.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-jcore-aic.c	irqchip/jcore-aic: Fix missing allocation of IRQ descriptors	2023-06-17 07:54:48 +01:00
irq-keystone.c	irqchip/keystone: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:09 +01:00
irq-lan966x-oic.c	irqchip: Add support for LAN966x OIC	2024-06-17 15:48:15 +02:00
irq-loongarch-avec.c	irqchip/loongarch-avec: Add AVEC irqchip support	2024-08-23 20:40:27 +02:00
irq-loongarch-cpu.c	Updates for the interrupt subsystem:	2024-09-17 07:09:17 +02:00
irq-loongson-eiointc.c	irqchip/loongarch-avec: Add AVEC irqchip support	2024-08-23 20:40:27 +02:00
irq-loongson-htpic.c
irq-loongson-htvec.c	LoongArch: Move irqchip function prototypes to irq-loongson.h	2024-08-23 20:40:27 +02:00
irq-loongson-liointc.c	LoongArch: Move irqchip function prototypes to irq-loongson.h	2024-08-23 20:40:27 +02:00
irq-loongson-pch-lpc.c	LoongArch: Move irqchip function prototypes to irq-loongson.h	2024-08-23 20:40:27 +02:00
irq-loongson-pch-msi.c	irqchip/loongarch-avec: Add AVEC irqchip support	2024-08-23 20:40:27 +02:00
irq-loongson-pch-pic.c	LoongArch: Move irqchip function prototypes to irq-loongson.h	2024-08-23 20:40:27 +02:00
irq-loongson.h	irqchip/loongarch-avec: Add AVEC irqchip support	2024-08-23 20:40:27 +02:00
irq-lpc32xx.c
irq-ls1x.c
irq-ls-extirq.c
irq-ls-scfg-msi.c	irqchip/ls-scfg-msi: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:10 +01:00
irq-madera.c	irqchip/madera: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:10 +01:00
irq-mbigen.c	Updates for the interrupt subsystem:	2024-09-17 07:09:17 +02:00
irq-mchp-eic.c	irqchip/mchp-eic: remove MODULE_LICENSE in non-modules	2023-04-13 13:13:52 -07:00
irq-meson-gpio.c	irqchip/meson-gpio: Convert meson_gpio_irq_controller::lock to 'raw_spinlock_t'	2024-07-29 15:43:50 +02:00
irq-mips-cpu.c
irq-mips-gic.c	irqchip/mips-gic: Mark gic_irq_domain_free() static	2023-08-21 17:40:20 +01:00
irq-mmp.c	irqchip/mmp: Remove non-DT codepath	2023-06-17 07:21:02 +01:00
irq-mscc-ocelot.c	irqchip/ocelot: Comment sticky register clearing code	2024-10-02 15:11:07 +02:00
irq-msi-lib.c	irqchip/irq-msi-lib: Check for NULL ops in msi_lib_irq_domain_select()	2024-08-23 13:55:15 +02:00
irq-msi-lib.h	irqchip/irq-msi-lib: Prepare for DEVICE MSI to replace platform MSI	2024-07-18 20:31:20 +02:00
irq-mst-intc.c
irq-mtk-cirq.c
irq-mtk-sysirq.c
irq-mvebu-gicp.c	irqchip/mvebu-gicp: Switch to MSI parent	2024-07-18 20:31:20 +02:00
irq-mvebu-icu.c	irqchip/irq-mvebu-icu: Remove platform MSI leftovers	2024-07-18 20:31:21 +02:00
irq-mvebu-odmi.c	irqchip/mvebu-odmi: Switch to parent MSI	2024-07-18 20:31:21 +02:00
irq-mvebu-pic.c	irqchip: Add missing MODULE_DESCRIPTION() macros	2024-06-23 17:23:08 +02:00
irq-mvebu-sei.c	irqchip/irq-mvebu-sei: Switch to MSI parent	2024-07-18 20:31:21 +02:00
irq-mxs.c	irqchip/mxs: Declare icoll_handle_irq() as static	2024-04-23 00:28:14 +02:00
irq-nvic.c
irq-omap-intc.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-ompic.c
irq-or1k-pic.c
irq-orion.c	irqchip/orion: Use of_address_count() helper	2023-08-21 17:48:59 +01:00
irq-owl-sirq.c
irq-partition-percpu.c
irq-pic32-evic.c	A couple of fixes for interrupt chip drivers:	2024-08-04 08:36:57 -07:00
irq-pruss-intc.c	irqchip/pruss-intc: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:10 +01:00
irq-qcom-mpm.c	irqchip/qcom-mpm: Fix IS_ERR() vs NULL check in qcom_mpm_init()	2024-02-13 10:26:15 +01:00
irq-rda-intc.c
irq-realtek-rtl.c
irq-renesas-intc-irqpin.c	irqchip/renesas-intc-irqpin: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:10 +01:00
irq-renesas-irqc.c	irqchip/renesas-irqc: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:10 +01:00
irq-renesas-rza1.c	irqchip/renesas-rza1: Convert to platform_driver::remove_new() callback	2024-02-27 18:12:10 +01:00
irq-renesas-rzg2l.c	irqchip/renesas-rzg2l: Fix missing put_device	2024-10-15 23:54:35 +02:00
irq-riscv-aplic-direct.c	irqchip/riscv-aplic: Add ACPI support	2024-08-27 15:48:36 +02:00
irq-riscv-aplic-main.c	irqchip/riscv-aplic: Add ACPI support	2024-08-27 15:48:36 +02:00
irq-riscv-aplic-main.h	irqchip/riscv-aplic: Add ACPI support	2024-08-27 15:48:36 +02:00
irq-riscv-aplic-msi.c	irqchip/riscv-aplic: Add ACPI support	2024-08-27 15:48:36 +02:00
irq-riscv-imsic-early.c	irqchip/riscv-imsic: Add ACPI support	2024-08-27 15:48:36 +02:00
irq-riscv-imsic-platform.c	irqchip/riscv-imsic: Fix output text of base address	2024-10-02 15:12:18 +02:00
irq-riscv-imsic-state.c	irqchip/riscv-imsic: Add ACPI support	2024-08-27 15:48:36 +02:00
irq-riscv-imsic-state.h	irqchip/riscv-imsic: Add ACPI support	2024-08-27 15:48:36 +02:00
irq-riscv-intc.c	irqchip/riscv-intc: Fix SMP=n boot with ACPI	2024-10-15 23:14:25 +02:00
irq-sa11x0.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-sifive-plic.c	irqchip/sifive-plic: Unmask interrupt in plic_irq_enable()	2024-10-08 17:49:21 +02:00
irq-sl28cpld.c	irqchip/irq-sl28cpld: remove MODULE_LICENSE in non-modules	2023-04-13 13:13:53 -07:00
irq-sni-exiu.c
irq-sp7021-intc.c
irq-st.c	irqchip: Explicitly include correct DT includes	2023-08-21 17:49:11 +01:00
irq-starfive-jh8100-intc.c	irqchip: Add StarFive external interrupt controller	2024-02-26 15:09:18 +01:00
irq-stm32-exti.c	irqchip/stm32-exti: Split MCU and MPU code	2024-06-23 19:49:45 +02:00
irq-stm32mp-exti.c	irqchip/stm32mp-exti: Allow building as module	2024-06-24 00:16:43 +02:00
irq-sun4i.c
irq-sun6i-r.c	minmax: don't use max() in situations that want a C constant expression	2024-07-28 20:23:27 -07:00
irq-sunxi-nmi.c	irqchip: Remove redundant irq_chip::name initialization	2024-03-25 17:38:29 +01:00
irq-tb10x.c	irqchip: Remove redundant irq_chip::name initialization	2024-03-25 17:38:29 +01:00
irq-tegra.c
irq-ti-sci-inta.c	irqchip: Explicitly include correct DT includes	2023-08-21 17:49:11 +01:00
irq-ti-sci-intr.c	irqchip: Explicitly include correct DT includes	2023-08-21 17:49:11 +01:00
irq-ts4800.c	irqchip: Add missing MODULE_DESCRIPTION() macros	2024-06-23 17:23:08 +02:00
irq-uniphier-aidet.c	irqchip: Explicitly include correct DT includes	2023-08-21 17:49:11 +01:00
irq-versatile-fpga.c	irqchip: Remove asmlinkage for handlers registered with set_handle_irq()	2024-07-30 13:35:49 +02:00
irq-vf610-mscm-ir.c
irq-vic.c	irqchip/vic: Fix a kernel-doc warning	2024-02-21 18:31:08 +01:00
irq-vt8500.c
irq-wpcm450-aic.c
irq-xilinx-intc.c	irqchip/xilinx: Fix shift out of bounds	2024-08-10 10:39:24 +02:00
irq-xtensa-mx.c	irqchip: irq-xtensa-mx: include header for missing prototype	2023-09-20 05:03:20 -07:00
irq-xtensa-pic.c	irqchip/irq-xtensa-pic: Clean up	2023-12-12 15:45:39 +01:00
irq-zevio.c
irqchip.c	irqchip: Explicitly include correct DT includes	2023-08-21 17:49:11 +01:00
Kconfig	irqchip: Remove obsolete config ARM_GIC_V3_ITS_PCI	2024-10-02 15:08:12 +02:00
Makefile	irqchip/loongarch-avec: Add AVEC irqchip support	2024-08-23 20:40:27 +02:00
qcom-irq-combiner.c
qcom-pdc.c	irqchip/qcom-pdc: Add support for v3.2 HW	2023-09-12 13:38:08 +01:00
spear-shirq.c