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f226650494
linux/drivers/irqchip
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Marc Zyngier f226650494 arm64: Relax ICC_PMR_EL1 accesses when ICC_CTLR_EL1.PMHE is clear 
The GICv3 architecture specification is incredibly misleading when it
comes to PMR and the requirement for a DSB. It turns out that this DSB
is only required if the CPU interface sends an Upstream Control
message to the redistributor in order to update the RD's view of PMR.

This message is only sent when ICC_CTLR_EL1.PMHE is set, which isn't
the case in Linux. It can still be set from EL3, so some special care
is required. But the upshot is that in the (hopefuly large) majority
of the cases, we can drop the DSB altogether.

This relies on a new static key being set if the boot CPU has PMHE
set. The drawback is that this static key has to be exported to
modules.

Cc: Will Deacon <will@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Julien Thierry <julien.thierry.kdev@gmail.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-10-15 12:26:09 +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: Introduce Amazon's Annapurna Labs Fabric Interrupt Controller Driver 2019-07-03 09:19:11 +01:00
irq-alpine-msi.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
irq-armada-370-xp.c
irq-aspeed-i2c-ic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
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
irq-atmel-aic-common.c
irq-atmel-aic-common.h
irq-atmel-aic.c
irq-bcm2835.c irqchip: bcm283x: Switch to SPDX identifier 2018-12-13 09:35:36 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
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
irq-dw-apb-ictl.c genirq: Fix various typos in comments 2018-12-18 14:22:28 +01:00
irq-eznps.c
irq-ftintc010.c
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
irq-gic-v2m.c irqchip/gic-v2m: Register the frame's PA instead of its VA in fwnode 2019-08-07 14:24:37 +01:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
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 irqchip/gic-v3-its: Fix LPI release for Multi-MSI devices 2019-09-05 16:03:48 +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 arm64: Relax ICC_PMR_EL1 accesses when ICC_CTLR_EL1.PMHE is clear 2019-10-15 12:26:09 +01:00
irq-gic-v4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
irq-gic.c irqchip/gic: Prepare for more than 16 PPIs 2019-08-20 10:23:34 +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/i8259: Fix shutdown order by moving syscore_ops registration 2019-02-14 10:42:11 +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-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: Add irq-ingenic-tcu driver 2019-08-08 15:30:07 -07:00
irq-ingenic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 151 2019-05-30 11:26:28 -07:00
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
irq-keystone.c irqchip: Remove dev_err() usage after platform_get_irq() 2019-08-20 10:35:55 +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-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 fixes for 5.3 2019-08-01 20:21:00 +02:00
irq-meson-gpio.c irqchip/meson-gpio: Add support for meson sm1 SoCs 2019-08-30 15:01:06 +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 irqchip/mips-gic: Use the correct local interrupt map registers 2019-06-05 09:35:31 +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: Add support for System Error Interrupts (SEI) 2018-10-02 12:00:30 +01:00
irq-mvebu-odmi.c
irq-mvebu-pic.c
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irq-omap-intc.c
irq-ompic.c
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
irq-renesas-intc-irqpin.c irqchip/renesas-intc-irqpin: Use proper irq_chip name and parent 2019-06-11 12:22:42 +01:00
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-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/sifive-plic: set max threshold for ignored handlers 2019-09-05 01:59:55 -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: Use a platform driver for stm32mp1-exti device 2019-04-29 15:45:01 +01:00
irq-sun4i.c irqchip/sun4i: Add support for Allwinner ARMv5 F1C100s 2018-12-13 09:35:58 +00:00
irq-sunxi-nmi.c
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 kernel crash if irq_create_fwspec_mapping fail 2019-06-05 09:35:11 +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
irq-uniphier-aidet.c irqchip/uniphier-aidet: Use devm_platform_ioremap_resource() 2019-09-05 09:28:13 +01:00
irq-versatile-fpga.c
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
irq-vt8500.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
irq-xilinx-intc.c
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
irqchip.c
Kconfig irqchip/irq-ingenic-tcu: Fix COMPILE_TEST building 2019-08-19 22:15:37 +01:00
Makefile irqchip: Add irq-ingenic-tcu driver 2019-08-08 15:30:07 -07:00
qcom-irq-combiner.c irqchip: Remove dev_err() usage after platform_get_irq() 2019-08-20 10:35:55 +01:00
qcom-pdc.c irqchip/pdc: Setup all edge interrupts as rising edge at GIC 2018-10-02 10:37:38 +01:00
spear-shirq.c