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alistair23-linux/include/linux/irqchip
Christoffer Dall 6d56111c92 KVM: arm/arm64: vgic: Fix GICC_PMR uaccess on GICv3 and clarify ABI
As an oversight, for GICv2, we accidentally export the GICC_PMR register
in the format of the GICH_VMCR.VMPriMask field in the lower 5 bits of a
word, meaning that userspace must always use the lower 5 bits to
communicate with the KVM device and must shift the value left by 3
places to obtain the actual priority mask level.

Since GICv3 supports the full 8 bits of priority masking in the ICH_VMCR,
we have to fix the value we export when emulating a GICv2 on top of a
hardware GICv3 and exporting the emulated GICv2 state to userspace.

Take the chance to clarify this aspect of the ABI.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
2017-04-04 14:33:59 +02:00
..
arm-gic-common.h irqchip/gic-v3: Parse and export virtual GIC information 2016-05-03 12:54:21 +02:00
arm-gic-v3.h KVM: arm/arm64: vgic-v3: Don't pretend to support IRQ/FIQ bypass 2017-03-06 10:30:57 +00:00
arm-gic.h KVM: arm/arm64: vgic: Fix GICC_PMR uaccess on GICv3 and clarify ABI 2017-04-04 14:33:59 +02:00
arm-vic.h irqchip: support cascaded VICs 2014-02-13 11:21:21 +01:00
chained_irq.h arm: Move chained_irq_(enter|exit) to a generic file 2013-03-26 16:11:43 +00:00
ingenic.h MIPS/IRQCHIP: Move Ingenic SoC intc driver to drivers/irqchip 2015-06-21 21:53:10 +02:00
irq-omap-intc.h irqchip: omap-intc: Remove unused legacy interface for omap2 2015-01-26 11:38:23 +01:00
irq-partition-percpu.h irqchip: Add per-cpu interrupt partitioning library 2016-05-02 13:42:51 +02:00
irq-sa11x0.h ARM: 8367/1: sa1100: prepare for moving irq driver to drivers/irqchip 2015-05-28 14:40:03 +01:00
metag-ext.h metag: Internal and external irqchips 2013-03-02 20:09:48 +00:00
metag.h metag: Internal and external irqchips 2013-03-02 20:09:48 +00:00
mips-gic.h clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
mmp.h ARM: mmp: avoid to include head file in mach-mmp 2013-08-24 17:44:45 +08:00
mxs.h ARM: mxs: move icoll driver into drivers/irqchip 2013-04-01 16:30:04 +08:00
versatile-fpga.h
xtensa-mx.h xtensa: add MX irqchip 2014-01-14 10:19:58 -08:00
xtensa-pic.h xtensa: move built-in PIC to drivers/irqchip 2014-01-14 10:19:56 -08:00