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KVM: arm64: vgic-v3: Add ICV_IAR1_EL1 handler

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Add a handler for reading the guest's view of the ICC_IAR1_EL1
register. This involves finding the highest priority Group-1
interrupt, checking against both PMR and the active group
priority, activating the interrupt and setting the group
priority as active.

Tested-by: Alexander Graf <agraf@suse.de>
Acked-by: David Daney <david.daney@cavium.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
This commit is contained in:
Marc Zyngier
2017-06-09 12:49:36 +01:00
parent f8b630bc54
commit 132a324ab6
2 changed files with 164 additions and 0 deletions
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1
include/linux/irqchip/arm-gic-v3.h
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@@ -405,6 +405,7 @@
#define ICH_LR_PHYS_ID_SHIFT 32
#define ICH_LR_PHYS_ID_MASK (0x3ffULL << ICH_LR_PHYS_ID_SHIFT)
#define ICH_LR_PRIORITY_SHIFT 48
#define ICH_LR_PRIORITY_MASK (0xffULL << ICH_LR_PRIORITY_SHIFT)
/* These are for GICv2 emulation only */
#define GICH_LR_VIRTUALID (0x3ffUL << 0)