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Commit 32d2d801 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

KVM: arm/arm64: vgic: Convert struct vgic_lr to use bitfields 



As we're about to cram more information in the vgic_lr structure
(HW interrupt number and additional state information), we switch
to a layout similar to the HW's:

- use bitfields to save space (we don't need more than 10 bits
  to represent the irq numbers)
- source CPU and HW interrupt can share the same field, as
  a SGI doesn't have a physical line.

Reviewed-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent abdf5843

include/kvm/arm_vgic.h

+7 −3
Original line number Diff line number Diff line
@@ -95,11 +95,15 @@ enum vgic_type { 
#define LR_STATE_ACTIVE		(1 << 1)

#define LR_STATE_MASK		(3 << 0)

#define LR_EOI_INT		(1 << 2)

#define LR_HW			(1 << 3)



struct vgic_lr {

	u16	irq;

	u8	source;

	u8	state;

	unsigned irq:10;

	union {

		unsigned hwirq:10;

		unsigned source:3;

	};

	unsigned state:4;

};



struct vgic_vmcr {