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

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
...@@ -95,11 +95,15 @@ enum vgic_type { ...@@ -95,11 +95,15 @@ enum vgic_type {
#define LR_STATE_ACTIVE (1 << 1) #define LR_STATE_ACTIVE (1 << 1)
#define LR_STATE_MASK (3 << 0) #define LR_STATE_MASK (3 << 0)
#define LR_EOI_INT (1 << 2) #define LR_EOI_INT (1 << 2)
#define LR_HW (1 << 3)
struct vgic_lr { struct vgic_lr {
u16 irq; unsigned irq:10;
u8 source; union {
u8 state; unsigned hwirq:10;
unsigned source:3;
};
unsigned state:4;
}; };
struct vgic_vmcr { struct vgic_vmcr {
......
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