An ITT_Entry_Size of 2x8Bytes is reported to the guest to provision for ITTE state storage.
Signed-off-by: Eric Auger <[email protected]> --- include/linux/irqchip/arm-gic-v3.h | 1 + virt/kvm/arm/vgic/vgic-its.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 170e00a..8cfd81bc 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -233,6 +233,7 @@ #define GITS_CTLR_QUIESCENT (1U << 31) #define GITS_TYPER_PLPIS (1UL << 0) +#define GITS_TYPER_ITT_ENTRY_SIZE_SHIFT 4 #define GITS_TYPER_IDBITS_SHIFT 8 #define GITS_TYPER_DEVBITS_SHIFT 13 #define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1) diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index e174220..96378b8 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -33,6 +33,8 @@ #include "vgic.h" #include "vgic-mmio.h" +#define ITTE_SIZE 16 + /* * Creates a new (reference to a) struct vgic_irq for a given LPI. * If this LPI is already mapped on another ITS, we increase its refcount @@ -399,6 +401,7 @@ static unsigned long vgic_mmio_read_its_typer(struct kvm *kvm, */ reg |= 0x0f << GITS_TYPER_DEVBITS_SHIFT; reg |= 0x0f << GITS_TYPER_IDBITS_SHIFT; + reg |= ITTE_SIZE << GITS_TYPER_ITT_ENTRY_SIZE_SHIFT; return extract_bytes(reg, addr & 7, len); } -- 2.5.5 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
