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| author | Andre Przywara <andre.przywara@arm.com> | 2016-01-22 18:18:52 +0000 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-05-20 15:39:57 +0200 |
| commit | 54f59d2b3a0a3d4e6f5038f5831aedb21350209d (patch) | |
| tree | 2f6c7d175c962f9930506bc2467f17b5c9a92f0e /virt/kvm | |
| parent | 741972d8a69ce748d84dfe0d68403054dfcae657 (diff) | |
| download | op-kernel-dev-54f59d2b3a0a3d4e6f5038f5831aedb21350209d.zip op-kernel-dev-54f59d2b3a0a3d4e6f5038f5831aedb21350209d.tar.gz | |
KVM: arm/arm64: vgic-new: Add GICv3 IDREGS register handler
We implement the only one ID register that is required by the
architecture, also this is the one that Linux actually checks.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-mmio-v3.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c index 64edd23..22e512c 100644 --- a/virt/kvm/arm/vgic/vgic-mmio-v3.c +++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c @@ -96,6 +96,18 @@ static unsigned long vgic_mmio_read_v3r_iidr(struct kvm_vcpu *vcpu, return (PRODUCT_ID_KVM << 24) | (IMPLEMENTER_ARM << 0); } +static unsigned long vgic_mmio_read_v3_idregs(struct kvm_vcpu *vcpu, + gpa_t addr, unsigned int len) +{ + switch (addr & 0xffff) { + case GICD_PIDR2: + /* report a GICv3 compliant implementation */ + return 0x3b; + } + + return 0; +} + /* * The GICv3 per-IRQ registers are split to control PPIs and SGIs in the * redistributors, while SPIs are covered by registers in the distributor @@ -161,7 +173,7 @@ static const struct vgic_register_region vgic_v3_dist_registers[] = { vgic_mmio_read_raz, vgic_mmio_write_wi, 64, VGIC_ACCESS_64bit | VGIC_ACCESS_32bit), REGISTER_DESC_WITH_LENGTH(GICD_IDREGS, - vgic_mmio_read_raz, vgic_mmio_write_wi, 48, + vgic_mmio_read_v3_idregs, vgic_mmio_write_wi, 48, VGIC_ACCESS_32bit), }; @@ -182,7 +194,7 @@ static const struct vgic_register_region vgic_v3_rdbase_registers[] = { vgic_mmio_read_raz, vgic_mmio_write_wi, 8, VGIC_ACCESS_64bit | VGIC_ACCESS_32bit), REGISTER_DESC_WITH_LENGTH(GICR_IDREGS, - vgic_mmio_read_raz, vgic_mmio_write_wi, 48, + vgic_mmio_read_v3_idregs, vgic_mmio_write_wi, 48, VGIC_ACCESS_32bit), }; |
