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| author |   Vladimir Murzin <vladimir.murzin@arm.com> | 2016-09-12 15:49:24 +0100 |
|---|---|---|
| committer |   Christoffer Dall <christoffer.dall@linaro.org> | 2016-09-22 13:22:21 +0200 |
| commit | acda5430bee4621f218391d0bcfbe4412adb3554 (patch) | |
| tree | d279ce897d2666ca9481963dca9fc9aede6e85dd /arch/arm/include/asm/kvm_host.h | |
| parent | ARM: gic-v3: Introduce 32-to-64-bit mappings for GICv3 cpu registers (diff) | |
| download | linux-dev-acda5430bee4621f218391d0bcfbe4412adb3554.tar.xz linux-dev-acda5430bee4621f218391d0bcfbe4412adb3554.zip | |
ARM: KVM: Support vgic-v3
This patch allows to build and use vgic-v3 in 32-bit mode.
Unfortunately, it can not be split in several steps without extra
stubs to keep patches independent and bisectable. For instance,
virt/kvm/arm/vgic/vgic-v3.c uses function from vgic-v3-sr.c, handling
access to GICv3 cpu interface from the guest requires vgic_v3.vgic_sre
to be already defined.
It is how support has been done:
* handle SGI requests from the guest
* report configured SRE on access to GICv3 cpu interface from the guest
* required vgic-v3 macros are provided via uapi.h
* static keys are used to select GIC backend
* to make vgic-v3 build KVM_ARM_VGIC_V3 guard is removed along with
the static inlines
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm/include/asm/kvm_host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index de338d93d11b..c2c40a7ee738 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -39,7 +39,12 @@ #include <kvm/arm_vgic.h> + +#ifdef CONFIG_ARM_GIC_V3 +#define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS +#else #define KVM_MAX_VCPUS VGIC_V2_MAX_CPUS +#endif #define KVM_REQ_VCPU_EXIT 8 |