[PATCH v2 0/5] GICv3: add 32bit compatibility

[Jean-Philippe Brucker]

Hi Vladimir,

On Wed, Mar 11, 2015 at 11:19:08AM +0000, Vladimir Murzin wrote:
> On 02/03/15 18:20, Jean-Philippe Brucker wrote:
> > This series adds 32bit compatibility to Marc's GICv3 driver. Only SGIs,
> > PPIs and SPIs support is present, no ITS.
> > 
> > It is now based on Linux 4.0-rc1, which contains Andre's GICv3 emulation
> > series for KVM [1]. With this support along with the kvmtool patches
> > mentioned in [1], it is possible to run ARM guests that use GICv3.
> > 
> > Changes since v1 [2]:
> > * rebased on 4.0-rc1
> > * fix the mistakes pointed out by Russell and Vladimir
> > * add a patch to select ARM_GIC_V3 under ARCH_VIRT, as suggested by Marc
> > 
> > [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-January/316230.html
> > [2] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-December/310124.htm
> > 
> 
> Hi Jean,
> 
> In case CONFIG_KVM_ARM_VGIC=y there is build error:
> 
>   CC      arch/arm/kvm/../../../virt/kvm/arm/vgic.o
>  arch/arm/kvm/../../../virt/kvm/arm/vgic.c: In function 'kvm_vgic_addr':
>  arch/arm/kvm/../../../virt/kvm/arm/vgic.c:1703:7: error:
> 'KVM_VGIC_V3_ADDR_TYPE_DIST' undeclared (first use in this function)
>    case KVM_VGIC_V3_ADDR_TYPE_DIST:
>         ^
>  arch/arm/kvm/../../../virt/kvm/arm/vgic.c:1703:7: note: each undeclared
> identifier is reported only once for each function it appears in
>  arch/arm/kvm/../../../virt/kvm/arm/vgic.c:1706:16: error:
> 'KVM_VGIC_V3_DIST_SIZE' undeclared (first use in this function)
>     block_size = KVM_VGIC_V3_DIST_SIZE;
>                  ^
>  arch/arm/kvm/../../../virt/kvm/arm/vgic.c:1709:7: error:
> 'KVM_VGIC_V3_ADDR_TYPE_REDIST' undeclared (first use in this function)
>    case KVM_VGIC_V3_ADDR_TYPE_REDIST:
>         ^
>  arch/arm/kvm/../../../virt/kvm/arm/vgic.c:1712:16: error:
> 'KVM_VGIC_V3_REDIST_SIZE' undeclared (first use in this function)
>     block_size = KVM_VGIC_V3_REDIST_SIZE;
>                  ^
>  make[1]: *** [arch/arm/kvm/../../../virt/kvm/arm/vgic.o] Error 1
>  make: *** [arch/arm/kvm] Error 2
> 

Indeed. I will add a 6th patch in the next series to use *VGIC_V3 (along
with vgic_v3_probe) only when CONFIG_ARM64 is set.

Thanks,
Jean