On 21/03/17 21:05, Christoffer Dall wrote: > As an oversight, for GICv2, we accidentally export the GICC_PMR register > in the format of the GICH_VMCR.VMPriMask field in the lower 5 bits of a > word, meaning that userspace must always use the lower 5 bits to > communicate with the KVM device and must shift the value left by 3 > places to obtain the actual priority mask level. > > Since GICv3 supports the full 8 bits of priority masking in the ICH_VMCR, > we have to fix the value we export when emulating a GICv2 on top of a > hardware GICv3 and exporting the emulated GICv2 state to userspace. > > Take the chance to clarify this aspect of the ABI. > > Signed-off-by: Christoffer Dall <cdall@xxxxxxxxxx> Reviewed-by: Marc Zyngier <marc.zyngier@xxxxxxx> M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
