On 12/09/16 15:49, Vladimir Murzin wrote: > We have couple of 64-bit registers defined in GICv3 architecture, so > unsigned long accesses to these registers will only access a single > 32-bit part of that regitser. On the other hand these registers can't > be accessed as 64-bit with a single instruction like ldrd/strd or > ldmia/stmia if we run a 32-bit host because KVM does not support > access to MMIO space done by these instructions. > > It means that a 32-bit guest accesses these registers in 32-bit > chunks, so the only thing we need to do is to ensure that > extract_bytes() always takes 64-bit data. > > Signed-off-by: Vladimir Murzin <vladimir.murzin@xxxxxxx> > --- > virt/kvm/arm/vgic/vgic-mmio-v3.c | 2 +- > virt/kvm/arm/vgic/vgic-mmio.h | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) Acked-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
