On 04/02/16 19:26, Christoffer Dall wrote: > On Wed, Feb 03, 2016 at 05:59:53PM +0000, Marc Zyngier wrote: >> ARMv8.1 comes with the "Virtualization Host Extension" (VHE for >> short), which enables simpler support of Type-2 hypervisors. >> >> This extension allows the kernel to directly run at EL2, and >> significantly reduces the number of system registers shared between >> host and guest, reducing the overhead of virtualization. >> >> In order to have the same kernel binary running on all versions of the >> architecture, this series makes heavy use of runtime code patching. >> >> The first 22 patches massage the KVM code to deal with VHE and enable >> Linux to run at EL2. The last patch catches an ugly case when VHE >> capable CPUs are paired with some of their less capable siblings. This >> should never happen, but hey... >> >> I have deliberately left out some of the more "advanced" >> optimizations, as they are likely to distract the reviewer from the >> core infrastructure, which is what I care about at the moment. >> >> Note: GDB is currently busted on VHE systems, as it checks for version >> 6 on the debug architecture, while VHE is version 7. The >> binutils people are on the case. >> >> This has been tested on the FVP_Base_SLV-V8-A model, and based on >> v4.5-rc2. I've put a branch out on: >> >> git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/vhe >> > > You can have my reviewed-by on all patches that I didn't already review > or ack explicitly. Thanks for the review, much appreciated. > Only exception is the debug stuff where I didn't manage to page in the > context, so hopefully familiar with that code can have a look. I think this will have to be Mr Deacon. Thanks again, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
