On 3 August 2012 09:15, Laurent Desnogues <laurent.desnog...@gmail.com> wrote: > On Thu, Aug 2, 2012 at 2:20 PM, Itaru Kitayama <kitay...@cl.bb4u.ne.jp> wrote: >> The recent upstream highbank kernel uses smc to enable its L2 cache, >> but on a qemu virt machine >> it is not supported yet. Is it likely supported by qemu soon? What is >> the time frame for that?
(cc'd the highbank maintainer) > For other people reading this, SMC is the instruction used by ARM > processors to call routines written in the Secure world. The issue > here is that even if you had support for that instruction, it wouldn't > be enough because each platform has different SMC > implementations, which code of course is not public, and quite > often even the API is undocumented. Oh, that SMC. I thought we might be talking about the hardware manufacturer... > Riku Voipio has a branch which implements some basic security > stuff here: > > http://git.linaro.org/gitweb?p=people/rikuvoipio/qemu.git;a=shortlog;h=refs/heads/linaro That's just a personal (and as you say old) copy of qemu-linaro. qemu-linaro proper is here: http://git.linaro.org/gitweb?p=qemu/qemu-linaro.git;a=shortlog;h=refs/heads/rebasing My proposal for how we should handle SMC is here: http://lists.gnu.org/archive/html/qemu-devel/2012-05/msg03012.html (the code in qemu-linaro for SMC is similar to that but not exactly the same semantics). -- PMM
