On Wed, Jun 10, 2020 at 01:00:37PM +0200, Borislav Petkov wrote: > From: Borislav Petkov <[email protected]> > > Add a callback which gets executed after a MSR is written from > userspace. This is needed because in the case of AMD's MSR_AMD64_LS_CFG > MSR which gets cached in the kernel, the cached value needs to be > updated after the write, otherwise latter doesn't stick.
We cache a whole bunch of MSRs in kernel. Why is this one special? If you write using the stupid msr device, you get to keep all pieces.
