| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] Xen cpufreq support status: how to notify hypervisor of
On 11 Apr 2006, at 01:05, Matt T. Yourst wrote:
Note that I only implemented this for powernow-k8 right now, since
that's the
only hardware I could test it on. It's very obvious how to adapt it to
the
other cpufreq drivers, by just replacing rdmsr and wrmsr with the Xen
wrapper
versions I provided, and adding in the setcpufreq hypercall at the end.
All this stuff should be done by emulating the MSR writes in
emulate_privileged_op() in arch/x86/traps.c. This will avoid any
modification of Linux at all. Currently there's only simple filtering
of MSR write attempts, but picking up on cpu-freq MSR accesses on e.g.,
AMD systems and also resync'ing the local clock would not be difficult.
-- Keir
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home