On 10/15/2009 02:41 PM, Ed Swierk wrote:
Support for Xen PV-on-HVM guests can be implemented almost entirely in
userspace, except for handling one annoying MSR that maps a Xen
hypercall blob into guest address space.
A generic mechanism to delegate MSR writes to userspace seems overkill
and
Ed Swierk wrote:
Support for Xen PV-on-HVM guests can be implemented almost entirely in
userspace, except for handling one annoying MSR that maps a Xen
hypercall blob into guest address space.
A generic mechanism to delegate MSR writes to userspace seems overkill
and risks encouraging
Hi,
Is the msr number really variable? Isn't it an ABI?
Yes, it is variable. The guests gets the msr number via cpuid ...
Do we need support for reading the msr?
I don't think so.
cheers,
Gerd
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On 10/15/2009 05:11 PM, Gerd Hoffmann wrote:
Hi,
Is the msr number really variable? Isn't it an ABI?
Yes, it is variable. The guests gets the msr number via cpuid ...
Do we need support for reading the msr?
I don't think so.
Thanks. So Ed, I think you're good to go, but please
Support for Xen PV-on-HVM guests can be implemented almost entirely in
userspace, except for handling one annoying MSR that maps a Xen
hypercall blob into guest address space.
A generic mechanism to delegate MSR writes to userspace seems overkill
and risks encouraging similar MSR abuse in the