Re: [Xen-devel] [PATCH 2/2] x86/pvshim: do not enable global pages in shim mode

[Jan Beulich <jbeulich@xxxxxxxx>]

On 29.11.2019 15:36, Roger Pau Monné  wrote:
> On Fri, Nov 29, 2019 at 12:12:51PM +0000, Andrew Cooper wrote:
>> I agree that this wants a command line control, but it wants to be
>> enabled by default any time we find ourselves nested on AMD hardware,
>> not just in shim.
> 
> Only on AMD hardware? Newer versions of Xen don't trap CR4 PGE writes,
> but what about other hypervisors?

I guess all hypervisors will strive to force as little exits as
possible.

Jan

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