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Re: [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support

On 02.08.21 14:01, Joerg Roedel wrote:
On Wed, Jul 28, 2021 at 08:29:41AM -0700, Dave Hansen wrote:
__set_memory_enc_dec() is turning into a real mess.  SEV, TDX and now
Hyper-V are messing around in here.

I was going to suggest a PV_OPS call where the fitting implementation
for the guest environment can be plugged in at boot. There is TDX and an
SEV(-SNP) case, a Hyper-V case, and likely more coming up from other
cloud/hypervisor vendors. Hiding all these behind feature checks is not
going to make things cleaner.

As those cases are all mutually exclusive, wouldn't a static_call() be
the appropriate solution?


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