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Re: [Xen-devel] [PATCH] SVM: split _np_enable VMCB field

On 26/03/2020 14:00, Jan Beulich wrote:
> The nest paging enable is actually just a single bit within the 64-bit
> VMCB field, which is particularly relevant for uses like the one in
> nsvm_vcpu_vmentry().

Lucky for us, these are configuration options, not returned data, so at
least the field won't change behind our back.  Also, it should be fixed
for the lifetime of the domain.

>  Split the field, adding definitions for a few other
> bits at the same time. To be able to generate accessors for bitfields,
> VMCB_ACCESSORS() needs the type part broken out, as typeof() can't be
> applied to bitfields. Unfortunately this means specification of the same
> type in two distinct places.
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>



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