Re: [PATCH v10 3/9] KVM: Extend the memslot to support fd-based private memory

[Xiaoyao Li]

On 12/8/2022 7:30 PM, Chao Peng wrote:
> On Thu, Dec 08, 2022 at 04:37:03PM +0800, Xiaoyao Li wrote:
> > On 12/2/2022 2:13 PM, Chao Peng wrote:
> >
> > ..
> >
> > > Together with the change, a new config HAVE_KVM_RESTRICTED_MEM is added
> > > and right now it is selected on X86_64 only.
> >
> >  From the patch implementation, I have no idea why HAVE_KVM_RESTRICTED_MEM is
> > needed.
>
> The reason is we want KVM further controls the feature enabling. An
> opt-in CONFIG_RESTRICTEDMEM can cause problem if user sets that for
> unsupported architectures.

HAVE_KVM_RESTRICTED_MEM is not used in this patch. It's better to 
introduce it in the patch that actually uses it.

> Here is the original discussion:
> https://lore.kernel.org/all/YkJLFu98hZOvTSrL@google.com/
>
> Thanks,
> Chao