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

Chao Peng
2022-12-08T11:34:38Z

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.

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

Thanks,
Chao