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

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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@xxxxxxxxxx/

Thanks,
Chao




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