Re: [PATCH v10 19/41] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86

[David Hildenbrand (Arm)]

On 8/7/26 23:52, Ackerley Tng via B4 Relay wrote:
> From: Sean Christopherson <seanjc@xxxxxxxxxx>
> 
> Bury KVM_VM_MEMORY_ATTRIBUTES in x86 to discourage other architectures
> from adding support for per-VM memory attributes, because tracking private
> vs. shared memory on a per-VM basis is now deprecated in favor of tracking
> on a per-guest_memfd basis, and while RWX memory attributes are on the
> horizon, they too are expected to be x86-only.
> 
> This will also allow modifying KVM_VM_MEMORY_ATTRIBUTES to be
> user-selectable (in x86) without creating weirdness in KVM's Kconfigs.
> Now that guest_memfd supports in-place conversions, it's entirely possible
> to run x86 CoCo VMs without support for KVM_VM_MEMORY_ATTRIBUTES.
> 
> Leave the code itself in common KVM so that it's trivial to undo this
> change if new per-VM attributes do come along.
> 
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> Reviewed-by: Fuad Tabba <tabba@xxxxxxxxxx>
> Reviewed-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
> Reviewed-by: Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx>
> Tested-by: Shivank Garg <shivankg@xxxxxxx>
> Signed-off-by: Ackerley Tng <ackerleytng@xxxxxxxxxx>
> ---

Reviewed-by: David Hildenbrand (Arm) <david@xxxxxxxxxx>

-- 
Cheers,

David