[PATCH v5 07/69] KVM: arm64: nv: Introduce nested virtualization VCPU feature

[Russell King (Oracle)]

On Mon, Nov 29, 2021 at 08:00:48PM +0000, Marc Zyngier wrote:
> From: Christoffer Dall <christoffer.dall at arm.com>
> 
> Introduce the feature bit and a primitive that checks if the feature is
> set behind a static key check based on the cpus_have_const_cap check.
> 
> Checking nested_virt_in_use() on systems without nested virt enabled
> should have neglgible overhead.
> 
> We don't yet allow userspace to actually set this feature.
> 
> Signed-off-by: Christoffer Dall <christoffer.dall at arm.com>
> Signed-off-by: Marc Zyngier <maz at kernel.org>

Reviewed-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>

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