Re: [PATCH V3] arm64/cpufeature: Validate hypervisor capabilities during CPU hotplug

[Will Deacon]

On Tue, 12 May 2020 07:27:27 +0530, Anshuman Khandual wrote:
> This validates hypervisor capabilities like VMID width, IPA range for any
> hot plug CPU against system finalized values. KVM's view of the IPA space
> is used while allowing a given CPU to come up. While here, it factors out
> get_vmid_bits() for general use.
> 
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will@xxxxxxxxxx>
> Cc: Marc Zyngier <maz@xxxxxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: James Morse <james.morse@xxxxxxx>
> Cc: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: kvmarm@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx

Applied to arm64 (for-next/cpufeature), thanks!

[1/1] arm64/cpufeature: Validate hypervisor capabilities during CPU hotplug
      https://git.kernel.org/arm64/c/c73433fc630c

But please note that I made some changes to verify_hyp_capabilities() so
that it's (a) static and (b) uses IS_ENABLED to avoid the dummy function
definition. I also extended the IS_ENABLED_check so that it doesn't
conflict with the KVM kconfig changes from Fuad. Please shout if you think
I'm still missing something.

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev