linux-kernel - Re: [PATCH v5 0/4] Allow userspace to change ID_AA64PFR1

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Message-Id: <172460529881.3851223.2305395558569783838.b4-ty@kernel.org>
Date: Sun, 25 Aug 2024 18:01:43 +0100
From: Marc Zyngier <maz@...nel.org>
To: Oliver Upton <oliver.upton@...ux.dev>,
	kvmarm@...ts.linux.dev,
	Mark Brown <broonie@...nel.org>,
	Shaoqin Huang <shahuang@...hat.com>
Cc: Eric Auger <eauger@...hat.com>,
	Sebastian Ott <sebott@...hat.com>,
	Cornelia Huck <cohuck@...hat.com>,
	Catalin Marinas <catalin.marinas@....com>,
	James Morse <james.morse@....com>,
	kvm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	Paolo Bonzini <pbonzini@...hat.com>,
	Shuah Khan <shuah@...nel.org>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Will Deacon <will@...nel.org>,
	Zenghui Yu <yuzenghui@...wei.com>
Subject: Re: [PATCH v5 0/4] Allow userspace to change ID_AA64PFR1_EL1

On Tue, 23 Jul 2024 03:19:59 -0400, Shaoqin Huang wrote:
> This is another try to allow userspace to change ID_AA64PFR1_EL1, and we want to
> give userspace the ability to control the visible feature set for a VM, which
> could be used by userspace in such a way to transparently migrate VMs.
> 
> The patch series have four part:
> 
> The first patch disable those fields which KVM doesn't know how to handle, so
> KVM will only expose value 0 of those fields to the guest.
> 
> [...]

Applied to next, thanks!

[1/4] KVM: arm64: Disable fields that KVM doesn't know how to handle in ID_AA64PFR1_EL1
      commit: ffe68b2d19a5a84440fea99a732cfc3b157559eb
[2/4] KVM: arm64: Use kvm_has_feat() to check if FEAT_SSBS is advertised to the guest
      commit: e8d164974cfa46fe5ec87869c8a7113641f322d5
[3/4] KVM: arm64: Allow userspace to change ID_AA64PFR1_EL1
      commit: 78c4446b5f957fb14737582e503b1b25f66edc45
[4/4] KVM: selftests: aarch64: Add writable test for ID_AA64PFR1_EL1
      commit: dc9b5d7e0bd40e68a94013766b27be3dda10c006

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.