linux-kernel - Re: [PATCH v7 0/9] KVM: arm64: Add support for hypercall services selection

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Date:   Wed,  4 May 2022 13:01:23 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Andrew Jones <drjones@...hat.com>,
        Raghavendra Rao Ananta <rananta@...gle.com>,
        James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Will Deacon <will@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Peter Shier <pshier@...gle.com>,
        Catalin Marinas <catalin.marinas@....com>, kvm@...r.kernel.org,
        kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 0/9] KVM: arm64: Add support for hypercall services selection

On Mon, 2 May 2022 23:38:44 +0000, Raghavendra Rao Ananta wrote:
> Continuing the discussion from [1], the series tries to add support
> for the userspace to elect the hypercall services that it wishes
> to expose to the guest, rather than the guest discovering them
> unconditionally. The idea employed by the series was taken from
> [1] as suggested by Marc Z.
> 
> In a broad sense, the concept is similar to the current implementation
> of PSCI interface- create a 'firmware psuedo-register' to handle the
> firmware revisions. The series extends this idea to all the other
> hypercalls such as TRNG (True Random Number Generator), PV_TIME
> (Paravirtualized Time), and PTP (Precision Time protocol).
> 
> [...]

Applied to next, thanks!

[1/9] KVM: arm64: Factor out firmware register handling from psci.c
      commit: 85fbe08e4da862dc64fc10071c4a03e51b6361d0
[2/9] KVM: arm64: Setup a framework for hypercall bitmap firmware registers
      commit: 05714cab7d63b189894235cf310fae7d6ffc2e9b
[3/9] KVM: arm64: Add standard hypervisor firmware register
      commit: 428fd6788d4d0e0d390de9fb4486be3c1187310d
[4/9] KVM: arm64: Add vendor hypervisor firmware register
      commit: b22216e1a617ca55b41337cd1e057ebc784a65d4
[5/9] Docs: KVM: Rename psci.rst to hypercalls.rst
      commit: f1ced23a9be5727c6f4cac0e2262c5411038952f
[6/9] Docs: KVM: Add doc for the bitmap firmware registers
      commit: fa246c68a04d46c7af6953b47dba7e16d24efbe2
[7/9] tools: Import ARM SMCCC definitions
      commit: ea733263949646700977feeb662a92703f514351
[8/9] selftests: KVM: aarch64: Introduce hypercall ABI test
      commit: 5ca24697d54027c1c94c94a5b920a75448108ed0
[9/9] selftests: KVM: aarch64: Add the bitmap firmware registers to get-reg-list
      commit: 920f4a55fdaa6f68b31c50cca6e51fecac5857a0

Cheers,

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