linux-kernel - Re: [PATCH v4 16/26] kvm: arm64: Bootstrap PSCI SMC handler in nVHE EL2

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Date:   Thu, 03 Dec 2020 13:46:14 +0000
From:   Marc Zyngier <maz@...nel.org>
To:     David Brazdil <dbrazdil@...gle.com>
Cc:     kvmarm@...ts.cs.columbia.edu, Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Sudeep Holla <sudeep.holla@....com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kernel-team@...roid.com
Subject: Re: [PATCH v4 16/26] kvm: arm64: Bootstrap PSCI SMC handler in nVHE
 EL2

A couple of cosmetic comments below, none of which require immediate
addressing.

[...]

> diff --git a/arch/arm64/kvm/hyp/nvhe/psci-relay.c
> b/arch/arm64/kvm/hyp/nvhe/psci-relay.c
> new file mode 100644
> index 000000000000..61375d4571c2
> --- /dev/null
> +++ b/arch/arm64/kvm/hyp/nvhe/psci-relay.c
> @@ -0,0 +1,100 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (C) 2020 - Google LLC
> + * Author: David Brazdil <dbrazdil@...gle.com>
> + */
> +
> +#include <asm/kvm_asm.h>
> +#include <asm/kvm_hyp.h>
> +#include <asm/kvm_mmu.h>
> +#include <kvm/arm_hypercalls.h>
> +#include <linux/arm-smccc.h>
> +#include <linux/psci.h>
> +#include <kvm/arm_psci.h>

nit: is there an ordering issue that requires this to be out
of order?

> +#include <uapi/linux/psci.h>
> +
> +#include <nvhe/trap_handler.h>
> +
> +/* Config options set by the host. */
> +__ro_after_init u32 kvm_host_psci_version;
> +__ro_after_init struct psci_0_1_function_ids 
> kvm_host_psci_0_1_function_ids;

nit: we usually place attributes after the type.

Thanks,

         M.
-- 
Jazz is not dead. It just smells funny...