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Date:   Mon, 18 May 2020 16:55:53 +0100
From:   Andrew Scull <ascull@google.com>
To:     David Brazdil <dbrazdil@google.com>
Cc:     Catalin Marinas <catalin.marinas@arm.com>,
        James Morse <james.morse@arm.com>,
        Julien Thierry <julien.thierry.kdev@gmail.com>,
        Marc Zyngier <maz@kernel.org>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Will Deacon <will@kernel.org>, kvmarm@lists.cs.columbia.edu,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 04/14] arm64: kvm: Add build rules for separate nVHE
 object files
Message-ID: <20200518155553.GB147668@google.com>
References: <20200515105841.73532-1-dbrazdil@google.com>
 <20200515105841.73532-5-dbrazdil@google.com>
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On Fri, May 15, 2020 at 11:58:31AM +0100, David Brazdil wrote:
> diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h
> index 7f06ad93fc95..13850134fc28 100644
> --- a/arch/arm64/kernel/image-vars.h
> +++ b/arch/arm64/kernel/image-vars.h
> @@ -51,4 +51,16 @@ __efistub__ctype		= _ctype;
>  
>  #endif
>  
> +#ifdef CONFIG_KVM
> +
> +/*
> + * KVM nVHE code has its own symbol namespace prefixed by __hyp_text_, to
> + * isolate it from the kernel proper. The following symbols are legally
> + * accessed by it, therefore provide aliases to make them linkable.
> + * Do not include symbols which may not be safely accessed under hypervisor
> + * memory mappings.
> + */

nit: the prefix is not '__kvm_nvhe_' rather than '__hyp_text_'