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Date:   Wed, 1 Sep 2021 21:23:25 +0000
From:   Oliver Upton <oupton@google.com>
To:     Raghavendra Rao Ananta <rananta@google.com>
Cc:     Paolo Bonzini <pbonzini@redhat.com>, Marc Zyngier <maz@kernel.org>,
        James Morse <james.morse@arm.com>,
        Alexandru Elisei <alexandru.elisei@arm.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, Peter Shier <pshier@google.com>,
        Ricardo Koller <ricarkol@google.com>,
        Reiji Watanabe <reijiw@google.com>,
        Jing Zhang <jingzhangos@google.com>,
        linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PATCH v3 01/12] KVM: arm64: selftests: Add MMIO readl/writel
 support
Message-ID: <YS/vTVPi7Iam+ZXX@google.com>
References: <20210901211412.4171835-1-rananta@google.com>
 <20210901211412.4171835-2-rananta@google.com>
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On Wed, Sep 01, 2021 at 09:14:01PM +0000, Raghavendra Rao Ananta wrote:
> Define the readl() and writel() functions for the guests to
> access (4-byte) the MMIO region.
> 
> The routines, and their dependents, are inspired from the kernel's
> arch/arm64/include/asm/io.h and arch/arm64/include/asm/barrier.h.
> 
> Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
> ---
>  .../selftests/kvm/include/aarch64/processor.h | 45 ++++++++++++++++++-
>  1 file changed, 44 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h
> index c0273aefa63d..3cbaf5c1e26b 100644
> --- a/tools/testing/selftests/kvm/include/aarch64/processor.h
> +++ b/tools/testing/selftests/kvm/include/aarch64/processor.h
> @@ -130,6 +130,49 @@ void vm_install_sync_handler(struct kvm_vm *vm,
>  	val;								  \
>  })
>  
> -#define isb()	asm volatile("isb" : : : "memory")
> +#define isb()		asm volatile("isb" : : : "memory")

Is this a stray diff?

Otherwise:

Reviewed-by: Oliver Upton <oupton@google.com>