linux-kernel - Re: [PATCH v17 05/35] virt: gunyah: Add hypervisor driver

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Date: Fri, 23 Feb 2024 22:10:47 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Elliot Berman <quic_eberman@...cinc.com>, Alex Elder <elder@...aro.org>,
 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
 Murali Nalajal <quic_mnalajal@...cinc.com>,
 Trilok Soni <quic_tsoni@...cinc.com>,
 Srivatsa Vaddagiri <quic_svaddagi@...cinc.com>,
 Carl van Schaik <quic_cvanscha@...cinc.com>,
 Philip Derrin <quic_pderrin@...cinc.com>,
 Prakruthi Deepak Heragu <quic_pheragu@...cinc.com>,
 Jonathan Corbet <corbet@....net>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Catalin Marinas
 <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Fuad Tabba
 <tabba@...gle.com>, Sean Christopherson <seanjc@...gle.com>,
 Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-arm-msm@...r.kernel.org, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mm@...ck.org
Subject: Re: [PATCH v17 05/35] virt: gunyah: Add hypervisor driver

On 23.02.2024 00:16, Elliot Berman wrote:
> Add driver to detect when running under Gunyah. It performs basic
> identification hypercall and populates the platform bus for resource
> manager to probe.
> 
> Signed-off-by: Elliot Berman <quic_eberman@...cinc.com>
> ---

[...]

> +
> +	/* Might move this out to individual drivers if there's ever an API version bump */
> +	if (gunyah_api_version(&gunyah_api) != GUNYAH_API_V1) {
> +		pr_info("Unsupported Gunyah version: %u\n",
> +			gunyah_api_version(&gunyah_api));

Weird for this not to be an error, but it's probably not worth resending
over if it's the only thing

Konrad