linux-kernel - Re: [PATCH 1/2] riscv: kvm: Add KVM_GET_REG

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Date:   Thu, 11 May 2023 23:48:08 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Haibo Xu <haibo1.xu@...el.com>
Cc:     xiaobo55x@...il.com, ajones@...tanamicro.com,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...shpatra.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Shuah Khan <shuah@...nel.org>, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 1/2] riscv: kvm: Add KVM_GET_REG_LIST API support

On Thu, May 11, 2023 at 11:25:41PM +0100, Conor Dooley wrote:
> On Thu, May 11, 2023 at 05:22:48PM +0800, Haibo Xu wrote:
> > KVM_GET_REG_LIST API will return all registers that are available to
> > KVM_GET/SET_ONE_REG APIs. It's very useful to identify some platform
> > regression issue during VM migration.
> > 
> > Since this API was already supported on arm64, it'd be straightforward
> > to enable it on riscv with similar code structure.
> 
> Applied on top of v6.4-rc1 this breaks the build :/

I lied, I forgot W=1 is enabled for the allmodconfig builds in the
patchwork automation.
The warnings are trivial to fix, so you should fix them anyway!

> warning: Function parameter or member 'vcpu' not described in 'kvm_riscv_vcpu_num_regs'
> warning: Function parameter or member 'uindices' not described in 'kvm_riscv_vcpu_copy_reg_indices'
> warning: Function parameter or member 'vcpu' not described in 'kvm_riscv_vcpu_copy_reg_indices'
> 
> You have a bunch of kerneldoc comments (the ones with /**) that are not
> valid kerneldoc. Apparently allmodconfig catches that!
> 
> Cheers,
> Conor.



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