linux-kernel - Re: [PATCH] documentation/kvm: additional explanations on KVM_SET_BOOT_CPU

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Message-ID: <8d48bf1b-208c-89fb-1150-b9d7f589e152@redhat.com>
Date:   Fri, 19 Mar 2021 10:31:43 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Emanuele Giuseppe Esposito <eesposit@...hat.com>,
        linux-doc@...r.kernel.org
Cc:     Jonathan Corbet <corbet@....net>,
        Andrew Jones <drjones@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] documentation/kvm: additional explanations on
 KVM_SET_BOOT_CPU_ID

On 19/03/21 10:16, Emanuele Giuseppe Esposito wrote:
> The ioctl KVM_SET_BOOT_CPU_ID fails when called after vcpu creation.
> Add this explanation in the documentation.
> 
> Signed-off-by: Emanuele Giuseppe Esposito <eesposit@...hat.com>
> ---
>   Documentation/virt/kvm/api.rst | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
> index 38e327d4b479..bece398227f5 100644
> --- a/Documentation/virt/kvm/api.rst
> +++ b/Documentation/virt/kvm/api.rst
> @@ -1495,7 +1495,8 @@ Fails if any VCPU has already been created.
>   
>   Define which vcpu is the Bootstrap Processor (BSP).  Values are the same
>   as the vcpu id in KVM_CREATE_VCPU.  If this ioctl is not called, the default
> -is vcpu 0.
> +is vcpu 0. This ioctl has to be called before vcpu creation,
> +otherwise it will return EBUSY error.
>   
>   
>   4.42 KVM_GET_XSAVE
> 

Queued, thanks.

Paolo