* [PATCH] documentation/kvm: additional explanations on KVM_SET_BOOT_CPU_ID
@ 2021-03-19 9:16 Emanuele Giuseppe Esposito
2021-03-19 9:31 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Emanuele Giuseppe Esposito @ 2021-03-19 9:16 UTC (permalink / raw)
To: linux-doc
Cc: Paolo Bonzini, Jonathan Corbet, Andrew Jones, Vitaly Kuznetsov,
kvm, linux-kernel
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@redhat.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
--
2.29.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] documentation/kvm: additional explanations on KVM_SET_BOOT_CPU_ID
2021-03-19 9:16 [PATCH] documentation/kvm: additional explanations on KVM_SET_BOOT_CPU_ID Emanuele Giuseppe Esposito
@ 2021-03-19 9:31 ` Paolo Bonzini
0 siblings, 0 replies; 2+ messages in thread
From: Paolo Bonzini @ 2021-03-19 9:31 UTC (permalink / raw)
To: Emanuele Giuseppe Esposito, linux-doc
Cc: Jonathan Corbet, Andrew Jones, Vitaly Kuznetsov, kvm,
linux-kernel
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@redhat.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
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2021-03-19 9:16 [PATCH] documentation/kvm: additional explanations on KVM_SET_BOOT_CPU_ID Emanuele Giuseppe Esposito
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