Re: [PATCH] documentation/kvm: additional explanations on KVM_SET_BOOT_CPU_ID

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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@xxxxxxxxxx>
---
  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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