Re: [Xen-devel] [RFC Patch v4 8/8] x86/hvm: bump the maximum number of vcpus to 512

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Dec 06, 2017 at 03:50:14PM +0800, Chao Gao wrote:
> Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>
> ---
>  xen/include/public/hvm/hvm_info_table.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/xen/include/public/hvm/hvm_info_table.h 
> b/xen/include/public/hvm/hvm_info_table.h
> index 08c252e..6833a4c 100644
> --- a/xen/include/public/hvm/hvm_info_table.h
> +++ b/xen/include/public/hvm/hvm_info_table.h
> @@ -32,7 +32,7 @@
>  #define HVM_INFO_PADDR       ((HVM_INFO_PFN << 12) + HVM_INFO_OFFSET)
>  
>  /* Maximum we can support with current vLAPIC ID mapping. */
> -#define HVM_MAX_VCPUS        128
> +#define HVM_MAX_VCPUS        512

I checked a few places where this is used, bumping the number doesn't
seem to be harmful on the surface.

Of course there is the question how many CPUs can upstream support,
I think it is still under argument at the moment.

Wei.

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