Re: [Xen-devel] [RFC Patch v4 7/8] x86/hvm: bump the number of pages of shadow memory

[George Dunlap <george.dunlap@xxxxxxxxxx>]

On 12/06/2017 07:50 AM, Chao Gao wrote:
> Each vcpu of hvm guest consumes at least one shadow page. Currently, only 256
> (for hap case) pages are pre-allocated as shadow memory at beginning. It would
> run out if guest has more than 256 vcpus and guest creation fails. Bump the
> number of shadow pages to 2 * HVM_MAX_VCPUS for hap case and 8 * HVM_MAX_VCPUS
> for shadow case.
> 
> This patch won't lead to more memory consumption for the size of shadow memory
> will be adjusted via XEN_DOMCTL_SHADOW_OP_SET_ALLOCATION according to the size
> of guest memory and the number of vcpus.
> 
> Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>

Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx>

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