Re: [kvm PATCH v4 0/2] use vmalloc to allocate vmx vcpus

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On Mon, Oct 29, 2018 at 9:48 AM, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
> On Mon, Oct 29, 2018 at 09:25:05AM -0700, Jim Mattson wrote:
>> On Sun, Oct 28, 2018 at 6:58 PM, Wanpeng Li <kernellwp@xxxxxxxxx> wrote:
>> > We have not yet encounter memory is too fragmented to allocate kvm
>> > related metadata in our overcommit pools, is this true requirement
>> > from the product environments?
>>
>> Yes.
>
> Are your logs granular enough to determine if turning this into an
> order-2 allocation (by splitting out "struct fpu" allocations) will be
> sufficient to resolve your problem, or do we need to turn it into an
> order-1 or vmalloc allocation to achieve your production goals?

Turning this into an order-2 allocation should suffice.



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