Re: [Xen-devel] [PATCH 3/3] xen/arm: p2m: Perform local TLB invalidation on vCPU migration

[Julien Grall <julien.grall@xxxxxxx>]

Hi Stefano,

On 03/14/2017 10:39 PM, Stefano Stabellini wrote:
> On Wed, 8 Mar 2017, Julien Grall wrote:
> > On 08/03/2017 19:48, Stefano Stabellini wrote:
> > > On Wed, 8 Mar 2017, Julien Grall wrote:
> I see your point, it is a good idea to use the remaining space in struct
> domain. The only issue is that a user could set CONFIG_NR_CPUS large
> enough to push last_vcpu_ran beyond the page boundary. I think we need
> to add a BUILD_BUG_ON(sizeof(struct domain) >= PAGE_SIZE).
There is already a BUILD_BUG_ON(sizeof(struct domain) > PAGE_SIZE) in 
alloc_domain_struct. Would it be enough for you?
Cheers,

--
Julien Grall

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