Re: [Xen-devel] [PATCH v2 1/2] x86/mem_sharing: reorder when pages are unlocked and released

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.04.19 at 19:51, <tamas@xxxxxxxxxxxxx> wrote:
> Simply changing to get_page with dom_cow is not enough, I ran into
> issues where the system still deadlocks due to the ordering of
> put_page_and_type being called before mem_sharing_page_unlock. So the
> ordering still has to be changed.

Dead locks because of the ordering of releases (or locks or alike),
not acquires? That looks suspicious to me, i.e. suggests yet
another problem elsewhere.

Jan



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