Messages in this thread | | | Date | Thu, 7 May 2020 17:47:44 -0400 | From | Peter Xu <> | Subject | Re: [PATCH v2 2/3] vfio-pci: Fault mmaps to enable vma tracking |
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Hi, Alex,
On Tue, May 05, 2020 at 03:54:53PM -0600, Alex Williamson wrote: > +/* > + * Zap mmaps on open so that we can fault them in on access and therefore > + * our vma_list only tracks mappings accessed since last zap. > + */ > +static void vfio_pci_mmap_open(struct vm_area_struct *vma) > +{ > + zap_vma_ptes(vma, vma->vm_start, vma->vm_end - vma->vm_start);
A pure question: is this only a safety-belt or it is required in some known scenarios?
In all cases:
Reviewed-by: Peter Xu <peterx@redhat.com>
Thanks,
-- Peter Xu
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