| Date | Mon, 09 Dec 2013 09:31:00 -0500 | From | Rik van Riel <> | Subject | Re: [PATCH 05/18] mm: numa: Do not clear PTE for pte_numa update |
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On 12/09/2013 02:08 AM, Mel Gorman wrote: > The TLB must be flushed if the PTE is updated but change_pte_range is clearing > the PTE while marking PTEs pte_numa without necessarily flushing the TLB if it > reinserts the same entry. Without the flush, it's conceivable that two processors > have different TLBs for the same virtual address and at the very least it would > generate spurious faults. This patch only unmaps the pages in change_pte_range for > a full protection change. > > Cc: stable@vger.kernel.org > Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
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