On Fri, May 21, 2021 at 3:04 AM Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com> wrote: > > We could do MOVE_PMD with something like below? A equivalent MOVE_PUD > will be costlier which makes me wonder whether we should even support that?
Well, without USE_SPLIT_PTE_PTLOCKS the pud case would be trivial too.
But everybody uses split pte locks in practice.
I get the feeling that the rmap code might have to use
pud_lock/pmd_lock. I wonder how painful that would be.
Linus
