> On Sep 26, 2024, at 14:46, Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> wrote: > > In the caller of map_pte(), we may modify the pvmw->pte after acquiring > the pvmw->ptl, so convert it to using pte_offset_map_rw_nolock(). At > this time, the pte_same() check is not performed after the pvmw->ptl held, > so we should get pmdval and do pmd_same() check to ensure the stability of > pvmw->pmd. > > Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx> Thanks.
