Re: [RFC PATCH v2 0/3] mm/gup: fix gup_fast with dynamic page table folding

2020-09-09 Thread Gerald Schaefer
On Tue, 8 Sep 2020 19:36:50 +0200 Gerald Schaefer wrote: [..] > > It seems now that the generalization is very well accepted so far, > apart from some apparent issues on arm. Also, merging 2 + 3 and > putting them first seems to be acceptable, so we could do that for > v3, if there are no object

Re: [RFC PATCH v2 0/3] mm/gup: fix gup_fast with dynamic page table folding

2020-09-08 Thread Gerald Schaefer
On Tue, 8 Sep 2020 07:22:39 +0200 Christophe Leroy wrote: > > > Le 07/09/2020 à 22:12, Mike Rapoport a écrit : > > On Mon, Sep 07, 2020 at 08:00:55PM +0200, Gerald Schaefer wrote: > >> This is v2 of an RFC previously discussed here: > >> https://lore.kernel.org/lkml/20200828140314.8556-1-gerald

Re: [RFC PATCH v2 0/3] mm/gup: fix gup_fast with dynamic page table folding

2020-09-07 Thread Christophe Leroy
Le 07/09/2020 à 22:12, Mike Rapoport a écrit : On Mon, Sep 07, 2020 at 08:00:55PM +0200, Gerald Schaefer wrote: This is v2 of an RFC previously discussed here: https://lore.kernel.org/lkml/20200828140314.8556-1-gerald.schae...@linux.ibm.com/ Patch 1 is a fix for a regression in gup_fast on s

Re: [RFC PATCH v2 0/3] mm/gup: fix gup_fast with dynamic page table folding

2020-09-07 Thread Christophe Leroy
Le 07/09/2020 à 20:00, Gerald Schaefer a écrit : This is v2 of an RFC previously discussed here: https://lore.kernel.org/lkml/20200828140314.8556-1-gerald.schae...@linux.ibm.com/ Patch 1 is a fix for a regression in gup_fast on s390, after our conversion to common gup_fast code. It will intro

Re: [RFC PATCH v2 0/3] mm/gup: fix gup_fast with dynamic page table folding

2020-09-07 Thread Mike Rapoport
On Mon, Sep 07, 2020 at 08:00:55PM +0200, Gerald Schaefer wrote: > This is v2 of an RFC previously discussed here: > https://lore.kernel.org/lkml/20200828140314.8556-1-gerald.schae...@linux.ibm.com/ > > Patch 1 is a fix for a regression in gup_fast on s390, after our conversion > to common gup_fas

[RFC PATCH v2 0/3] mm/gup: fix gup_fast with dynamic page table folding

2020-09-07 Thread Gerald Schaefer
This is v2 of an RFC previously discussed here: https://lore.kernel.org/lkml/20200828140314.8556-1-gerald.schae...@linux.ibm.com/ Patch 1 is a fix for a regression in gup_fast on s390, after our conversion to common gup_fast code. It will introduce special helper functions pXd_addr_end_folded(), w