Re: [PATCH v1 01/15] mm: add zone device coherent type memory support

On 5/11/2022 9:58 PM, Alistair Popple wrote: Alex Sierra writes: [...] diff --git a/mm/rmap.c b/mm/rmap.c index fedb82371efe..d57102cd4b43 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1995,7 +1995,8 @@ void try_to_migrate(struct folio *folio, enum ttu_flags flags)

Re: [PATCH v1 01/15] mm: add zone device coherent type memory support

Alex Sierra writes: [...] > diff --git a/mm/rmap.c b/mm/rmap.c > index fedb82371efe..d57102cd4b43 100644 > --- a/mm/rmap.c > +++ b/mm/rmap.c > @@ -1995,7 +1995,8 @@ void try_to_migrate(struct folio *folio, enum ttu_flags > flags) > TTU_SYNC))) >

[PATCH v1 01/15] mm: add zone device coherent type memory support

Device memory that is cache coherent from device and CPU point of view. This is used on platforms that have an advanced system bus (like CAPI or CXL). Any page of a process can be migrated to such memory. However, no one should be allowed to pin such memory so that it can always be evicted.