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Subject[PATCH v2 00/10] s390: PG_arch_1+folio cleanups for uv+hugetlb
Date
This is v2 of [1] with changed subject:
"[PATCH v1 0/5] s390: page_mapcount(), page_has_private() and PG_arch_1"

Rebased on s390x/features which contains the page_mapcount() and
page_has_private() cleanups, and some PG_arch_1 cleanups from Willy. To
compensate, I added some more cleanups ;)

One "easy" fix upfront. Another issue I spotted is documented in [1].

Once this hits upstream, we can remove HAVE_ARCH_MAKE_PAGE_ACCESSIBLE
from core-mm and s390x, so only the folio variant will remain.

Compile tested, but not runtime tested with UV, I'll appreciate some
testing help from people with UV access and experience.

[1] https://lkml.kernel.org/r/20240404163642.1125529-1-david@redhat.com

v1 -> v2:
* Rebased on s390x/features:
* "s390/hugetlb: convert PG_arch_1 code to work on folio->flags"
-> pmd_folio() not available on s390x/features
* "s390/uv: don't call folio_wait_writeback() without a folio reference"
-> Willy's folio conversion is in s390x/features
* "s390/uv: convert PG_arch_1 users to only work on small folios"
-> Add comments
* Rearrange code and handle split_folio() return values properly. New
patches to handle splitting:
-> "s390/uv: gmap_make_secure() cleanups for further changes"
-> "s390/uv: split large folios in gmap_make_secure()"
* Added more cleanups:
-> "s390/uv: make uv_convert_from_secure() a static function"
-> "s390/uv: convert uv_destroy_owned_page() to uv_destroy_(folio|pte)()"
-> "s390/uv: convert uv_convert_owned_from_secure() to
uv_convert_from_secure_(folio|pte)()"
-> "s390/mm: implement HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE"

Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Thomas Huth <thuth@redhat.com>

David Hildenbrand (10):
s390/uv: don't call folio_wait_writeback() without a folio reference
s390/uv: gmap_make_secure() cleanups for further changes
s390/uv: split large folios in gmap_make_secure()
s390/uv: convert PG_arch_1 users to only work on small folios
s390/uv: update PG_arch_1 comment
s390/uv: make uv_convert_from_secure() a static function
s390/uv: convert uv_destroy_owned_page() to uv_destroy_(folio|pte)()
s390/uv: convert uv_convert_owned_from_secure() to
uv_convert_from_secure_(folio|pte)()
s390/uv: implement HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE
s390/hugetlb: convert PG_arch_1 code to work on folio->flags

arch/s390/include/asm/page.h | 5 +
arch/s390/include/asm/pgtable.h | 8 +-
arch/s390/include/asm/uv.h | 12 +-
arch/s390/kernel/uv.c | 207 +++++++++++++++++++++-----------
arch/s390/mm/fault.c | 14 ++-
arch/s390/mm/gmap.c | 10 +-
arch/s390/mm/hugetlbpage.c | 8 +-
7 files changed, 172 insertions(+), 92 deletions(-)

--
2.44.0


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