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* [PATCH v4 0/2] kvm: Use huge pages for DAX-backed files
@ 2019-12-11 21:32 Barret Rhoden
  2019-12-11 21:32 ` [PATCH v4 1/2] mm: make dev_pagemap_mapping_shift() externally visible Barret Rhoden
                   ` (2 more replies)
  0 siblings, 3 replies; 19+ messages in thread
From: Barret Rhoden @ 2019-12-11 21:32 UTC (permalink / raw)
  To: Paolo Bonzini, Dan Williams, David Hildenbrand, Dave Jiang,
	Alexander Duyck
  Cc: linux-nvdimm, x86, kvm, linux-kernel, jason.zeng

This patchset allows KVM to map huge pages for DAX-backed files.

I held previous versions in limbo while people were sorting out whether
or not DAX pages were going to remain PageReserved and how that relates
to KVM.

Now that that is sorted out (DAX pages are PageReserved, but they are
not kvm_is_reserved_pfn(), and DAX pages are considered on a
case-by-case basis for KVM), I can repost this.

v3 -> v4:
v3: https://lore.kernel.org/lkml/20190404202345.133553-1-brho@google.com/
- Rebased onto linus/master

v2 -> v3:
v2: https://lore.kernel.org/lkml/20181114215155.259978-1-brho@google.com/
- Updated Acks/Reviewed-by
- Rebased onto linux-next

v1 -> v2:
https://lore.kernel.org/lkml/20181109203921.178363-1-brho@google.com/
- Updated Acks/Reviewed-by
- Minor touchups
- Added patch to remove redundant PageReserved() check
- Rebased onto linux-next

RFC/discussion thread:
https://lore.kernel.org/lkml/20181029210716.212159-1-brho@google.com/

Barret Rhoden (2):
  mm: make dev_pagemap_mapping_shift() externally visible
  kvm: Use huge pages for DAX-backed files

 arch/x86/kvm/mmu/mmu.c | 36 ++++++++++++++++++++++++++++++++----
 include/linux/mm.h     |  3 +++
 mm/memory-failure.c    | 38 +++-----------------------------------
 mm/util.c              | 34 ++++++++++++++++++++++++++++++++++
 4 files changed, 72 insertions(+), 39 deletions(-)

-- 
2.24.0.525.g8f36a354ae-goog


^ permalink raw reply	[flat|nested] 19+ messages in thread

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Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-11 21:32 [PATCH v4 0/2] kvm: Use huge pages for DAX-backed files Barret Rhoden
2019-12-11 21:32 ` [PATCH v4 1/2] mm: make dev_pagemap_mapping_shift() externally visible Barret Rhoden
2019-12-11 21:32 ` [PATCH v4 2/2] kvm: Use huge pages for DAX-backed files Barret Rhoden
2019-12-12  0:21   ` Paolo Bonzini
2019-12-12 12:22   ` David Hildenbrand
2019-12-12 16:31     ` Barret Rhoden
2019-12-12 12:33   ` Liran Alon
2019-12-12 16:54     ` Dan Williams
2019-12-12 17:39       ` Liran Alon
2019-12-12 17:59         ` Dan Williams
2019-12-12 18:32           ` Liran Alon
2019-12-12 17:03     ` Barret Rhoden
2019-12-12 17:34   ` Sean Christopherson
2019-12-12 17:37     ` Dan Williams
2019-12-12 19:16       ` Barret Rhoden
2019-12-12 19:48         ` Dan Williams
2019-12-12 20:08           ` Barret Rhoden
2019-12-12 17:45     ` Liran Alon
2019-12-12  0:22 ` [PATCH v4 0/2] " Paolo Bonzini

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