[PATCH v2 0/3] kvm: Use huge pages for DAX-backed files

From: Barret Rhoden <brho-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
To: "Dan Williams"
	<dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	"Dave Jiang" <dave.jiang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	"Ross Zwisler" <zwisler-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	"Vishal Verma"
	<vishal.l.verma-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	"Paolo Bonzini"
	<pbonzini-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	"Radim Krčmář" <rkrcmar-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	"Thomas Gleixner" <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
	"Ingo Molnar" <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	"Borislav Petkov" <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
Cc: kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	yu.c.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
	linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
	x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
	yi.z.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
Subject: [PATCH v2 0/3] kvm: Use huge pages for DAX-backed files
Date: Wed, 14 Nov 2018 16:51:52 -0500	[thread overview]
Message-ID: <20181114215155.259978-1-brho@google.com> (raw)
In-Reply-To: <20181109203921.178363-1-brho-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>

This patch series depends on dax pages not being PageReserved.  Once
that is in place, these changes will let KVM use huge pages with
dax-backed files.  Without the PageReserved change, KVM and DAX still
work with these patches, simply without huge pages - which is the
current situation.

RFC/discussion thread:
https://lore.kernel.org/lkml/20181029210716.212159-1-brho-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org/

v1 -> v2:
https://lore.kernel.org/lkml/20181109203921.178363-1-brho-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org/

- Updated Acks/Reviewed-by
- Minor touchups
- Added patch to remove redundant PageReserved() check
- Rebased onto linux-next

Barret Rhoden (3):
  mm: make dev_pagemap_mapping_shift() externally visible
  kvm: Use huge pages for DAX-backed files
  kvm: remove redundant PageReserved() check

 arch/x86/kvm/mmu.c  | 33 +++++++++++++++++++++++++++++++--
 include/linux/mm.h  |  3 +++
 mm/memory-failure.c | 38 +++-----------------------------------
 mm/util.c           | 34 ++++++++++++++++++++++++++++++++++
 virt/kvm/kvm_main.c |  8 ++------
 5 files changed, 73 insertions(+), 43 deletions(-)

-- 
2.19.1.1215.g8438c0b245-goog