[PATCH 0/2] kvm: Use huge pages for DAX-backed files

From: Barret Rhoden <brho@google.com>
To: "Dan Williams" <dan.j.williams@intel.com>,
	"Dave Jiang" <dave.jiang@intel.com>,
	"Ross Zwisler" <zwisler@kernel.org>,
	"Vishal Verma" <vishal.l.verma@intel.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@redhat.com>,
	"Borislav Petkov" <bp@alien8.de>
Cc: linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org,
	"H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, kvm@vger.kernel.org, yu.c.zhang@intel.com,
	yi.z.zhang@intel.com
Subject: [PATCH 0/2] kvm: Use huge pages for DAX-backed files
Date: Fri,  9 Nov 2018 15:39:19 -0500	[thread overview]
Message-ID: <20181109203921.178363-1-brho@google.com> (raw)

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@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.c  | 34 ++++++++++++++++++++++++++++++++--
 include/linux/mm.h  |  3 +++
 mm/memory-failure.c | 38 +++-----------------------------------
 mm/util.c           | 34 ++++++++++++++++++++++++++++++++++
 4 files changed, 72 insertions(+), 37 deletions(-)

-- 
2.19.1.930.g4563a0d9d0-goog