linux-kernel - [RFC 0/2] arm64: Enable vmemmap from device memory

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Date:   Fri, 28 Jun 2019 10:14:41 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-mm@...ck.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [RFC 0/2] arm64: Enable vmemmap from device memory

This series enables vmemmap mapping allocation from device memory ranges on
arm64. Before that it enables vmemmap_populate_basepages() to accommodate
struct vmem_altmap based requests.

This series is based on linux next (next-20190613) along with v6 arm64
hot-remove series [1]. 

[1] https://lkml.org/lkml/2019/6/19/3

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will.deacon@....com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-ia64@...r.kernel.org
Cc: x86@...nel.org
Cc: linux-kernel@...r.kernel.org

Anshuman Khandual (2):
  mm/sparsemem: Add vmem_altmap support in vmemmap_populate_basepages()
  arm64/mm: Enable device memory allocation and free for vmemmap mapping

 arch/arm64/mm/mmu.c      | 57 +++++++++++++++++++++++++++++++-----------------
 arch/ia64/mm/discontig.c |  2 +-
 arch/x86/mm/init_64.c    |  4 ++--
 include/linux/mm.h       |  5 +++--
 mm/sparse-vmemmap.c      | 16 +++++++++-----
 5 files changed, 54 insertions(+), 30 deletions(-)

-- 
2.7.4