From: mohun106@gmail.com (mohun106 at gmail.com)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 0/2] arm64: Add support for 48-bit Physical Addresses
Date: Wed, 27 Nov 2013 13:04:23 +0530 [thread overview]
Message-ID: <1385537665-5909-1-git-send-email-mohun106@gmail.com> (raw)
From: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>
This patch series provides an implementation of supporting 48-bit
Physical Addresses for ARMv8 platforms. It is the maximum width that
any ARMv8 based processor can support.
The implementation extends the existing support of 40-bit PA.The kernel
and user space will now be able to access 128TB each. With 4KB page size
the Linux now will be using 4 levels of page tables by making use of
'pud'. And with 64KB page size the Linux will be using 3 levels of page
tables.
The code has been tested with LTP.
Radha Mohan Chintakuntla (2):
arm64: Add support for 48-bit Physical Addresses
arm64: Add 48-bit PA support for 64KB page size
arch/arm64/include/asm/memory.h | 6 +--
arch/arm64/include/asm/page.h | 4 +-
arch/arm64/include/asm/pgalloc.h | 20 ++++++-
arch/arm64/include/asm/pgtable-3level-hwdef.h | 34 ++++++++++++
arch/arm64/include/asm/pgtable-4level-hwdef.h | 57 ++++++++++++++++++++
arch/arm64/include/asm/pgtable-4level-types.h | 71 +++++++++++++++++++++++++
arch/arm64/include/asm/pgtable-hwdef.h | 9 ++--
arch/arm64/include/asm/pgtable.h | 50 +++++++++++++++---
arch/arm64/include/asm/tlb.h | 2 -
arch/arm64/kernel/head.S | 55 +++++++++++++++++--
arch/arm64/kernel/traps.c | 7 +++
arch/arm64/mm/proc.S | 2 +-
12 files changed, 289 insertions(+), 28 deletions(-)
create mode 100644 arch/arm64/include/asm/pgtable-4level-hwdef.h
create mode 100644 arch/arm64/include/asm/pgtable-4level-types.h
next reply other threads:[~2013-11-27 7:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-27 7:34 mohun106 at gmail.com [this message]
2013-11-27 7:34 ` [RFC PATCH 1/2] arm64: Add 48-bit PA support for 4KB page size mohun106 at gmail.com
2013-11-27 11:14 ` Mark Rutland
2013-11-27 16:00 ` Radha Mohan
2013-11-27 7:34 ` [RFC PATCH 2/2] arm64: Add 48-bit PA support for 64KB " mohun106 at gmail.com
2013-11-27 11:30 ` Mark Rutland
2013-11-27 11:04 ` [RFC PATCH 0/2] arm64: Add support for 48-bit Physical Addresses Marc Zyngier
2013-11-27 15:33 ` Radha Mohan
2013-11-27 15:50 ` Will Deacon
2013-11-27 17:59 ` Marc Zyngier
2013-11-28 2:14 ` Radha Mohan
2013-12-05 14:35 ` Radha Mohan
2013-12-05 15:10 ` Marc Zyngier
2013-12-05 17:30 ` Catalin Marinas
2013-12-10 16:53 ` Radha Mohan
2013-12-10 17:02 ` Catalin Marinas
2013-12-11 9:18 ` Radha Mohan
2013-12-05 16:53 ` Catalin Marinas
2013-11-28 9:29 ` Steve Capper
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