Paul Burton 7b2cb64f91 MIPS: mm: Fix MIPS32 36b physical addressing (alchemy, netlogic) ...

There are 2 distinct cases in which a kernel for a MIPS32 CPU
(CONFIG_CPU_MIPS32=y) may use 64 bit physical addresses
(CONFIG_PHYS_ADDR_T_64BIT=y):

  - 36 bit physical addressing as used by RMI Alchemy & Netlogic XLP/XLR
    CPUs.

  - MIPS32r5 eXtended Physical Addressing (XPA).

These 2 cases are distinct in that they require different behaviour from
the kernel - the EntryLo registers have different formats. Until Linux
v4.1 we only supported the first case, with code conditional upon the 2
aforementioned Kconfig variables being set. Commit c5b367835c ("MIPS:
Add support for XPA.") added support for the second case, but did so by
modifying the code that existed for the first case rather than treating
the 2 cases as distinct. Since the EntryLo registers have different
formats this breaks the 36 bit Alchemy/XLP/XLR case. Fix this by
splitting the 2 cases, with XPA cases now being conditional upon
CONFIG_XPA and the non-XPA case matching the code as it existed prior to
commit c5b367835c ("MIPS: Add support for XPA.").

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reported-by: Manuel Lauss <manuel.lauss@gmail.com>
Tested-by: Manuel Lauss <manuel.lauss@gmail.com>
Fixes: c5b367835c ("MIPS: Add support for XPA.")
Cc: James Hogan <james.hogan@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: stable@vger.kernel.org # v4.1+
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13119/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2016-05-13 15:30:25 +02:00

..

c-octeon.c

MIPS: Call find_vma with the mmap_sem held

2014-06-03 22:19:09 +02:00

c-r3k.c

mips: delete non-required instances of include <linux/init.h>

2014-01-24 22:39:56 +01:00

c-r4k.c

MIPS: remove aliasing alignment if HW has antialising support

2016-05-13 14:02:16 +02:00

c-tx39.c

MIPS: tlb-r3k: Move CP0.Wired register initialisation to `tlb_init'

2015-06-21 21:52:41 +02:00

cache.c

MIPS: Sync icache & dcache in set_pte_at

2016-05-13 14:01:58 +02:00

cerr-sb1.c

MIPS: Sibyte: Fix build for SIBYTE_BW_TRACE on BCM1x55 and BCM1x80.

2013-06-21 18:07:02 +02:00

cex-gen.S

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

cex-oct.S

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

cex-sb1.S

mips: delete non-required instances of include <linux/init.h>

2014-01-24 22:39:56 +01:00

dma-default.c

MIPS: dma-default: Defend against NULL dev in massage_gfp_flags

2016-05-09 12:00:04 +02:00

extable.c

MIPS: Eleminate filenames from comments

2009-08-03 17:52:40 +01:00

fault.c

MIPS: Set trap_no field in thread_struct on exception.

2015-09-03 12:08:04 +02:00

gup.c

Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-20 19:08:56 -07:00

highmem.c

kmap_atomic_to_page() has no users, remove it

2015-11-09 15:11:24 -08:00

hugetlbpage.c

mm/hugetlb: reduce arch dependent code about huge_pmd_unshare

2015-06-24 17:49:41 -07:00

init.c

MIPS: mm: Fix MIPS32 36b physical addressing (alchemy, netlogic)

2016-05-13 15:30:25 +02:00

ioremap.c

MIPS: Replace use of phys_t with phys_addr_t.

2014-11-24 22:47:31 +01:00

Makefile

MIPS: Allow L2 prefetch to be configured via debugfs

2015-10-26 09:49:42 +01:00

mmap.c

mm: ASLR: use get_random_long()

2016-02-27 10:28:52 -08:00

page-funcs.S

MIPS: Refactor 'clear_page' and 'copy_page' functions.

2012-07-19 11:23:43 +02:00

page.c

MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT

2016-05-13 14:02:15 +02:00

pgtable-32.c

MIPS: Limit fixrange_init() to the FIXMAP region

2011-07-25 17:26:54 +01:00

pgtable-64.c

mips, thp: remove infrastructure for handling splitting PMDs

2016-01-15 17:56:32 -08:00

sc-debugfs.c

MIPS: Allow L2 prefetch to be configured via debugfs

2015-10-26 09:49:42 +01:00

sc-ip22.c

MIPS: Fix misspellings in comments.

2016-04-03 12:32:09 +02:00

sc-mips.c

MIPS: Add P6600 cases to CPU switch statements

2016-05-13 14:01:52 +02:00

sc-r5k.c

MIPS: Remove useless parentheses

2014-11-24 07:44:49 +01:00

sc-rm7k.c

mips: delete non-required instances of include <linux/init.h>

2014-01-24 22:39:56 +01:00

tlb-funcs.S

MIPS: mm: Fix broken microMIPS kernel regression.

2014-05-14 18:11:06 +02:00

tlb-r3k.c

MIPS: Retrieve ASID masks using function accepting struct cpuinfo_mips

2016-05-13 14:02:20 +02:00

tlb-r4k.c

MIPS: Retrieve ASID masks using function accepting struct cpuinfo_mips

2016-05-13 14:02:20 +02:00

tlb-r8k.c

MIPS: Retrieve ASID masks using function accepting struct cpuinfo_mips

2016-05-13 14:02:20 +02:00

tlbex-fault.S

MIPS: Don't include <asm/page.h> unnecessarily.

2012-12-28 17:04:04 +01:00

tlbex.c

MIPS: mm: Fix MIPS32 36b physical addressing (alchemy, netlogic)

2016-05-13 15:30:25 +02:00

uasm-micromips.c

MIPS: mm: Remove dead macro definitions

2015-02-20 23:42:00 +01:00

uasm-mips.c

MIPS: Loongson-3: Fast TLB refill handler

2016-05-13 14:02:15 +02:00

uasm.c

MIPS: Loongson-3: Fast TLB refill handler

2016-05-13 14:02:15 +02:00