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| author |   Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-05-21 03:34:37 +0300 |
|---|---|---|
| committer |   Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-05-21 09:06:05 +0200 |
| commit | bbb5946eb545fab8ad8f46bce8a803e1c0c39d47 (patch) | |
| tree | 9f674052c544dabcc939b95fd39ba79ba69629db /arch/mips/mm/c-r4k.c | |
| parent | MIPS: SGI-IP27: Remove not used definition TICK_SIZE in ip27-timer.c (diff) | |
| download | linux-dev-bbb5946eb545fab8ad8f46bce8a803e1c0c39d47.tar.xz linux-dev-bbb5946eb545fab8ad8f46bce8a803e1c0c39d47.zip | |
mips: MAAR: Use more precise address mask
Indeed according to the MIPS32 Privileged Resource Architecgture the MAAR
pair register address field either takes [12:31] bits for non-XPA systems
and [12:55] otherwise. In any case the current address mask is just
wrong for 64-bit and 32-bits XPA chips. So lets extend it to 59-bits
of physical address value. This shall cover the 64-bits architecture and
systems with XPA enabled, and won't cause any problem for non-XPA 32-bit
systems, since address values exceeding the architecture specific MAAR
mask will be just truncated with setting zeros in the unsupported upper
bits.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/mm/c-r4k.c')
0 files changed, 0 insertions, 0 deletions