diff options
| author |   Daniel Silsby <dansilsby@gmail.com> | 2019-07-15 17:40:00 -0400 |
|---|---|---|
| committer |   Paul Burton <paul.burton@mips.com> | 2019-07-21 14:30:05 -0700 |
| commit | 35476311e5292ae0ef00dde5c2cccbe8514660c2 (patch) | |
| tree | 863d816617c01df4e798377b2e635d2ebc7a88ae /arch/mips/include/asm/pgtable-bits.h | |
| parent | MIPS: Disallow CPU_SUPPORTS_HUGEPAGES for XPA,EVA (diff) | |
| download | wireguard-linux-35476311e5292ae0ef00dde5c2cccbe8514660c2.tar.xz wireguard-linux-35476311e5292ae0ef00dde5c2cccbe8514660c2.zip | |
MIPS: Add partial 32-bit huge page support
This adds initial support for huge pages to 32-bit MIPS systems.
Systems with extended addressing enabled (EVA,XPA,Alchemy/Netlogic)
are not yet supported.
With huge pages enabled, this implementation will increase page table
memory overhead to match that of a 64-bit MIPS system. However, the
cache-friendliness of page table walks is not affected significantly.
Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: od@zcrc.me
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Diffstat (limited to 'arch/mips/include/asm/pgtable-bits.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable-bits.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/include/asm/pgtable-bits.h b/arch/mips/include/asm/pgtable-bits.h index f88a48cd68b2..f3b1efd23f21 100644 --- a/arch/mips/include/asm/pgtable-bits.h +++ b/arch/mips/include/asm/pgtable-bits.h @@ -110,7 +110,7 @@ enum pgtable_bits { _PAGE_WRITE_SHIFT, _PAGE_ACCESSED_SHIFT, _PAGE_MODIFIED_SHIFT, -#if defined(CONFIG_64BIT) && defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) +#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) _PAGE_HUGE_SHIFT, #endif @@ -132,7 +132,7 @@ enum pgtable_bits { #define _PAGE_WRITE (1 << _PAGE_WRITE_SHIFT) #define _PAGE_ACCESSED (1 << _PAGE_ACCESSED_SHIFT) #define _PAGE_MODIFIED (1 << _PAGE_MODIFIED_SHIFT) -#if defined(CONFIG_64BIT) && defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) +#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) # define _PAGE_HUGE (1 << _PAGE_HUGE_SHIFT) #endif |