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Diffstat (limited to 'arch/powerpc/platforms/cell/Kconfig')
| -rw-r--r-- | arch/powerpc/platforms/cell/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig index 82551770917..9b2b386ccf4 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -35,6 +35,21 @@ config SPU_FS Units on machines implementing the Broadband Processor Architecture. +config SPU_FS_64K_LS + bool "Use 64K pages to map SPE local store" + # we depend on PPC_MM_SLICES for now rather than selecting + # it because we depend on hugetlbfs hooks being present. We + # will fix that when the generic code has been improved to + # not require hijacking hugetlbfs hooks. + depends on SPU_FS && PPC_MM_SLICES && !PPC_64K_PAGES + default y + select PPC_HAS_HASH_64K + help + This option causes SPE local stores to be mapped in process + address spaces using 64K pages while the rest of the kernel + uses 4K pages. This can improve performances of applications + using multiple SPEs by lowering the TLB pressure on them. + config SPU_BASE bool default n |