Hi, This patch adds support for the HardWare Table Walker which acts as a hardware fast-path for the TLB Refill handler. The patch only allows 32-bit cores to use this feature since it has only been tested on such targets. A new kernel parameters is added, called 'nohwtw' to disable the feature and use the regular TLB refill handler. The patch is based on v3.16-rc5 Markos Chandras (5): MIPS: cpu-info: Change the cpu options variable to unsigned long long MIPS: cpu: Add new cpu option for HardWare Table Walker. MIPS: asm: Add register definitions for Hardware Table Walker MIPS: kernel: cpu-probe: Add support for the HardWare Table Walker MIPS: mm: Use the HardWare Page Table Walker if the core supports it arch/mips/include/asm/cpu-features.h | 4 ++ arch/mips/include/asm/cpu-info.h | 2 +- arch/mips/include/asm/cpu.h | 57 +++++++++++----------- arch/mips/include/asm/mipsregs.h | 44 +++++++++++++++++ arch/mips/include/asm/mmu_context.h | 10 ++++ arch/mips/include/asm/pgtable.h | 27 +++++++++++ arch/mips/kernel/cpu-probe.c | 23 +++++++++ arch/mips/kernel/proc.c | 1 + arch/mips/mm/tlb-r4k.c | 13 +++++- arch/mips/mm/tlbex.c | 91 ++++++++++++++++++++++++++++++++++++ 10 files changed, 242 insertions(+), 30 deletions(-) -- 2.0.0
