Re: [PATCH v7 00/23] powerpc/8xx: Use large pages for RAM and IMMR and other improvments

2016-02-09 Thread Christophe Leroy
Le 09/02/2016 11:23, Christophe Leroy a écrit : The main purpose of this patchset is to dramatically reduce the time spent in DTLB miss handler. This is achieved by: 1/ Mapping RAM with 8M pages 2/ Mapping IMMR with a fixed 512K page Change in v7: * Don't include x_block_mapped() from compila

[PATCH v7 00/23] powerpc/8xx: Use large pages for RAM and IMMR and other improvments

2016-02-09 Thread Christophe Leroy
The main purpose of this patchset is to dramatically reduce the time spent in DTLB miss handler. This is achieved by: 1/ Mapping RAM with 8M pages 2/ Mapping IMMR with a fixed 512K page On a live running system (VoIP gateway for Air Trafic Control), over a 10 minutes period (with 277s idle), we ge