Christophe Leroy <christophe.le...@c-s.fr> writes: > Le 17/04/2019 à 15:03, Aneesh Kumar K.V a écrit : >> Currently, our mm_context_t on book3s64 include all hash specific >> context details like slice mask and subpage protection details. We >> can skip allocating these with radix translation. This will help us to save >> 8K per mm_context with radix translation. >> >> With the patch applied we have >> >> sizeof(mm_context_t) = 136 >> sizeof(struct hash_mm_context) = 8288 >> >> Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com> >> --- >> arch/powerpc/include/asm/book3s/64/mmu-hash.h | 33 ++++++++++++- >> arch/powerpc/include/asm/book3s/64/mmu.h | 49 +++++-------------- >> arch/powerpc/kernel/setup-common.c | 6 +++ >> arch/powerpc/mm/hash_utils_64.c | 4 +- >> arch/powerpc/mm/mmu_context_book3s64.c | 16 +++++- >> 5 files changed, 68 insertions(+), 40 deletions(-) >> > > [...] > >> diff --git a/arch/powerpc/kernel/setup-common.c >> b/arch/powerpc/kernel/setup-common.c >> index a07de8608484..21b1ce200b22 100644 >> --- a/arch/powerpc/kernel/setup-common.c >> +++ b/arch/powerpc/kernel/setup-common.c >> @@ -947,6 +947,12 @@ void __init setup_arch(char **cmdline_p) >> init_mm.end_data = (unsigned long) _edata; >> init_mm.brk = klimit; >> >> +#ifdef CONFIG_PPC_MM_SLICES >> +#if defined(CONFIG_PPC_8xx) >> + init_mm.context.slb_addr_limit = DEFAULT_MAP_WINDOW; >> +#endif >> +#endif >> + > > In the previous patch, you moved the above into early_init_mmu(). Why > bringing it back here ? >
Rebase error. I see that you have sent a series to handle this. Thanks -aneesh
