diff options
Diffstat (limited to 'arch/powerpc/mm/tlb_nohash.c')
| -rw-r--r-- | arch/powerpc/mm/tlb_nohash.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index 7ba32e762990..a086ed562606 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -446,4 +446,18 @@ void __cpuinit early_init_mmu_secondary(void) __early_init_mmu(0); } +void setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size) +{ + /* On Embedded 64-bit, we adjust the RMA size to match + * the bolted TLB entry. We know for now that only 1G + * entries are supported though that may eventually + * change. We crop it to the size of the first MEMBLOCK to + * avoid going over total available memory just in case... + */ + ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000); + + /* Finally limit subsequent allocations */ + memblock_set_current_limit(ppc64_memblock_base + ppc64_rma_size); +} #endif /* CONFIG_PPC64 */ |