diff options
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 20 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 37 |
2 files changed, 34 insertions, 23 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 69fa01e02b63..a386bd854b1c 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -1848,16 +1848,22 @@ void hash__setup_initial_memory_limit(phys_addr_t first_memblock_base, */ BUG_ON(first_memblock_base != 0); - /* On LPAR systems, the first entry is our RMA region, - * non-LPAR 64-bit hash MMU systems don't have a limitation - * on real mode access, but using the first entry works well - * enough. We also clamp it to 1G to avoid some funky things + /* + * On virtualized systems the first entry is our RMA region aka VRMA, + * non-virtualized 64-bit hash MMU systems don't have a limitation + * on real mode access. + * + * We also clamp it to 1G to avoid some funky things * such as RTAS bugs etc... */ - ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000); + if (!early_cpu_has_feature(CPU_FTR_HVMODE)) { + ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000); - /* Finally limit subsequent allocations */ - memblock_set_current_limit(ppc64_rma_size); + /* Finally limit subsequent allocations */ + memblock_set_current_limit(ppc64_rma_size); + } else { + ppc64_rma_size = ULONG_MAX; + } } #ifdef CONFIG_DEBUG_FS diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 27ccab28665b..ddf584333bcf 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -628,22 +628,27 @@ void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base, * physical on those processors */ BUG_ON(first_memblock_base != 0); - /* - * We limit the allocation that depend on ppc64_rma_size - * to first_memblock_size. We also clamp it to 1GB to - * avoid some funky things such as RTAS bugs. - * - * On radix config we really don't have a limitation - * on real mode access. But keeping it as above works - * well enough. - */ - ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000); - /* - * Finally limit subsequent allocations. We really don't want - * to limit the memblock allocations to rma_size. FIXME!! should - * we even limit at all ? - */ - memblock_set_current_limit(first_memblock_base + first_memblock_size); + + if (!early_cpu_has_feature(CPU_FTR_HVMODE)) { + /* + * We limit the allocation that depend on ppc64_rma_size + * to first_memblock_size. We also clamp it to 1GB to + * avoid some funky things such as RTAS bugs. + * + * On radix config we really don't have a limitation + * on real mode access. But keeping it as above works + * well enough. + */ + ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000); + /* + * Finally limit subsequent allocations. We really don't want + * to limit the memblock allocations to rma_size. FIXME!! should + * we even limit at all ? + */ + memblock_set_current_limit(first_memblock_base + first_memblock_size); + } else { + ppc64_rma_size = ULONG_MAX; + } } #ifdef CONFIG_MEMORY_HOTPLUG |