diff options
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/pgtable-book3s64.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 12 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable-book3s64.c b/arch/powerpc/mm/pgtable-book3s64.c index 7328886bca4c..f4f437cbabf1 100644 --- a/arch/powerpc/mm/pgtable-book3s64.c +++ b/arch/powerpc/mm/pgtable-book3s64.c @@ -116,3 +116,12 @@ void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, return; } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ + +/* For use by kexec */ +void mmu_cleanup_all(void) +{ + if (radix_enabled()) + radix__mmu_cleanup_all(); + else if (mmu_hash_ops.hpte_clear_all) + mmu_hash_ops.hpte_clear_all(); +} diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 8f086352e421..ed7bddc456b7 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -396,6 +396,18 @@ void radix__early_init_mmu_secondary(void) } } +void radix__mmu_cleanup_all(void) +{ + unsigned long lpcr; + + if (!firmware_has_feature(FW_FEATURE_LPAR)) { + lpcr = mfspr(SPRN_LPCR); + mtspr(SPRN_LPCR, lpcr & ~LPCR_UPRT); + mtspr(SPRN_PTCR, 0); + radix__flush_tlb_all(); + } +} + void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base, phys_addr_t first_memblock_size) { |