diff options
Diffstat (limited to 'arch/powerpc/mm/pgtable-hash64.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable-hash64.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/powerpc/mm/pgtable-hash64.c b/arch/powerpc/mm/pgtable-hash64.c index c08d49046a96..d934de4e2b3a 100644 --- a/arch/powerpc/mm/pgtable-hash64.c +++ b/arch/powerpc/mm/pgtable-hash64.c @@ -112,9 +112,16 @@ int __meminit hash__vmemmap_create_mapping(unsigned long start, unsigned long page_size, unsigned long phys) { - int rc = htab_bolt_mapping(start, start + page_size, phys, - pgprot_val(PAGE_KERNEL), - mmu_vmemmap_psize, mmu_kernel_ssize); + int rc; + + if ((start + page_size) >= H_VMEMMAP_END) { + pr_warn("Outisde the supported range\n"); + return -1; + } + + rc = htab_bolt_mapping(start, start + page_size, phys, + pgprot_val(PAGE_KERNEL), + mmu_vmemmap_psize, mmu_kernel_ssize); if (rc < 0) { int rc2 = htab_remove_mapping(start, start + page_size, mmu_vmemmap_psize, |