diff options
Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 51 |
1 files changed, 25 insertions, 26 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 5c02fd08d6..cfd622ebf7 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -130,32 +130,41 @@ void __init mapin_ram(void) } } -void mark_initmem_nx(void) +static int __mark_initmem_nx(void) { unsigned long numpages = PFN_UP((unsigned long)_einittext) - PFN_DOWN((unsigned long)_sinittext); + int err; - mmu_mark_initmem_nx(); + err = mmu_mark_initmem_nx(); if (!v_block_mapped((unsigned long)_sinittext)) { - set_memory_nx((unsigned long)_sinittext, numpages); - set_memory_rw((unsigned long)_sinittext, numpages); + err = set_memory_nx((unsigned long)_sinittext, numpages); + if (err) + return err; + err = set_memory_rw((unsigned long)_sinittext, numpages); } + return err; +} + +void mark_initmem_nx(void) +{ + int err = __mark_initmem_nx(); + + if (err) + panic("%s() failed, err = %d\n", __func__, err); } #ifdef CONFIG_STRICT_KERNEL_RWX -void mark_rodata_ro(void) +static int __mark_rodata_ro(void) { unsigned long numpages; if (IS_ENABLED(CONFIG_STRICT_MODULE_RWX) && mmu_has_feature(MMU_FTR_HPTE_TABLE)) pr_warn("This platform has HASH MMU, STRICT_MODULE_RWX won't work\n"); - if (v_block_mapped((unsigned long)_stext + 1)) { - mmu_mark_rodata_ro(); - ptdump_check_wx(); - return; - } + if (v_block_mapped((unsigned long)_stext + 1)) + return mmu_mark_rodata_ro(); /* * mark text and rodata as read only. __end_rodata is set by @@ -165,24 +174,14 @@ void mark_rodata_ro(void) numpages = PFN_UP((unsigned long)__end_rodata) - PFN_DOWN((unsigned long)_stext); - set_memory_ro((unsigned long)_stext, numpages); - - // mark_initmem_nx() should have already run by now - ptdump_check_wx(); + return set_memory_ro((unsigned long)_stext, numpages); } -#endif -#if defined(CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC) && defined(CONFIG_DEBUG_PAGEALLOC) -void __kernel_map_pages(struct page *page, int numpages, int enable) +void mark_rodata_ro(void) { - unsigned long addr = (unsigned long)page_address(page); + int err = __mark_rodata_ro(); - if (PageHighMem(page)) - return; - - if (enable) - set_memory_p(addr, numpages); - else - set_memory_np(addr, numpages); + if (err) + panic("%s() failed, err = %d\n", __func__, err); } -#endif /* CONFIG_DEBUG_PAGEALLOC */ +#endif |