diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c index c1c429d00130c2a233b35f69449d5a02a9f6f2e9..03657e784fd8fbf03e851bdc6f79837361b02fdb 100644 --- a/arch/x86/kernel/machine_kexec_32.c +++ b/arch/x86/kernel/machine_kexec_32.c @@ -157,8 +157,7 @@ int machine_kexec_prepare(struct kimage *image) { int error; - if (nx_enabled) - set_pages_x(image->control_code_page, 1); + set_pages_x(image->control_code_page, 1); error = machine_kexec_alloc_page_tables(image); if (error) return error; @@ -172,8 +171,7 @@ int machine_kexec_prepare(struct kimage *image) */ void machine_kexec_cleanup(struct kimage *image) { - if (nx_enabled) - set_pages_nx(image->control_code_page, 1); + set_pages_nx(image->control_code_page, 1); machine_kexec_free_page_tables(image); } diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 09a140ca7be8b5d8693eca9b9f12fa2463f4e8fb..1d4eb93d333c125d5d33682f46ac62263bbd82ff 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -1085,12 +1085,18 @@ EXPORT_SYMBOL(set_memory_array_wb); int set_memory_x(unsigned long addr, int numpages) { + if (!(__supported_pte_mask & _PAGE_NX)) + return 0; + return change_page_attr_clear(&addr, numpages, __pgprot(_PAGE_NX), 0); } EXPORT_SYMBOL(set_memory_x); int set_memory_nx(unsigned long addr, int numpages) { + if (!(__supported_pte_mask & _PAGE_NX)) + return 0; + return change_page_attr_set(&addr, numpages, __pgprot(_PAGE_NX), 0); } EXPORT_SYMBOL(set_memory_nx);