diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/init.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/setup_nx.c | 22 |
2 files changed, 22 insertions, 4 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 27ec2c23fd4..d406c523901 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -146,10 +146,6 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, use_gbpages = direct_gbpages; #endif - /* XXX: replace this with Kees' improved messages */ - if (__supported_pte_mask & _PAGE_NX) - printk(KERN_INFO "NX (Execute Disable) protection: active\n"); - /* Enable PSE if available */ if (cpu_has_pse) set_in_cr4(X86_CR4_PSE); diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c index 355818b087b..a3250aa3408 100644 --- a/arch/x86/mm/setup_nx.c +++ b/arch/x86/mm/setup_nx.c @@ -36,3 +36,25 @@ void __cpuinit x86_configure_nx(void) else __supported_pte_mask &= ~_PAGE_NX; } + +void __init x86_report_nx(void) +{ + if (!cpu_has_nx) { + printk(KERN_NOTICE "Notice: NX (Execute Disable) protection " + "missing in CPU or disabled in BIOS!\n"); + } else { +#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) + if (disable_nx) { + printk(KERN_INFO "NX (Execute Disable) protection: " + "disabled by kernel command line option\n"); + } else { + printk(KERN_INFO "NX (Execute Disable) protection: " + "active\n"); + } +#else + /* 32bit non-PAE kernel, NX cannot be used */ + printk(KERN_NOTICE "Notice: NX (Execute Disable) protection " + "cannot be enabled: non-PAE kernel!\n"); +#endif + } +} |