diff options
Diffstat (limited to 'arch/x86/kernel/realmode.c')
-rw-r--r-- | arch/x86/kernel/realmode.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/kernel/realmode.c b/arch/x86/kernel/realmode.c index a465775b32f..d85ac20bb4e 100644 --- a/arch/x86/kernel/realmode.c +++ b/arch/x86/kernel/realmode.c | |||
@@ -86,7 +86,21 @@ static int __init set_real_mode_permissions(void) | |||
86 | PAGE_ALIGN(real_mode_header.end) - | 86 | PAGE_ALIGN(real_mode_header.end) - |
87 | __pa(real_mode_base); | 87 | __pa(real_mode_base); |
88 | 88 | ||
89 | set_memory_x((unsigned long) real_mode_base, all_size >> PAGE_SHIFT); | 89 | size_t ro_size = |
90 | PAGE_ALIGN(real_mode_header.ro_end) - | ||
91 | __pa(real_mode_base); | ||
92 | |||
93 | size_t text_size = | ||
94 | PAGE_ALIGN(real_mode_header.ro_end) - | ||
95 | real_mode_header.text_start; | ||
96 | |||
97 | unsigned long text_start = | ||
98 | (unsigned long) __va(real_mode_header.text_start); | ||
99 | |||
100 | set_memory_nx((unsigned long) real_mode_base, all_size >> PAGE_SHIFT); | ||
101 | set_memory_ro((unsigned long) real_mode_base, ro_size >> PAGE_SHIFT); | ||
102 | set_memory_x((unsigned long) text_start, text_size >> PAGE_SHIFT); | ||
103 | |||
90 | return 0; | 104 | return 0; |
91 | } | 105 | } |
92 | 106 | ||