diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/boot/compressed/kaslr.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c index 016a4f48b19e..cfeb0259ed81 100644 --- a/arch/x86/boot/compressed/kaslr.c +++ b/arch/x86/boot/compressed/kaslr.c @@ -72,7 +72,7 @@ static unsigned long get_random_boot(void) return hash; } -static unsigned long get_random_long(void) +static unsigned long get_random_long(const char *purpose) { #ifdef CONFIG_X86_64 const unsigned long mix_const = 0x5d6008cbf3848dd3UL; @@ -82,7 +82,8 @@ static unsigned long get_random_long(void) unsigned long raw, random = get_random_boot(); bool use_i8254 = true; - debug_putstr("KASLR using"); + debug_putstr(purpose); + debug_putstr(" KASLR using"); if (has_cpuflag(X86_FEATURE_RDRAND)) { debug_putstr(" RDRAND"); @@ -365,7 +366,7 @@ static unsigned long slots_fetch_random(void) if (slot_max == 0) return 0; - return slots[get_random_long() % slot_max]; + return slots[get_random_long("Physical") % slot_max]; } static void process_e820_entry(struct e820entry *entry, @@ -453,7 +454,7 @@ static unsigned long find_random_virt_addr(unsigned long minimum, slots = (KERNEL_IMAGE_SIZE - minimum - image_size) / CONFIG_PHYSICAL_ALIGN + 1; - random_addr = get_random_long() % slots; + random_addr = get_random_long("Virtual") % slots; return random_addr * CONFIG_PHYSICAL_ALIGN + minimum; } |