diff options
Diffstat (limited to 'arch/x86/boot/compressed/kaslr.c')
| -rw-r--r-- | arch/x86/boot/compressed/kaslr.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c index 1485f48aeda1..36ff9f729c43 100644 --- a/arch/x86/boot/compressed/kaslr.c +++ b/arch/x86/boot/compressed/kaslr.c @@ -479,31 +479,31 @@ static unsigned long slots_fetch_random(void) return 0; } -static void process_e820_entry(struct boot_e820_entry *entry, +static void process_e820_entry(struct mem_vector *entry, unsigned long minimum, unsigned long image_size) { struct mem_vector region, overlap; struct slot_area slot_area; unsigned long start_orig, end; - struct boot_e820_entry cur_entry; + struct mem_vector cur_entry; /* On 32-bit, ignore entries entirely above our maximum. */ - if (IS_ENABLED(CONFIG_X86_32) && entry->addr >= KERNEL_IMAGE_SIZE) + if (IS_ENABLED(CONFIG_X86_32) && entry->start >= KERNEL_IMAGE_SIZE) return; /* Ignore entries entirely below our minimum. */ - if (entry->addr + entry->size < minimum) + if (entry->start + entry->size < minimum) return; /* Ignore entries above memory limit */ - end = min(entry->size + entry->addr, mem_limit); - if (entry->addr >= end) + end = min(entry->size + entry->start, mem_limit); + if (entry->start >= end) return; - cur_entry.addr = entry->addr; - cur_entry.size = end - entry->addr; + cur_entry.start = entry->start; + cur_entry.size = end - entry->start; - region.start = cur_entry.addr; + region.start = cur_entry.start; region.size = cur_entry.size; /* Give up if slot area array is full. */ @@ -518,7 +518,7 @@ static void process_e820_entry(struct boot_e820_entry *entry, region.start = ALIGN(region.start, CONFIG_PHYSICAL_ALIGN); /* Did we raise the address above this e820 region? */ - if (region.start > cur_entry.addr + cur_entry.size) + if (region.start > cur_entry.start + cur_entry.size) return; /* Reduce size by any delta from the original address. */ @@ -562,6 +562,7 @@ static void process_e820_entries(unsigned long minimum, unsigned long image_size) { int i; + struct mem_vector region; struct boot_e820_entry *entry; /* Verify potential e820 positions, appending to slots list. */ @@ -570,7 +571,9 @@ static void process_e820_entries(unsigned long minimum, /* Skip non-RAM entries. */ if (entry->type != E820_TYPE_RAM) continue; - process_e820_entry(entry, minimum, image_size); + region.start = entry->addr; + region.size = entry->size; + process_e820_entry(®ion, minimum, image_size); if (slot_area_index == MAX_SLOT_AREA) { debug_putstr("Aborted e820 scan (slot_areas full)!\n"); break; |