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Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/e820_64.c4
-rw-r--r--arch/x86/mm/init_64.c7
2 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c
index f8b7bebb434..c617174e896 100644
--- a/arch/x86/kernel/e820_64.c
+++ b/arch/x86/kernel/e820_64.c
@@ -70,8 +70,8 @@ void __init reserve_early(unsigned long start, unsigned long end)
for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) {
r = &early_res[i];
if (end > r->start && start < r->end)
- panic("Duplicated early reservation %lx-%lx\n",
- start, end);
+ panic("Overlapping early reservations %lx-%lx to %lx-%lx\n",
+ start, end, r->start, r->end);
}
if (i >= MAX_EARLY_RES)
panic("Too many early reservations");
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index a9527264459..cc50a13ce8d 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -358,6 +358,13 @@ static void __init find_early_table_space(unsigned long end)
if (table_start == -1UL)
panic("Cannot find space for the kernel page tables");
+ /*
+ * When you have a lot of RAM like 256GB, early_table will not fit
+ * into 0x8000 range, find_e820_area() will find area after kernel
+ * bss but the table_start is not page aligned, so need to round it
+ * up to avoid overlap with bss:
+ */
+ table_start = round_up(table_start, PAGE_SIZE);
table_start >>= PAGE_SHIFT;
table_end = table_start;