x86: add table_top check for alloc_low_page in 64 bit
that range is from find_e820_area, so don't try to use end_pfn to see
if out of boundary...use table_top instead to avoid possible strange
result while cross the boundary...
also change early_printk to printk, because init_memory_mapping is after
early param parsing, and console=uart8250 already working at that time.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 359e3af..6eced2f 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -227,6 +227,7 @@
static unsigned long __initdata table_start;
static unsigned long __meminitdata table_end;
+static unsigned long __meminitdata table_top;
static __meminit void *alloc_low_page(unsigned long *phys)
{
@@ -240,7 +241,7 @@
return adr;
}
- if (pfn >= end_pfn)
+ if (pfn >= table_top)
panic("alloc_low_page: ran out of memory");
adr = early_ioremap(pfn * PAGE_SIZE, PAGE_SIZE);
@@ -372,10 +373,10 @@
table_start >>= PAGE_SHIFT;
table_end = table_start;
+ table_top = table_start + (tables >> PAGE_SHIFT);
- early_printk("kernel direct mapping tables up to %lx @ %lx-%lx\n",
- end, table_start << PAGE_SHIFT,
- (table_start << PAGE_SHIFT) + tables);
+ printk(KERN_DEBUG "kernel direct mapping tables up to %lx @ %lx-%lx\n",
+ end, table_start << PAGE_SHIFT, table_top << PAGE_SHIFT);
}
static void __init init_gbpages(void)