We don't need to create mapping for E820_PRAM.
Signed-off-by: Yinghai Lu <ying...@kernel.org>
---
arch/x86/kernel/e820.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index a102564..46ec08d 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -753,7 +753,7 @@ u64 __init early_reserve_e820(u64 size, u64 align)
/*
* Find the highest page frame number we have available
*/
-static unsigned long __init e820_end_pfn(unsigned long limit_pfn)
+static unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned
type)
{
int i;
unsigned long last_pfn = 0;
@@ -764,11 +764,7 @@ static unsigned long __init e820_end_pfn(unsigned long
limit_pfn)
unsigned long start_pfn;
unsigned long end_pfn;
- /*
- * Persistent memory is accounted as ram for purposes of
- * establishing max_pfn and mem_map.
- */
- if (ei->type != E820_RAM && ei->type != E820_PRAM)
+ if (ei->type != type)
continue;
start_pfn = ei->addr >> PAGE_SHIFT;
@@ -793,12 +789,12 @@ static unsigned long __init e820_end_pfn(unsigned long
limit_pfn)
}
unsigned long __init e820_end_of_ram_pfn(void)
{
- return e820_end_pfn(MAX_ARCH_PFN);
+ return e820_end_pfn(MAX_ARCH_PFN, E820_RAM);
}
unsigned long __init e820_end_of_low_ram_pfn(void)
{
- return e820_end_pfn(1UL << (32-PAGE_SHIFT));
+ return e820_end_pfn(1UL<<(32 - PAGE_SHIFT), E820_RAM);
}
static void early_panic(char *msg)
--
1.8.4.5
--
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