don't need to reserved one round after the gapstart.
because have round up in via reserve stolen ram already.
[Impact: make more big space below 4g for assigning to unassigned pci devices]
Reported-by: Yannick <yannick.roehlly@xxxxxxx>
Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
---
arch/x86/kernel/e820.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -617,7 +617,7 @@ __init int e820_search_gap(unsigned long
*/
__init void e820_setup_gap(void)
{
- unsigned long gapstart, gapsize, round;
+ unsigned long gapstart, gapsize;
int found;
gapstart = 0x10000000;
@@ -635,14 +635,9 @@ __init void e820_setup_gap(void)
#endif
/*
- * See how much we want to round up: start off with
- * rounding to the next 1MB area.
+ * e820_reserve_resources_late protect stolen RAM already
*/
- round = 0x100000;
- while ((gapsize >> 4) > round)
- round += round;
- /* Fun with two's complement */
- pci_mem_start = (gapstart + round) & -round;
+ pci_mem_start = gapstart;
printk(KERN_INFO
"Allocating PCI resources starting at %lx (gap: %lx:%lx)\n",
--
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