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pc: Avoid registering zero sized memory 

No need to call cpu_register_physical_memory() for a zero sized area.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Alex Williamson 2010-07-06 10:37:17 -06:00 committed by Anthony Liguori
parent f077caa99c
commit bbe80adf29
1 changed files with 4 additions and 2 deletions
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6
hw/pc.c
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@ -916,8 +916,10 @@ void pc_memory_init(ram_addr_t ram_size,
below_4g_mem_size - 0x100000,
ram_addr + 0x100000);
#if TARGET_PHYS_ADDR_BITS > 32
cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size,
ram_addr + below_4g_mem_size);
if (above_4g_mem_size > 0) {
cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size,
ram_addr + below_4g_mem_size);
}
#endif
/* BIOS load */