From patchwork Tue Jul 6 16:37:17 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: pc: Avoid registering zero sized memory Date: Tue, 06 Jul 2010 06:37:17 -0000 From: Alex Williamson X-Patchwork-Id: 58047 Message-Id: <20100706163700.7542.81367.stgit@localhost.localdomain> To: qemu-devel@nongnu.org, anthony@codemonkey.ws Cc: alex.williamson@redhat.com No need to call cpu_register_physical_memory() for a zero sized area. Signed-off-by: Alex Williamson --- hw/pc.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/pc.c b/hw/pc.c index a96187f..58dea57 100644 --- a/hw/pc.c +++ b/hw/pc.c @@ -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 */