From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=43942 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OWB9B-0002YZ-85 for qemu-devel@nongnu.org; Tue, 06 Jul 2010 12:37:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OWB99-0002Qh-El for qemu-devel@nongnu.org; Tue, 06 Jul 2010 12:37:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:2787) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OWB99-0002Qc-46 for qemu-devel@nongnu.org; Tue, 06 Jul 2010 12:37:23 -0400 From: Alex Williamson Date: Tue, 06 Jul 2010 10:37:17 -0600 Message-ID: <20100706163700.7542.81367.stgit@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [PATCH] pc: Avoid registering zero sized memory List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 */