From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Kwmdm-00085z-Ir for qemu-devel@nongnu.org; Sun, 02 Nov 2008 18:45:54 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Kwmdk-00085e-Nh for qemu-devel@nongnu.org; Sun, 02 Nov 2008 18:45:53 -0500 Received: from [199.232.76.173] (port=55014 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Kwmdk-00085a-If for qemu-devel@nongnu.org; Sun, 02 Nov 2008 18:45:52 -0500 Received: from mail.gmx.net ([213.165.64.20]:58064) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1Kwmdj-0000ma-TN for qemu-devel@nongnu.org; Sun, 02 Nov 2008 18:45:52 -0500 Message-ID: <415897ECFCCD4BBFADA9C20FB62CD1C4@FSCPC> From: "Sebastian Herbszt" References: <20081027101249.21464.57377.stgit@gleb-debian.qumranet.com.qumranet.com> <20081027101315.21464.66215.stgit@gleb-debian.qumranet.com.qumranet.com> <20081102100659.GC16809@redhat.com> In-Reply-To: <20081102100659.GC16809@redhat.com> Date: Mon, 3 Nov 2008 00:44:26 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Re: [Bochs-developers] [PATCH 5/6] Don't use unreserved memory inBIOS. Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gleb Natapov Cc: bochs-developers@lists.sourceforge.net, qemu-devel@nongnu.org Gleb Natapov wrote: > On Fri, Oct 31, 2008 at 12:12:00AM +0100, Sebastian Herbszt wrote: >> Gleb Natapov wrote: >>> diff --git a/bios/rombios.h b/bios/rombios.h >>> index f0ed88e..57b0f46 100644 >>> --- a/bios/rombios.h >>> +++ b/bios/rombios.h >>> @@ -56,7 +56,7 @@ >>> #define ACPI_DATA_SIZE 0x00010000L >>> #define PM_IO_BASE 0xb000 >>> #define SMB_IO_BASE 0xb100 >>> -#define CPU_COUNT_ADDR 0xf000 >>> +#define CPU_COUNT_ADDR 0x0500 >> >> Why did you pick 0x500? >> > Cool number, don't you think so? It is unused location in a first page. > if 0x666 is unused we can use it instead. Actually 0050h:0000h seems to be used for PRINT-SCREEN STATUS. This byte is used by the int 5h service, which is currently not implemented. The EBDA could be used here or some reserved BDA space (e.g. 0x4d0, 0x4ac). - Sebastian