From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52662) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f9QtU-0004B0-Pu for qemu-devel@nongnu.org; Fri, 20 Apr 2018 03:55:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f9QtQ-0001cK-Sc for qemu-devel@nongnu.org; Fri, 20 Apr 2018 03:55:44 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:49440 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1f9QtQ-0001Zn-E8 for qemu-devel@nongnu.org; Fri, 20 Apr 2018 03:55:40 -0400 Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w3K7tXtA028750 for ; Fri, 20 Apr 2018 03:55:38 -0400 Received: from e06smtp12.uk.ibm.com (e06smtp12.uk.ibm.com [195.75.94.108]) by mx0a-001b2d01.pphosted.com with ESMTP id 2hfarwv0xj-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Fri, 20 Apr 2018 03:55:36 -0400 Received: from localhost by e06smtp12.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 20 Apr 2018 08:54:32 +0100 References: <1524054707-20663-1-git-send-email-thuth@redhat.com> <1524054707-20663-4-git-send-email-thuth@redhat.com> <2d59a139-3bdd-4b4e-882c-5cf845488eda@linux.vnet.ibm.com> <475ea222-cc03-16e4-0f50-f89cf2bfae6f@redhat.com> <0b6af02e-6e5b-76bb-a0d0-30038ad5a265@linux.vnet.ibm.com> From: Viktor VM Mihajlovski Date: Fri, 20 Apr 2018 09:54:28 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Message-Id: Subject: Re: [Qemu-devel] [qemu-s390x] [PATCH v1 for-2.13 3/4] pc-bios/s390-ccw/net: Add support for pxelinux-style config files List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Thomas Huth , Christian Borntraeger , qemu-s390x@nongnu.org Cc: Collin Walling , Cornelia Huck , qemu-devel@nongnu.org On 20.04.2018 09:36, Thomas Huth wrote: > On 20.04.2018 08:53, Viktor VM Mihajlovski wrote: >> On 19.04.2018 18:55, Thomas Huth wrote: [...] >> Well, if we don't add another identifier, and I feel reluctant about it >> as well for the reasons you wrote, we may stick with 0x1f and consider >> the additional capabilities as being optional (for special needs only). > > I tend to stay with 0x1f, since booting binaries is still the "primary" > interface (the first check for the "default" or "# " magic keywords is > not 100% reliable, since the config file could also start with another > command, and the probing of pxelinux.cfg/* files is only tried afterwards). > Good. It would be important though to define and document the best way to configure a pxelinux setup: empty bootfile name, bootfile empty (or not existent) or a special file format for the bootfile content (like 'PXE0' in EBCDIC). The former two carry the danger of accidentally enabling the pxe-style boot process. > Thomas > -- Regards, Viktor Mihajlovski