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(unknown [9.171.131.23]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 8 Nov 2024 12:16:38 +0000 (GMT) X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on lists.libvirt.org X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,RCVD_IN_VALIDITY_RPBL_BLOCKED, RCVD_IN_VALIDITY_SAFE_BLOCKED,SPF_HELO_NONE autolearn=unavailable autolearn_force=no version=3.4.4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=HODpbgUF9z9BqtzCf WXFKuw2y5H8tIFKbM5Yy+JgMFc=; b=jov/2hzq+MdZgyaZP+gS3MHx5zQj5BkIh GO3dLMTRf+2K0AKsSwGpD3RYUDxPt+Wjj34AoFEoJ4yjFgQr+dhpUGtvqcZpRmtN L+NTRbt6xx+kG+tG01zSAoH/Z5imSxuAgGUoAiZs8+AoIheY3qIJzRCrHbsZHx3j MUxMXN9C/OmwYcgdHP10Rcyw1o+LS3ZEupmEzaNPvCkO1yfWpJKh+tYgjwDP4Eww u849hN6KMrupSoZH3Uq5Oh83AoocaPiIBmLuK/AATxsRX/k2I7ayMKr7aw8ZMXa3 zvRtuDV2EHZwgiC6KoI1JxFusKLBlcij4ogHKBZJRv2N68xZArzJg== From: Boris Fiuczynski To: devel@lists.libvirt.org Subject: [PATCH v2 4/4] NEWS: qemu: add multi boot device support on s390x Date: Fri, 8 Nov 2024 13:16:37 +0100 Message-ID: <20241108121637.74628-5-fiuczy@linux.ibm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241108121637.74628-1-fiuczy@linux.ibm.com> References: <20241108121637.74628-1-fiuczy@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: fw8oIPIlSD_pv1hvzMO76Up9FWfSPEKr X-Proofpoint-GUID: fw8oIPIlSD_pv1hvzMO76Up9FWfSPEKr X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 priorityscore=1501 phishscore=0 suspectscore=0 mlxscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=857 impostorscore=0 clxscore=1015 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411080095 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: 3Q3KZUHHE2T2CJPNTDGWIMW6OIU3K7TC X-Message-ID-Hash: 3Q3KZUHHE2T2CJPNTDGWIMW6OIU3K7TC X-MailFrom: fiuczy@linux.ibm.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-config-1; header-match-config-2; header-match-config-3; header-match-devel.lists.libvirt.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header CC: thuth@redhat.com, jrossi@linux.ibm.com, shalini@linux.ibm.com, mhartmay@linux.ibm.com, pkrempa@redhat.com X-Mailman-Version: 3.2.2 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1731068234117116600 Content-Type: text/plain; charset="utf-8" Signed-off-by: Boris Fiuczynski --- NEWS.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index 34028d59aa..b79f1d0245 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -17,6 +17,22 @@ v10.10.0 (unreleased) =20 * **New features** =20 + * qemu: add multi boot device support on s390x + + For classical mainframe guests (i.e. LPAR or z/VM installations), you al= ways + have to explicitly specify the disk where you want to boot from (or "IPL" + from, in s390x-speak -- IPL means "Initial Program Load"). + + In the past QEMU only used the first device in the boot order to IPL fro= m. + With the new multi boot device support on s390x that is available with Q= EMU + version 9.2 and newer, this limitation is lifted. If the IPL fails for t= he + first device with the lowest boot index, the device with the second lowe= st + boot index will be tried and so on until IPL is successful or there are = no + remaining boot devices to try. + + Limitation: The s390x BIOS will try to IPL up to 8 total devices, any nu= mber + of which may be disks or network devices. + * **Improvements** =20 * **Bug fixes** --=20 2.45.0