From: Thomas Huth <thuth@redhat.com>
To: qemu-s390x@nongnu.org, qemu-devel@nongnu.org
Cc: "Jason J . Herne" <jjherne@linux.ibm.com>,
Thomas Huth <thuth@redhat.com>,
Janosch Frank <frankja@linux.ibm.com>,
Cornelia Huck <cohuck@redhat.com>,
Collin Walling <walling@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>
Subject: [PATCH for-5.2 0/6] Continue booting in case the first device is not bootable
Date: Tue, 28 Jul 2020 20:37:28 +0200 [thread overview]
Message-ID: <20200728183734.7838-1-thuth@redhat.com> (raw)
If the user did not specify a "bootindex" property, the s390-ccw bios
tries to find a bootable device on its own. Unfortunately, it alwasy
stops at the very first device that it can find, no matter whether it's
bootable or not. That causes some weird behavior, for example while
qemu-system-s390x -hda bootable.qcow2
boots perfectly fine, the bios refuses to work if you just specify
a virtio-scsi controller in front of it:
qemu-system-s390x -device virtio-scsi -hda bootable.qcow2
Since this is quite uncomfortable and confusing for the users, and
all major firmwares on other architectures correctly boot in such
cases, too, let's also try to teach the s390-ccw bios how to boot
in such cases.
For this, we have to get rid of the various panic()s and IPL_assert()
statements at the "low-level" function and let the main code handle
the decision instead whether a boot from a device should fail or not,
so that the main code can continue searching in case it wants to.
Thomas
Thomas Huth (6):
pc-bios/s390-ccw/Makefile: Compile with -std=gnu99, -fwrapv and
-fno-common
pc-bios/s390-ccw: Move ipl-related code from main() into a separate
function
pc-bios/s390-ccw: Move the inner logic of find_subch() to a separate
function
pc-bios/s390-ccw: Do not bail out early if not finding a SCSI disk
pc-bios/s390-ccw: Scan through all boot devices if none has been
specified
pc-bios/s390-ccw: Allow booting in case the first virtio-blk disk is
bad
pc-bios/s390-ccw/Makefile | 7 +-
pc-bios/s390-ccw/bootmap.c | 34 ++++--
pc-bios/s390-ccw/main.c | 172 +++++++++++++++++++------------
pc-bios/s390-ccw/s390-ccw.h | 2 +-
pc-bios/s390-ccw/virtio-blkdev.c | 7 +-
pc-bios/s390-ccw/virtio-scsi.c | 25 +++--
pc-bios/s390-ccw/virtio-scsi.h | 2 +-
7 files changed, 157 insertions(+), 92 deletions(-)
--
2.18.1
next reply other threads:[~2020-07-28 18:38 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-28 18:37 Thomas Huth [this message]
2020-07-28 18:37 ` [PATCH for-5.2 1/6] pc-bios/s390-ccw/Makefile: Compile with -std=gnu99, -fwrapv and -fno-common Thomas Huth
2020-07-29 8:00 ` Claudio Imbrenda
2020-07-29 8:34 ` Cornelia Huck
2020-07-31 7:46 ` Janosch Frank
2020-07-31 7:51 ` Thomas Huth
2020-07-28 18:37 ` [PATCH for-5.2 2/6] pc-bios/s390-ccw: Move ipl-related code from main() into a separate function Thomas Huth
2020-07-29 8:01 ` Claudio Imbrenda
2020-07-29 8:47 ` Cornelia Huck
2020-07-29 11:05 ` Thomas Huth
2020-08-05 9:16 ` Cornelia Huck
2020-08-04 12:52 ` Janosch Frank
2020-07-28 18:37 ` [PATCH for-5.2 3/6] pc-bios/s390-ccw: Move the inner logic of find_subch() to " Thomas Huth
2020-07-29 8:54 ` Cornelia Huck
2020-07-29 11:13 ` Thomas Huth
2020-08-05 9:19 ` Cornelia Huck
2020-08-03 8:46 ` Claudio Imbrenda
2020-08-04 13:24 ` Thomas Huth
2020-08-04 15:30 ` Claudio Imbrenda
2020-08-04 13:26 ` Janosch Frank
2020-07-28 18:37 ` [PATCH for-5.2 4/6] pc-bios/s390-ccw: Do not bail out early if not finding a SCSI disk Thomas Huth
2020-07-29 10:03 ` Cornelia Huck
2020-07-28 18:37 ` [PATCH for-5.2 5/6] pc-bios/s390-ccw: Scan through all boot devices if none has been specified Thomas Huth
2020-08-04 11:06 ` Claudio Imbrenda
2020-08-05 9:36 ` Cornelia Huck
2020-08-05 9:39 ` Thomas Huth
2020-07-28 18:37 ` [PATCH for-5.2 6/6] pc-bios/s390-ccw: Allow booting in case the first virtio-blk disk is bad Thomas Huth
2020-08-05 10:04 ` Cornelia Huck
2020-08-05 10:08 ` Thomas Huth
2020-08-05 10:27 ` Cornelia Huck
2020-07-29 10:10 ` [PATCH for-5.2 0/6] Continue booting in case the first device is not bootable Cornelia Huck
2020-07-29 11:42 ` Viktor Mihajlovski
2020-07-29 17:17 ` Cornelia Huck
2020-07-30 4:39 ` Thomas Huth
2020-08-04 14:49 ` Janosch Frank
2020-08-04 15:19 ` Thomas Huth
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