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From fa4e13a01ecc316cc43c1f39490330b94c910bc1 Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Mon, 14 Dec 2020 18:29:49 -0500
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Subject: [PATCH 04/14] s390x/s390-virtio-ccw: Reset PCI devices during
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subsystem reset
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RH-Author: Thomas Huth <thuth@redhat.com>
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Message-id: <20201214182949.35712-2-thuth@redhat.com>
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Patchwork-id: 100440
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O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/1] s390x/s390-virtio-ccw: Reset PCI devices during subsystem reset
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Bugzilla: 1905386
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RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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From: Matthew Rosato <mjrosato@linux.ibm.com>
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Currently, a subsystem reset event leaves PCI devices enabled, causing
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issues post-reset in the guest (an example would be after a kexec). These
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devices need to be reset during a subsystem reset, allowing them to be
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properly re-enabled afterwards. Add the S390 PCI host bridge to the list
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of qdevs to be reset during subsystem reset.
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Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
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Reviewed-by: Eric Farman <farman@linux.ibm.com>
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Acked-by: Halil Pasic <pasic@linux.ibm.com>
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Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
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Cc: qemu-stable@nongnu.org
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Message-Id: <1602767767-32713-1-git-send-email-mjrosato@linux.ibm.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit db08244a3a7ec312dfed3fd9b88e114281215458)
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/s390x/s390-virtio-ccw.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
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index 5905d2b7adc..5b3d07f55c4 100644
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--- a/hw/s390x/s390-virtio-ccw.c
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+++ b/hw/s390x/s390-virtio-ccw.c
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@@ -103,6 +103,7 @@ static const char *const reset_dev_types[] = {
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"s390-sclp-event-facility",
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"s390-flic",
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"diag288",
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+ TYPE_S390_PCI_HOST_BRIDGE,
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};
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static void subsystem_reset(void)
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--
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2.27.0
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