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From 8198d8d36fed85743c4d2b26aa1670f5bc3a9793 Mon Sep 17 00:00:00 2001
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From: Markus Armbruster <armbru@redhat.com>
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Date: Tue, 28 Nov 2017 13:24:17 +0100
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Subject: [PATCH 16/21] scsi: Fix onboard HBAs to pick up -drive if=scsi
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RH-Author: Markus Armbruster <armbru@redhat.com>
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Message-id: <20171128132417.18247-2-armbru@redhat.com>
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Patchwork-id: 77934
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O-Subject: [RHV-7.5 qemu-kvm-rhev PATCH v2 1/1] scsi: Fix onboard HBAs to pick up -drive if=scsi
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Bugzilla: 1497740
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
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Downstream commit 7977e6031 "scsi: Disable deprecated implicit SCSI
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HBA creation more cleanly" regressed -drive if=scsi and its sugared
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forms like -cdrom with onboard HBAs. Instead of creating SCSI devices
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connected to the onboard HBA, we reject these options like this:
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$ qemu-kvm -cdrom r7.iso
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qemu-kvm: -cdrom r7.iso: machine type does not support if=scsi,bus=0,unit=2
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The culprit is scsi_bus_legacy_handle_cmdline(): commit 7977e6031
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accidentally neutered it for the non-deprecated case (onboard SCSI
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HBA) in addition to the deprecated case (non-onboard SCSI HBA with
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legacy magic). Fix by narrowing the neutering to the deprecated case.
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/scsi/scsi-bus.c | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
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index 309daaa..404686a 100644
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--- a/hw/scsi/scsi-bus.c
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+++ b/hw/scsi/scsi-bus.c
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@@ -265,8 +265,6 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
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void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated)
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{
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-#if 0 /* Disabled for Red Hat Enterprise Linux */
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-
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Location loc;
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DriveInfo *dinfo;
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int unit;
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@@ -279,6 +277,7 @@ void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated)
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}
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qemu_opts_loc_restore(dinfo->opts);
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if (deprecated) {
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+#if 0 /* Disabled for Red Hat Enterprise Linux */
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/* Handling -drive not claimed by machine initialization */
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if (blk_get_attached_dev(blk_by_legacy_dinfo(dinfo))) {
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continue; /* claimed */
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@@ -288,12 +287,14 @@ void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated)
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" machine type",
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bus->busnr, unit);
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}
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+#else
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+ continue;
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+#endif
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}
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scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo),
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unit, false, -1, NULL, &error_fatal);
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}
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loc_pop(&loc;;
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-#endif
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}
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#if 0 /* Disabled for Red Hat Enterprise Linux */
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--
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1.8.3.1
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