qemu-kvm/kvm-vhost-user-Fix-backends-without-multiqueue-support.patch
Miroslav Rezanina 88586bd480 * Sun Jul 25 2021 Miroslav Rezanina <mrezanin@redhat.com> - 6.0.0-10
- kvm-s390x-css-Introduce-an-ESW-struct.patch [bz#1957194]
- kvm-s390x-css-Split-out-the-IRB-sense-data.patch [bz#1957194]
- kvm-s390x-css-Refactor-IRB-construction.patch [bz#1957194]
- kvm-s390x-css-Add-passthrough-IRB.patch [bz#1957194]
- kvm-vhost-user-blk-Fail-gracefully-on-too-large-queue-si.patch [bz#1957194]
- kvm-vhost-user-blk-Make-sure-to-set-Error-on-realize-fai.patch [bz#1957194]
- kvm-vhost-user-blk-Don-t-reconnect-during-initialisation.patch [bz#1957194]
- kvm-vhost-user-blk-Improve-error-reporting-in-realize.patch [bz#1957194]
- kvm-vhost-user-blk-Get-more-feature-flags-from-vhost-dev.patch [bz#1957194]
- kvm-virtio-Fail-if-iommu_platform-is-requested-but-unsup.patch [bz#1957194]
- kvm-vhost-user-blk-Check-that-num-queues-is-supported-by.patch [bz#1957194]
- kvm-vhost-user-Fix-backends-without-multiqueue-support.patch [bz#1957194]
- kvm-file-posix-fix-max_iov-for-dev-sg-devices.patch [bz#1957194]
- kvm-scsi-generic-pass-max_segments-via-max_iov-field-in-.patch [bz#1957194]
- kvm-osdep-provide-ROUND_DOWN-macro.patch [bz#1957194]
- kvm-block-backend-align-max_transfer-to-request-alignmen.patch [bz#1957194]
- kvm-block-add-max_hw_transfer-to-BlockLimits.patch [bz#1957194]
- kvm-file-posix-try-BLKSECTGET-on-block-devices-too-do-no.patch [bz#1957194]
- kvm-block-Add-option-to-use-driver-whitelist-even-in-too.patch [bz#1957782]
- kvm-spec-Restrict-block-drivers-in-tools.patch [bz#1957782]
- kvm-Move-tools-to-separate-package.patch [bz#1972285]
- kvm-Split-qemu-pr-helper-to-separate-package.patch [bz#1972300]
- kvm-spec-RPM_BUILD_ROOT-buildroot.patch [bz#1973029]
- kvm-spec-More-use-of-name-instead-of-qemu-kvm.patch [bz#1973029]
- kvm-spec-Use-qemu-pr-helper.service-from-qemu.git.patch [bz#1973029]
- kvm-spec-Use-_sourcedir-for-referencing-sources.patch [bz#1973029]
- kvm-spec-Add-tools_only.patch [bz#1973029]
- kvm-spec-build-Add-run_configure-helper.patch [bz#1973029]
- kvm-spec-build-Disable-more-bits-with-disable_everything.patch [bz#1973029]
- kvm-spec-build-Add-macros-for-some-configure-parameters.patch [bz#1973029]
- kvm-spec-files-Move-qemu-guest-agent-and-qemu-img-earlie.patch [bz#1973029]
- kvm-spec-install-Remove-redundant-bits.patch [bz#1973029]
- kvm-spec-install-Add-modprobe_kvm_conf-macro.patch [bz#1973029]
- kvm-spec-install-Remove-qemu-guest-agent-etc-qemu-kvm-us.patch [bz#1973029]
- kvm-spec-install-clean-up-qemu-ga-section.patch [bz#1973029]
- kvm-spec-install-Use-a-single-tools_only-section.patch [bz#1973029]
- kvm-spec-Make-tools_only-not-cross-spec-sections.patch [bz#1973029]
- kvm-spec-install-Limit-time-spent-in-qemu_kvm_build.patch [bz#1973029]
- kvm-spec-misc-syntactic-merges-with-Fedora.patch [bz#1973029]
- kvm-spec-Use-Fedora-s-pattern-for-specifying-rc-version.patch [bz#1973029]
- kvm-spec-files-don-t-use-fine-grained-docs-file-list.patch [bz#1973029]
- kvm-spec-files-Add-licenses-to-qemu-common-too.patch [bz#1973029]
- kvm-spec-install-Drop-python3-shebang-fixup.patch [bz#1973029]
- Resolves: bz#1957194
  (Synchronize RHEL-AV 8.5.0 changes to RHEL 9.0.0 Beta)
- Resolves: bz#1957782
  (VMDK support should be read-only)
- Resolves: bz#1972285
  (Split out a qemu-kvm-tools subpackage)
- Resolves: bz#1972300
  (Split out a qemu-pr-helper subpackage)
- Resolves: bz#1973029
  (Spec file cleanups)
2021-07-25 22:55:18 -04:00

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Diff

From de25a5f05b76ca99299e09dabe04e7d59b9bed79 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Mon, 12 Jul 2021 10:22:32 -0400
Subject: [PATCH 12/43] vhost-user: Fix backends without multiqueue support
RH-Author: Miroslav Rezanina <mrezanin@redhat.com>
RH-Bugzilla: 1957194
dev->max_queues was never initialised for backends that don't support
VHOST_USER_PROTOCOL_F_MQ, so it would use 0 as the maximum number of
queues to check against and consequently fail for any such backend.
Set it to 1 if the backend doesn't have multiqueue support.
Fixes: c90bd505a3e8210c23d69fecab9ee6f56ec4a161
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210705171429.29286-1-kwolf@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 84affad1fd4c5251d7cccf4df43b29e9157983a9)
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
hw/virtio/vhost-user.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index ee57abe045..53f50adcba 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -1908,7 +1908,10 @@ static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque)
if (err < 0) {
return err;
}
+ } else {
+ dev->max_queues = 1;
}
+
if (dev->num_queues && dev->max_queues < dev->num_queues) {
error_report("The maximum number of queues supported by the "
"backend is %" PRIu64, dev->max_queues);
--
2.27.0