|
From: | Jason Wang |
Subject: | Re: [PATCH v4 18/19] vdpa: Add device migration blocker |
Date: | Tue, 19 Jul 2022 10:36:56 +0800 |
User-agent: | Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 |
在 2022/7/18 18:29, Eugenio Pérez 写道:
Since the vhost-vdpa device is exposing _F_LOG, adding a migration blocker if it uses CVQ. Signed-off-by: Eugenio Pérez <eperezma@redhat.com> --- include/hw/virtio/vhost-vdpa.h | 1 + hw/virtio/vhost-vdpa.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 1111d85643..d10a89303e 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -35,6 +35,7 @@ typedef struct vhost_vdpa { bool shadow_vqs_enabled; /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; + Error *migration_blocker; GPtrArray *shadow_vqs; const VhostShadowVirtqueueOps *shadow_vq_ops; void *shadow_vq_ops_opaque; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index beaaa7049a..795ed5a049 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -20,6 +20,7 @@ #include "hw/virtio/vhost-shadow-virtqueue.h" #include "hw/virtio/vhost-vdpa.h" #include "exec/address-spaces.h" +#include "migration/blocker.h" #include "qemu/cutils.h" #include "qemu/main-loop.h" #include "cpu.h" @@ -1022,6 +1023,13 @@ static bool vhost_vdpa_svqs_start(struct vhost_dev *dev) return true; }+ if (v->migration_blocker) {+ int r = migrate_add_blocker(v->migration_blocker, &err); + if (unlikely(r < 0)) { + goto err_migration_blocker; + } + } + for (i = 0; i < v->shadow_vqs->len; ++i) { VirtQueue *vq = virtio_get_queue(dev->vdev, dev->vq_index + i); VhostShadowVirtqueue *svq = g_ptr_array_index(v->shadow_vqs, i); @@ -1064,6 +1072,9 @@ err: vhost_svq_stop(svq); }+err_migration_blocker:+ error_reportf_err(err, "Cannot setup SVQ %u: ", i);
So I got this: FAILED: libqemu-x86_64-softmmu.fa.p/hw_virtio_vhost-vdpa.c.occ -m64 -mcx16 -Ilibqemu-x86_64-softmmu.fa.p -I. -I.. -Itarget/i386 -I../target/i386 -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 -I/usr/include/capstone -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /home/devel/git/qemu/linux-headers -isystem linux-headers -iquote . -iquote /home/devel/git/qemu -iquote /home/devel/git/qemu/include -iquote /home/devel/git/qemu/tcg/i386 -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -isystem../linux-headers -isystemlinux-headers -DNEED_CPU_H '-DCONFIG_TARGET="x86_64-softmmu-config-target.h"' '-DCONFIG_DEVICES="x86_64-softmmu-config-devices.h"' -MD -MQ libqemu-x86_64-softmmu.fa.p/hw_virtio_vhost-vdpa.c.o -MF libqemu-x86_64-softmmu.fa.p/hw_virtio_vhost-vdpa.c.o.d -o libqemu-x86_64-softmmu.fa.p/hw_virtio_vhost-vdpa.c.o -c ../hw/virtio/vhost-vdpa.c
../hw/virtio/vhost-vdpa.c: In function ‘vhost_vdpa_dev_start’:../hw/virtio/vhost-vdpa.c:1076:5: error: ‘i’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
1076 | error_reportf_err(err, "Cannot setup SVQ %u: ", i); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../hw/virtio/vhost-vdpa.c:1020:14: note: ‘i’ was declared here 1020 | unsigned i; | ^ cc1: all warnings being treated as errorsAnd this error is kind of duplicated with the one that is reported in label "err" above.
Thanks
+ return false; }@@ -1083,6 +1094,9 @@ static bool vhost_vdpa_svqs_stop(struct vhost_dev *dev)} }+ if (v->migration_blocker) {+ migrate_del_blocker(v->migration_blocker); + } return true; }
[Prev in Thread] | Current Thread | [Next in Thread] |