From 38e0735eb76a1479917ef3501a208d4f70998494 Mon Sep 17 00:00:00 2001 From: Anthony Liguori Date: Mon, 14 Nov 2011 15:09:44 -0600 Subject: ivshmem: use migration blockers to prevent live migration in peer mode (v2) Now when you try to migrate with ivshmem, you get a proper QMP error: (qemu) migrate tcp:localhost:1025 Migration is disabled when using feature 'peer mode' in device 'ivshmem' (qemu) Signed-off-by: Anthony Liguori --- hw/ivshmem.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'hw/ivshmem.c') diff --git a/hw/ivshmem.c b/hw/ivshmem.c index 242fbea3a5..a3a0e98451 100644 --- a/hw/ivshmem.c +++ b/hw/ivshmem.c @@ -18,6 +18,8 @@ #include "pci.h" #include "msix.h" #include "kvm.h" +#include "migration.h" +#include "qerror.h" #include #include @@ -78,6 +80,8 @@ typedef struct IVShmemState { uint32_t features; EventfdEntry *eventfd_table; + Error *migration_blocker; + char * shmobj; char * sizearg; char * role; @@ -646,7 +650,8 @@ static int pci_ivshmem_init(PCIDevice *dev) } if (s->role_val == IVSHMEM_PEER) { - register_device_unmigratable(&s->dev.qdev, "ivshmem", s); + error_set(&s->migration_blocker, QERR_DEVICE_FEATURE_BLOCKS_MIGRATION, "ivshmem", "peer mode"); + migrate_add_blocker(s->migration_blocker); } pci_conf = s->dev.config; @@ -741,6 +746,11 @@ static int pci_ivshmem_uninit(PCIDevice *dev) { IVShmemState *s = DO_UPCAST(IVShmemState, dev, dev); + if (s->migration_blocker) { + migrate_del_blocker(s->migration_blocker); + error_free(s->migration_blocker); + } + memory_region_destroy(&s->ivshmem_mmio); memory_region_del_subregion(&s->bar, &s->ivshmem); memory_region_destroy(&s->ivshmem); -- cgit v1.2.3