Signed-off-by: John G Johnson <john.g.john...@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimts...@oracle.com> Signed-off-by: Jagannathan Raman <jag.ra...@oracle.com> --- hw/vfio/user.h | 1 + hw/vfio/user-pci.c | 4 ++++ hw/vfio/user.c | 7 ++++--- 3 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/hw/vfio/user.h b/hw/vfio/user.h index b7a9f57..52b3f89 100644 --- a/hw/vfio/user.h +++ b/hw/vfio/user.h @@ -62,6 +62,7 @@ typedef struct VFIOUserProxy { uint64_t max_bitmap; uint64_t migr_pgsize; int flags; + uint32_t wait_time; QemuCond close_cv; AioContext *ctx; QEMUBH *req_bh; diff --git a/hw/vfio/user-pci.c b/hw/vfio/user-pci.c index ee018db..5d0b224 100644 --- a/hw/vfio/user-pci.c +++ b/hw/vfio/user-pci.c @@ -43,6 +43,7 @@ struct VFIOUserPCIDevice { bool no_direct_dma; /* disable shared mem for DMA */ bool send_queued; /* all sends are queued */ bool no_post; /* all regions write are sync */ + uint32_t wait_time; /* timeout for message replies */ }; /* @@ -280,6 +281,8 @@ static void vfio_user_pci_realize(PCIDevice *pdev, Error **errp) if (udev->no_post) { proxy->flags |= VFIO_PROXY_NO_POST; } + /* user specified or 5 sec default */ + proxy->wait_time = udev->wait_time; vfio_user_validate_version(proxy, &err); if (err != NULL) { @@ -400,6 +403,7 @@ static Property vfio_user_pci_dev_properties[] = { DEFINE_PROP_BOOL("no-direct-dma", VFIOUserPCIDevice, no_direct_dma, false), DEFINE_PROP_BOOL("x-send-queued", VFIOUserPCIDevice, send_queued, false), DEFINE_PROP_BOOL("x-no-posted-writes", VFIOUserPCIDevice, no_post, false), + DEFINE_PROP_UINT32("x-msg-timeout", VFIOUserPCIDevice, wait_time, 5000), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/vfio/user.c b/hw/vfio/user.c index 9b51686..af5471b 100644 --- a/hw/vfio/user.c +++ b/hw/vfio/user.c @@ -44,7 +44,6 @@ #define VFIO_USER_MAX_REGIONS 100 #define VFIO_USER_MAX_IRQS 50 -static int wait_time = 5000; /* wait up to 5 sec for busy servers */ static IOThread *vfio_user_iothread; static void vfio_user_shutdown(VFIOUserProxy *proxy); @@ -735,7 +734,8 @@ static void vfio_user_send_wait(VFIOUserProxy *proxy, VFIOUserHdr *hdr, if (ret == 0) { while (!msg->complete) { - if (!qemu_cond_timedwait(&msg->cv, &proxy->lock, wait_time)) { + if (!qemu_cond_timedwait(&msg->cv, &proxy->lock, + proxy->wait_time)) { VFIOUserMsgQ *list; list = msg->pending ? &proxy->pending : &proxy->outgoing; @@ -778,7 +778,8 @@ static void vfio_user_wait_reqs(VFIOUserProxy *proxy) msg->type = VFIO_MSG_WAIT; proxy->last_nowait = NULL; while (!msg->complete) { - if (!qemu_cond_timedwait(&msg->cv, &proxy->lock, wait_time)) { + if (!qemu_cond_timedwait(&msg->cv, &proxy->lock, + proxy->wait_time)) { VFIOUserMsgQ *list; list = msg->pending ? &proxy->pending : &proxy->outgoing; -- 1.9.4