From 2efa35d34edfeca0d151de8283e52006e2c6cbd4 Mon Sep 17 00:00:00 2001 From: "Maciej S. Szmigiero" Date: Tue, 4 Mar 2025 23:03:50 +0100 Subject: [PATCH] vfio/migration: Multifd device state transfer - add support checking function MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add vfio_multifd_transfer_supported() function that tells whether the multifd device state transfer is supported. Reviewed-by: Cédric Le Goater Signed-off-by: Maciej S. Szmigiero Link: https://lore.kernel.org/qemu-devel/8ce50256f341b3d47342bb217cb5fbb2deb14639.1741124640.git.maciej.szmigiero@oracle.com Signed-off-by: Cédric Le Goater --- hw/vfio/migration-multifd.c | 6 ++++++ hw/vfio/migration-multifd.h | 2 ++ 2 files changed, 8 insertions(+) diff --git a/hw/vfio/migration-multifd.c b/hw/vfio/migration-multifd.c index fa594b33fd..79fae0b629 100644 --- a/hw/vfio/migration-multifd.c +++ b/hw/vfio/migration-multifd.c @@ -31,3 +31,9 @@ typedef struct VFIODeviceStatePacket { uint32_t flags; uint8_t data[0]; } QEMU_PACKED VFIODeviceStatePacket; + +bool vfio_multifd_transfer_supported(void) +{ + return multifd_device_state_supported() && + migrate_send_switchover_start(); +} diff --git a/hw/vfio/migration-multifd.h b/hw/vfio/migration-multifd.h index 5b221c6e16..1b60d5f67a 100644 --- a/hw/vfio/migration-multifd.h +++ b/hw/vfio/migration-multifd.h @@ -14,4 +14,6 @@ #include "hw/vfio/vfio-common.h" +bool vfio_multifd_transfer_supported(void); + #endif -- 2.30.2