Re: [Qemu-devel] [PATCH v3 3/4] virtio-blk-test.c: add hotplug subtest

[Gonglei (Arei)]

Hi, Amos

> -----Original Message-----
> From: Amos Kong [mailto:address@hidden
> Sent: Friday, June 06, 2014 9:12 AM
> To: address@hidden
> Cc: address@hidden; address@hidden; Gonglei (Arei)
> Subject: [PATCH v3 3/4] virtio-blk-test.c: add hotplug subtest
> 
> This patch adds a new subtest, it hotplugs 29 * 8 = 232 virtio-blk
> devices to guest, and try to hot-unplug them.
> 
> Note: the hot-unplug can't work without cooperation of guest OS.
> 
> Signed-off-by: Amos Kong <address@hidden>
> Reviewed-by: Stefan Hajnoczi <address@hidden>
> ---
>  tests/virtio-blk-test.c | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/tests/virtio-blk-test.c b/tests/virtio-blk-test.c
> index 0fdec01..7358203 100644
> --- a/tests/virtio-blk-test.c
> +++ b/tests/virtio-blk-test.c
> @@ -7,11 +7,41 @@
>   * See the COPYING file in the top-level directory.
>   */
> 
> +#include <stdio.h>
>  #include <glib.h>
>  #include <string.h>
>  #include "libqtest.h"
>  #include "qemu/osdep.h"
> 
> +static void test_blk_hotplug(void)
> +{
> +    int i, j;
> +
> +    /* start with no network/block device, slots 3~0x1f are free */
> +    qtest_start("-net none");
> +
> +    for (i = 3; i <= 0x1f; i++) {
> +        for (j = 7; j >= 0; j--) {
> +            qmp_exec_hmp_cmd("OK\r\n",
> +                             "drive_add 0
> if=none,file=/dev/null,id=drv-%x.%x",
> +                             i, j);
> +            qmp_exec_hmp_cmd("",
> +                       "device_add
> virtio-blk-pci,id=dev-%x.%x,drive=drv-%x.%x,"
> +                       "addr=0x%x.%x,multifunction=on", i, j, i, j, i, j);
> +        }
> +    }

Do the pci multifunction devices support hotplug/unplug yet?

Best regards,
-Gonglei