From d1028f1b5b4cf83e8af5f48996cf392fb12d391a Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Wed, 12 Feb 2014 16:17:35 +0100 Subject: [PATCH] s390-ccw.img: Fix sporadic reboot hangs: Initialize next_idx The current code does not initialize next_idx in the virtio ring. As the ccw bios will always use guest memory at a fixed location, this queue might != 0 after a reboot. Lets make the initialization explicit. Signed-off-by: Christian Borntraeger Reviewed-by: Cornelia Huck --- pc-bios/s390-ccw/virtio.c | 1 + 1 file changed, 1 insertion(+) diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c index 4d6e48f..a46914d 100644 --- a/pc-bios/s390-ccw/virtio.c +++ b/pc-bios/s390-ccw/virtio.c @@ -124,6 +124,7 @@ static void vring_init(struct vring *vr, unsigned int num, void *p, vr->used->flags = VRING_USED_F_NO_NOTIFY; vr->used->idx = 0; vr->used_idx = 0; + vr->next_idx = 0; debug_print_addr("init vr", vr); } -- 2.7.4