Il 15/09/2014 07:23, Fam Zheng ha scritto:
> SCSIRequest *sreq;
> size_t resp_size;
> enum SCSIXferMode mode;
> - QEMUIOVector resp_iov;
> union {
> VirtIOSCSICmdResp cmd;
> VirtIOSCSICtrlTMFResp tmf;
> @@ -68,23 +75,27 @@ static inline SCSIDevice
> *virtio_scsi_device_find(VirtIOSCSI *s, uint8_t *lun)
> static VirtIOSCSIReq *virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq)
> {
> VirtIOSCSIReq *req;
> - VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
> -
> - req = g_malloc0(sizeof(*req) + vs->cdb_size);
> + VirtIOSCSICommon *vs = (VirtIOSCSICommon *)s;
> + const size_t zero_skip = offsetof(VirtIOSCSIReq, elem)
> + + sizeof(VirtQueueElement);
>
> + req = g_slice_alloc(sizeof(*req) + vs->cdb_size);
Looks good, but why do you need to zero the union? You only need to
zero sreq, resp_size and mode, don't you (and at this point, memset
becomes superfluous)?
Paolo
