Re: [Qemu-devel] [PATCH] SCSI: Standard INQUIRY data should report HiSup flag as set.

[Paolo Bonzini <pbonzini@redhat.com>]

Il 15/09/2012 03:13, Ronnie Sahlberg ha scritto:
> QEMU as far as I know only reports LUN numbers using the modes that
> are described in SAM4.
> As such, since all LUN numbers generated by the SCSI emulation in QEMU
> follow SAM4, we should set the HiSup bit in the standard INQUIRY data
> to indicate such.
> 
> From SAM4:
>   4.6.3 LUNs overview
>   All LUN formats described in this standard are hierarchical in
>   structure even when only a single level in that hierarchy is used.
>   The HISUP bit shall be set to one in the standard INQUIRY data
>   (see SPC-4) when any LUN format described in this standard is used.
>   Non-hierarchical formats are outside the scope of this standard.
> 
> Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
> ---
>  hw/scsi-disk.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
> index 1585683..52bc062 100644
> --- a/hw/scsi-disk.c
> +++ b/hw/scsi-disk.c
> @@ -678,7 +678,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
>       * is actually implemented, but we're good enough.
>       */
>      outbuf[2] = 5;
> -    outbuf[3] = 2; /* Format 2 */
> +    outbuf[3] = 2 | 0x10; /* Format 2, HiSup */
>  
>      if (buflen > 36) {
>          outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */
> 

Applied to scsi-next branch, thanks.

Paolo