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Date: Thu, 26 Jun 2014 16:35:58 +0200
From: Alexander Graf <agraf@suse.de>
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Subject: Re: [Qemu-devel] [PATCH 03/10] pc-bios/s390-ccw: handle different
	sector sizes
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To: Jens Freimann <jfrei@linux.vnet.ibm.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: "Eugene (jno) Dvurechenski" <jno@linux.vnet.ibm.com>, qemu-devel@nongnu.org


On 26.06.14 16:30, Jens Freimann wrote:
> From: "Eugene (jno) Dvurechenski" <jno@linux.vnet.ibm.com>
>
> Use the virtio device's configuration to figure out the disk geometry
> and use a sector size based upon the layout.
>
> Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
> ---
>   pc-bios/s390-ccw/bootmap.c  |  3 +-
>   pc-bios/s390-ccw/s390-ccw.h |  2 +-
>   pc-bios/s390-ccw/virtio.c   | 96 ++++++++++++++++++++++++++++++++++++++++++---
>   pc-bios/s390-ccw/virtio.h   | 48 +++++++++++++++++++++++
>   4 files changed, 142 insertions(+), 7 deletions(-)
>
> diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
> index c216030..79db3c3 100644
> --- a/pc-bios/s390-ccw/bootmap.c
> +++ b/pc-bios/s390-ccw/bootmap.c
> @@ -10,6 +10,7 @@
>   
>   #include "s390-ccw.h"
>   #include "bootmap.h"
> +#include "virtio.h"
>   
>   /* #define DEBUG_FALLBACK */
>   
> @@ -238,7 +239,7 @@ int zipl_load(void)
>           goto fail;
>       }
>   
> -    ns_end = sec + SECTOR_SIZE;
> +    ns_end = sec + virtio_get_block_size();
>       for (ns = (sec + pte_len); (ns + pte_len) < ns_end; ns++) {
>           prog_table_entry = (ScsiBlockPtr *)ns;
>           if (!prog_table_entry->blockno) {
> diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h
> index fe1dd22..a2bd042 100644
> --- a/pc-bios/s390-ccw/s390-ccw.h
> +++ b/pc-bios/s390-ccw/s390-ccw.h
> @@ -130,6 +130,6 @@ static inline void yield(void)
>                     : "memory", "cc");
>   }
>   
> -#define SECTOR_SIZE 512
> +#define SECTOR_SIZE 4096

Why keep the define at all?


Alex