From: Gerd Hoffmann <kraxel@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Blue Swirl <blauwirbel@gmail.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [sneak preview] major scsi overhaul
Date: Mon, 09 Nov 2009 14:39:24 +0100 [thread overview]
Message-ID: <4AF81B8C.5040105@redhat.com> (raw)
In-Reply-To: <4AF81670.6040500@redhat.com>
Hi,
>> Doesn't fly. Either every SCSI HBA uses QEMUSG64List (thus making this
>> aequivalent to the next option from the scsi point of view), or
>> scsi-disk would have to support both formats.
>
> A device or device set which is always 64-bit would always use
> QEMUSG64List. A device which is always 32-bit would use QEMUSG32List.
A scsi-disk can be connected to both 32-bit and 64-bit HBAs though ...
>> Question is how big the performance hit actually is and whenever we
>> are willing to accept that or not ...
>
> Probably unmeasurable, but the qemu-devel thread size will be very
> measurable so not worth it.
;)
cheers,
Gerd
next prev parent reply other threads:[~2009-11-09 13:39 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-06 23:09 [Qemu-devel] [sneak preview] major scsi overhaul Gerd Hoffmann
2009-11-07 15:22 ` Blue Swirl
2009-11-09 9:08 ` Gerd Hoffmann
2009-11-09 12:37 ` Avi Kivity
2009-11-09 13:03 ` Gerd Hoffmann
2009-11-09 13:17 ` Avi Kivity
2009-11-09 13:39 ` Gerd Hoffmann [this message]
2009-11-09 13:48 ` Avi Kivity
2009-11-09 20:38 ` Blue Swirl
2009-11-09 21:25 ` Gerd Hoffmann
2009-11-11 4:06 ` Paul Brook
2009-11-11 9:41 ` Gerd Hoffmann
2009-11-11 14:13 ` Paul Brook
2009-11-11 15:26 ` Gerd Hoffmann
2009-11-11 16:38 ` Paul Brook
2009-11-16 16:35 ` Gerd Hoffmann
2009-11-16 18:53 ` Paul Brook
2009-11-16 21:50 ` Gerd Hoffmann
2009-11-24 11:59 ` Gerd Hoffmann
2009-11-24 13:51 ` Paul Brook
2009-11-25 16:37 ` Gerd Hoffmann
2009-11-26 7:31 ` Hannes Reinecke
2009-11-26 8:25 ` Gerd Hoffmann
2009-11-26 10:57 ` Hannes Reinecke
2009-11-26 11:04 ` Gerd Hoffmann
2009-11-26 11:20 ` Hannes Reinecke
2009-11-26 14:21 ` Gerd Hoffmann
2009-11-26 14:27 ` Hannes Reinecke
2009-11-26 14:37 ` Gerd Hoffmann
2009-11-26 15:50 ` Hannes Reinecke
2009-11-27 11:08 ` Gerd Hoffmann
2009-12-02 13:47 ` Gerd Hoffmann
2009-12-07 8:28 ` Hannes Reinecke
2009-12-07 8:50 ` Gerd Hoffmann
2009-11-16 19:08 ` Ryan Harper
2009-11-16 20:40 ` Gerd Hoffmann
2009-11-16 21:45 ` Ryan Harper
2009-11-11 11:21 ` [Qemu-devel] " Gerd Hoffmann
2009-11-11 11:52 ` Hannes Reinecke
2009-11-11 13:02 ` Gerd Hoffmann
2009-11-11 13:30 ` Hannes Reinecke
2009-11-11 14:37 ` Gerd Hoffmann
2009-11-12 9:54 ` Hannes Reinecke
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