Re: Fw: [Bugme-new] [Bug 5117] New: Panic when accessing scsi-tapedrives with 4G-remap

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On Thu, 25 Aug 2005, Andrew Morton wrote:

> 
> 
> Begin forwarded message:
> 
> Date: Tue, 23 Aug 2005 12:53:38 -0700
> From: bugme-daemon@xxxxxxxxxxxxxxxxxxxx
> To: bugme-new@xxxxxxxxxxxxxx
> Subject: [Bugme-new] [Bug 5117] New: Panic when accessing scsi-tapedrives with 4G-remap
> 
> 
>  http://bugzilla.kernel.org/show_bug.cgi?id=5117
> 
>             Summary: Panic when accessing scsi-tapedrives with 4G-remap
>      Kernel Version: 2.6.12.5
> 
> 
> Could this purely be a highmem problem?   Is the zero-copy DMA feature of
> st.c known to work OK with x86 highmem?

It is _not_ known _not_ to work ;-) I.e., I have received neither any 
success nor any failure reports. I have not tested it because I don't have 
any machine with enough memory (and I have not hacked a kernel to use 
highmem with 512 MB of memory). I hope someone seeing this thread and 
using highmem with tape can comment on this subject.

-- 
Kai
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