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Re: [Qemu-devel] SPARC iommu mapping

From: Blue Swirl
Subject: Re: [Qemu-devel] SPARC iommu mapping
Date: Tue, 11 Apr 2006 21:21:55 +0200

The attached patch is an updated version of my previous patch. Now it applies
cleanly to cvs head and the read and write performance is increased.

Great work! Now the Debian 3.0r4 installer with 2.6.11+tcx kernel almost finishes. Performance is also much better.

There is some problem with CDROM access, the files on CD look corrupt, whereas the same image used as hdb works perfectly.

Some comments on the code: Instead of adding s->bufstart, maybe you could use the s->rptr, as it is used for similar purpose for FIFO. Please add more spaces to conform to general code style.

For even better performance, you could try to avoid the memory to buffer copy and give bdrv_read pointer to host memory.

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