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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH 5/5] megasas: LSI Megaraid SAS emulation |
Date: | Wed, 06 Jul 2011 10:39:57 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc15 Mnenhy/0.8.3 Thunderbird/3.1.10 |
On 07/06/2011 08:20 AM, Hannes Reinecke wrote:
We cannot map control structures from guest memory and treating them as valid request state later on.Yes, I've been working on that one already. What I'll be doing is to read in the sge count during 'map_sgl' and store this value internally (in ->iov_cnt). And during unmap I'll be using this value instead of the frame-provided one. That way we'll be checking the sge_count field only once when we slurp in the entire frame.
Note the flags too. Perhaps it's easier to simply copy the entire frame header...
Paolo
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