[Bug 285681] [Hyper-V] i386 panic during storvsc_xferbuf_prepare()

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285681

--- Comment #8 from Dimitry Andric <dim@FreeBSD.org> ---
(In reply to Mark Johnston from comment #7)
> Weird, I have no idea about that.  I guess we should look at the packet length in vmbus_chan_recv().  A stack trace would also be useful.

Annoyingly, I cannot reproduce it anymore. Must have been a glitch.


> But, does it happen at all with the patch in comment 3?

No, that fixes it for all memory sizes.


> The attached patch should also eliminate unnecessary bouncing on i386 systems with physical RAM above 4GB.

I applied this latest one instead, and it also boots fine with different memory
sizes.

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