Ira Abramov wrote:
Howdie folks,
My client needs to develop tools that communicate directly with QLA2xxx
cards. at the moment, working on regular kernels he gets the machine
stuck at times. I read somewhere that with Xen, there's a way to let the
VMs talk to the hardware directly and that will make getting unstuck a
bit easier.
Yes (not that I know the details), but that requires a machine that
supports IOMMU. Not many do.
Xen however is a bit of a chore. should/could I use KVM
instead? will it support the hardware access I need?
AFAIR, yes.
Also, somce sales guy at Qlogic told them that VMware ESX lets them do
what they need and that it is in fact the "recommended way" of developping
hardware-direct code by Qlogic. I found that extremely odd, and not
backed up by any ESX product sheets.
KVM, Xen and VMWare ESX are just different implementations of the same
technology, so it wouldn't be too surprising for me to hear that that
was the case. Then again, for a good laugh, do check out the VMWare ESX
price tag....
Recommendations are welcome.
Shachar
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