[ipxe-devel] IPXE and parallels on MAC

[Michael Brown]

On 18/04/14 18:37, Patel, Kalpesh, US wrote:
>> If you haven't already found the IRC channel (#ipxe on Freenode), then
>> give it a try: IRC is quite useful for interactive
>> debugging-at-a-distance.
>
> I am signed in there so if you are there then ping me, Kalpesh.

Following on from the IRC debugging session, where we found that we 
could work around the problem by disabling the check for INTEL_IRQ_TXDW 
and always unconditionally polling the TX ring:

Could you try the attached patch against a clean current iPXE tree? 
This will cause iPXE to check for "TX queue empty" alongside "TX 
descriptor written back".  In theory this should be redundant; in 
practice it might work around what currently seems to be an emulation 
bug in the VM.

Thanks,

Michael
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ipxe-intel-poll-txqe.patch
Type: text/x-patch
Size: 1039 bytes
Desc: not available
URL: <http://lists.ipxe.org/pipermail/ipxe-devel/attachments/20140422/da5415d8/attachment.bin>