[ipxe-devel] IPXE and parallels on MAC

Patel, Kalpesh, US kapatel at randomhouse.com
Fri May 2 16:41:09 UTC 2014


Did you get a chance to look at my response to this that was sent? Jest of
it was that the patch DID NOT work to resolve the condition below.


On 4/22/14 8:28 AM, "Michael Brown" <mcb30 at ipxe.org> wrote:

>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.

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