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Re: [edk2] [PATCH 2/2] efinet: fix lost packets due to active MNP instan

From: Michael Chang
Subject: Re: [edk2] [PATCH 2/2] efinet: fix lost packets due to active MNP instances
Date: Wed, 22 Apr 2015 17:57:47 +0800
User-agent: Mutt/1.5.21 (2010-09-15)

On Tue, Apr 21, 2015 at 02:30:17PM +0200, Laszlo Ersek wrote:
> On 04/21/15 08:49, Michael Chang wrote:
> > On Tue, Apr 21, 2015 at 02:12:54PM +0800, Michael Chang wrote:
> >> 3. Even I can add the card open earler before hadling the dhcpv6
> >> packets, it will freeze at grub_efi_open_protocol if the option in use
> >> is GRUB_EFI_OPEN_PROTOCOL_BY_EXCLUSIVE. I was actually using
> >> GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL in the entire test and am running
> >> out of idea how to deal with that diversity.
> > For #3, I'm not trying to get the log from OVMF ..
> I guess that's "now trying", not "not trying".
> Pass
>   -debugcon file:debug.log -global isa-debugcon.iobase=0x402
> to QEMU, for saving the debug log.
> Also, the debug log mask is set in PcdDebugPrintErrorLevel in the DSC
> files. For the meaning of the individual bits, see
> "MdePkg/Include/Library/DebugLib.h".

Hi Laszlo,

Please check attachment.

debug-exclusive.log: open SNP with exclusive, IPv6 PXE booting fails in
grub2 and falls into grub rescue mode immediately. (no freeze).

debug-no-exclusive.log: open without exclusive, IPv6 PXE booting succeed
into normal mode and can see the boot menu.

I didn't see freeze this time, maybe because I rebuilt OVMF from different

The debug mask bits was set to

(added version + net to default mask).

But interestingly, I didn't see much difference in the logs, probably
debug output not really enabled ?


> Laszlo

Attachment: debug-exclusive.log
Description: Text Data

Attachment: debug-no-exclusive.log
Description: Text Data

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