On 03/06/2013 11:36 AM, Henrik Rydberg wrote:
> Hi Yinghai,
> 
>>>> Can you get a boot log with "debug memblock=debug" from the last
>>>> successful commit point?  Are you booting EFI or BootCamp?
>>>
>>> Attached the dmesg log, booting from f763ad1 which is on top of
>>> 3.7-rc6. I am booting with EFI_STUB, straight into the kernel.
>>> The command line and modules are built in.
>>
>> will check that EFI_STUB path.
>>
>> Can you check bootloader like grub.efi ?
> 
> I checked, same story. I tried without EFI_STUB, no joy. I ran with
> and without nouveau, just in case. Without the patch, everything
> works. With the patch, nothing works, and no output at all.
> 
> With a bit of luck, I could maybe get the first lines of output using
> grub.efi, but frankly I cannot remember if that ever worked on this
> machine.
> 

A simpler one is efilinux:

https://github.com/mfleming/efilinux

	-hpa