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SubjectRe: new x86 setup code hangs on Dell Inspiron 5150
H. Peter Anvin wrote:
> Will Simoneau wrote:
>> While trying to put together a new kernel for my laptop (Dell I5150, as
>> in subject) I found that recent kernels just don't boot. Right after
>> grub loads the kernel, before the "Uncompressing Linux" message is
>> shown, it hangs. The BIOS appears to still be alive (ctrl-alt-del works,
>> keyboard lock LEDs respond). It seems to be caused by the new x86 setup
>> code.
>> My kernel is Linus' git as of a1c582d0720f2eff61043e90711767decf37b917.
>> I bisected and confirmed that 4fd06960f120e02e9abc802a09f9511c400042a5
>> triggers a non-functioning boot.
>> This system has Dell BIOS rev A38 and a P4 3.2 w/HT.
>> What should I do next to debug this problem?
> Can you put in some printf's in the code and see how far it gets?

Specifically, the places to add printf's are to main() in main.c and
go_to_protected_mode() in pm.c.

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