[Qemu-devel] Re: Breakage with local APIC routing

[Jan Kiszka]

Stefan Weil wrote:
> Johannes Schindelin schrieb:
>> Hi,
>>
>> due to the change in revision 3371 (well, at that time, CVS was used, 
>> which was no better than Subversion) installation of win64 is broken in 
>> QEmu.  The commit message reads like this:
>>
>>      Don't route PIC interrupts through the local APIC if the local 
>>      APIC config says so. By Ari Kivity.
>>
>> A bit of research showed that the patch was actually originally from Qing 
>> He, but he told me privately that the part that actually broke win64 (the 
>> removal of the call to cpu_reset_interrupt(), as opposed to moving that 
>> call into the "else" condition) was not part of his patch.
>>
>> Unfortunately, a lot has been done to the APIC handling in the meantime, 
>> so it is not a simple matter of a revert.
>>
>> Being a complete idiot when it comes to APICs, I have no clue how to fix 
>> the issue.
>>
>> However, I am quite willing to test whatever patch is thrown at me.
>>
>> Can somebody help?
>>
>> Thanks,
>> Dscho
> See also http://article.gmane.org/gmane.comp.emulators.qemu/24739.
> EFI BIOS is affected by the same problem.
> 

Can you describe a valid test case? I quickly tried
http://bellard.org/qemu/efi-bios.tar.bz2 with qemu revision #3370, but I
only get "Trying to execute code outside RAM or ROM at 0x000a0000".

Jan

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