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Re: Panic on CPU 0: FATAL TRAP: vec 7, #NM[0000]
- To: Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 20 Jul 2022 15:20:34 +0200
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- Cc: Michael Young <m.a.young@xxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, ChrisD <chris@xxxxxxxxxxxx>
- Delivery-date: Wed, 20 Jul 2022 13:20:55 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 20.07.2022 13:28, Jan Beulich wrote:
> On 20.07.2022 12:02, Andrew Cooper wrote:
>> On 20/07/2022 09:19, Jan Beulich wrote:
>>> On 20.07.2022 06:48, ChrisD wrote:
>>>> So, you think it's a problem with fc36?
>>> Well, if that's where the binary came from, then yes.
>>
>> So
>> https://kojipkgs.fedoraproject.org//packages/xen/4.16.1/4.fc36/data/logs/x86_64/build.log
>> is the build log.
>>
>> For iommu_init.c I don't see anything overly concerning, although the
>> quantity of nonsense on the gcc cmdline is speaks volumes.
>>
>> One observation though. We do pass -mno-sse but not -mno-mmx.
>
> Right, but that should be no problem - the compiler isn't supposed
> to enable MMX without -mmmx.
Or so I - wrongly - thought. Will make a patch. Nevertheless I consider
gcc behavior here close to insane.
Jan
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