linux-kernel - Re: [PATCH v2] xen/events: Always allocate legacy interrupts on PV guests

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Date:	Fri, 20 Nov 2015 11:49:57 -0500
From:	Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	konrad.wilk@...cle.com, david.vrabel@...rix.com,
	linux@....linux.org.uk, stefano.stabellini@...rix.com,
	jgross@...e.com, tglx@...utronix.de, vkuznets@...hat.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xen.org, Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>
Subject: Re: [PATCH v2] xen/events: Always allocate legacy interrupts on PV
 guests

On 11/20/2015 11:33 AM, Stefano Stabellini wrote:
>>>
>>>
>>> BTW, I got this build error:
>>>
>>>     STUBCPY drivers/firmware/efi/libstub/lib-sort.stub.o
>>> 0000000000000000 R_AARCH64_ABS64   __efistub_sort
>>> 0000000000000008 R_AARCH64_ABS64   .init__ksymtab_strings
>>> drivers/firmware/efi/libstub/lib-sort.stub.o: absolute symbol references
>>> not
>>> allowed in the EFI stub
>>> drivers/firmware/efi/libstub/Makefile:63: recipe for target
>>> 'drivers/firmware/efi/libstub/lib-sort.stub.o' failed
>>> make[4]: *** [drivers/firmware/efi/libstub/lib-sort.stub.o] Error 1
>>> scripts/Makefile.build:403: recipe for target
>>> 'drivers/firmware/efi/libstub'
>>> failed
>>> make[3]: *** [drivers/firmware/efi/libstub] Error 2
>>> scripts/Makefile.build:403: recipe for target 'drivers/firmware/efi'
>>> failed
>>> make[2]: *** [drivers/firmware/efi] Error 2
>>> scripts/Makefile.build:403: recipe for target 'drivers/firmware' failed
>>> make[1]: *** [drivers/firmware] Error 2
>>> Makefile:943: recipe for target 'drivers' failed
>>> make: *** [drivers] Error 2
>>>
>>> I worked around this by removing some of EFI config options but presumably
>>> this needs to be properly fixed.
>>> Interesting. This build error could be something new. Could you please
>>> post your kernel config?
>> Attached.
>>
>> This, BTW, is on a relatively old toolstack:
>> gcc version 4.8.2 20131014 (prerelease) (crosstool-NG
>> linaro-1.13.1-4.8-2013.10 - Linaro GCC 2013.10)
> Interesting. I cannot repro the error with Linaro GCC 4.9-2014.

This does look like something toolstack-specific: I installed
     gcc version 4.8.3 20140401 (prerelease) (crosstool-NG 
linaro-1.13.1-4.8-2014.04 - Linaro GCC 4.8-2014.04)
from the link you provided above and it built without problems.

-boris

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