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Re: [Xen-devel] check-headers error in staging



>>> On 07.01.15 at 13:45, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 07/01/15 12:37, Olaf Hering wrote:
>> After upgrade to current staging, my test packages fail to build:
>>
>> [  289s] + make -j4 -k -C tools/include/xen-foreign
>> [  289s] make: Entering directory 
> `/usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign'
>> [  289s] python mkheader.py arm32 arm32.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/../.
> ./../xen/include/public/arch-arm.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/..
> /../../xen/include/public/xen.h
>> [  289s] python mkheader.py arm64 arm64.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/../.
> ./../xen/include/public/arch-arm.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/..
> /../../xen/include/public/xen.h
>> [  289s] python mkheader.py x86_32 x86_32.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/../.
> ./../xen/include/public/arch-x86/xen-x86_32.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/../.
> ./../xen/include/
>> [  289s] python mkheader.py x86_64 x86_64.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/../.
> ./../xen/include/public/arch-x86/xen-x86_64.h 
> /usr/src/packages/BUILD/xen-4.6.0.30084/non-dbg/tools/include/xen-foreign/../.
> ./../xen/include/
>> [  289s] python mkchecker.py checker.c arm32 arm64 x86_32 x86_64
>> [  289s] gcc -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer 
> -fno-strict-aliasing -Wdeclaration-after-statement -o checker checker.c
>> [  289s] ./checker > tmp.size
>> [  289s] diff -u reference.size tmp.size
>> [  289s] --- reference.size     2015-01-07 10:28:57.000000000 +0000
>> [  289s] +++ tmp.size   2015-01-07 12:28:33.564911299 +0000
>> [  289s] @@ -9,6 +9,6 @@
>> [  289s]  arch_vcpu_info            |       0       0      24      16
>> [  289s]  vcpu_time_info            |      32      32      32      32
>> [  289s]  vcpu_info                 |      48      48      64      64
>> [  289s] -arch_shared_info          |       0       0     268     280
>> [  289s] -shared_info               |    1088    1088    2584    3368
>> [  289s] +arch_shared_info          |       0       0      24      48
>> [  289s] +shared_info               |    1088    1088    2340    3136
>> [  289s]
>> [  289s] make: *** [check-headers] Error 1
>>
>>
>> this was the last successful build:
>> xen_hg_changeset Mon Dec 15 17:40:12 2014 +0000 hg: 30046:cefc36150538
>>
>> this build fails:
>> xen_hg_changeset Wed Jan 07 11:28:57 2015 +0100 hg: 30084:88d114af72d8
>>
>>
>> So it looks like something between git commites dcd8486..dd94cac causes this 
> failure.
> 
> It will be c/s dac6d3b1a "expand x86 arch_shared_info to support linear
> p2m list"
> 
> There is a shrink to the size of arch_shared_info, but was argued and
> accepted as safe to do.

So it looks like I should revert that one then, as it'll cause an
unconditional build failure in the tools part of the build afaict. Plus
it's not clear how to properly express the now variable size to the
checking logic, i.e. resolving the issue may take some time.

Jan


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