Am 08.07.2014 10:16, schrieb Konstantin Khlebnikov:
> On Tue, Jul 8, 2014 at 12:01 PM, Richard Weinberger
> <richard.weinber...@gmail.com> wrote:
>> On Tue, Jul 8, 2014 at 7:48 AM, Konstantin Khlebnikov <koc...@gmail.com>
>> wrote:
>>> On Tue, Jul 8, 2014 at 2:05 AM, Andrew Morton <a...@linux-foundation.org>
>>> wrote:
>>>> On Sat, 05 Jul 2014 15:22:38 +0400 Konstantin Khlebnikov
>>>> <koc...@gmail.com> wrote:
>>>>
>>>>> This fixes command # make checkstack for i386/x86_64.
>>>>> Looks like $UTS_MACHINE is exactly what scripts/checkstack.pl needs.
>>>>>
>>>>> By default $UTS_MACHINE is equal to $ARCH, but some arch/${ARCH}/Makefile
>>>>> overrides it. This patch updates it also in arch/x86/Makefile.um
>>>>>
>>>>> broken in ffee0de ("x86: Default to ARCH=x86 to avoid overriding
>>>>> CONFIG_64BIT")
>>>>
>>>> The changelog doesn't describe the bug which is being fixed. It should
>>>> do so please. If there are any compiler/make error messages then those
>>>> should be included.
>>>>
>>>
>>> Oh, ok. checkstalk.pl needs either i386 or x86_64, x86 isn't enough.
>>>
>>> $ make checkstack
>>> objdump -d vmlinux $(find . -name '*.ko') | \
>>> perl /home/blind/src/linux-stable/scripts/checkstack.pl x86
>>> wrong or unknown architecture "x86"
>>
>> And now we need ARCH, SUBARCH and UTS_MACHINE on UML? :-(
>
> Nope UTS_MACHINE is autodetected, see hunk Makefile.x86 in my patch.
>
> I thought about cleaning this part of UML.
> For example we could move arch/x86/um into arch/um/x86 and use # make
> ARCH=um/x86
No way. We moved the x86 stuff to arch/x86/ a few Years ago by design.
> after collecting this stuff together it woud be easier to get rid of
> forever-broken parts.
> As I see UML has been designed to work everywhere but SMP seem never worked
> as well as any host os except of linux or other arch except x86.
Currently UML runs only on x86_32/64.
Adding/fixing SMP support should be doable.
Thanks,
//richard
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