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Message-ID: <277810e0-3887-f5d4-a150-60fdb1626e60@intel.com>
Date: Mon, 9 Aug 2021 09:54:15 +0800
From: "Chen, Rong A" <rong.a.chen@...el.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Dave Hansen <dave.hansen@...el.com>,
kernel test robot <lkp@...el.com>,
Dave Hansen <dave.hansen@...ux.intel.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [kbuild-all] Re: sparc64-linux-gcc: error: unrecognized
command-line option '-mxsave'
On 8/6/2021 8:42 PM, Thomas Gleixner wrote:
> On Wed, Aug 04 2021 at 17:04, Rong A. Chen wrote:
>> On 7/27/2021 10:52 PM, Dave Hansen wrote:
>>> On 7/26/21 8:11 PM, kernel test robot wrote:
>>>>>> sparc64-linux-gcc: error: unrecognized command-line option '-mxsave'
>>>
>>> Is there something else funky going on here? All of the "-mxsave" flags
>>> that I can find are under checks for x86 builds, like:
>>>
>>> ifeq ($(CAN_BUILD_I386),1)
>>> $(BINARIES_32): CFLAGS += -m32 -mxsave
>>> ..
>>>
>>> I'm confused how we could have a sparc64 compiler (and only a sparc64
>>> compiler) that would end up with "-mxsave" in CFLAGS.
>>
>> Hi Dave,
>>
>> We can reproduce the error and have no idea too, but we have disabled
>> the test for selftests on non-x86 arch.
>
> This smells like a host/target compiler mixup. Can you please make the
> kernel build verbose with 'V=1' and provide the full build output?
Hi Thomas,
I run the below command:
$make V=1 --keep-going CROSS_COMPILE=sparc64-linux- -j1 O=build_dir
ARCH=sparc64 -C tools/testing/selftests/vm
...
sparc64-linux-gcc -Wall -I ../../../../usr/include -no-pie -m32 -mxsave
protection_keys.c -lrt -lpthread -lrt -ldl -lm -o
/root/linux/tools/testing/selftests/vm/protection_keys_32
sparc64-linux-gcc: error: unrecognized command-line option '-mxsave'
make: *** [Makefile:107:
/root/linux/tools/testing/selftests/vm/protection_keys_32] Error 1
sparc64-linux-gcc -Wall -I ../../../../usr/include -no-pie -m64 -mxsave
protection_keys.c -lrt -lpthread -lrt -ldl -o
/root/linux/tools/testing/selftests/vm/protection_keys_64
sparc64-linux-gcc: error: unrecognized command-line option '-mxsave'
make: *** [Makefile:115:
/root/linux/tools/testing/selftests/vm/protection_keys_64] Error 1
and I attached the full build output for your reference.
Best Regards,
Rong Chen
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