linux-kernel - Re: [kbuild-all] Re: sparc64-linux-gcc: error: unrecognized command-line option '-mxsave'

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Message-ID: <8bee8632-9129-bb02-ab94-f65786e65268@intel.com>
Date:   Wed, 4 Aug 2021 17:04:38 +0800
From:   "Chen, Rong A" <rong.a.chen@...el.com>
To:     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,
        Thomas Gleixner <tglx@...utronix.de>,
        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 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.

Best Regards,
Rong Chen