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

From: Chen, Rong A
Date: Wed Aug 04 2021 - 05:04:52 EST




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