| Date | Wed, 26 Aug 2020 14:06:28 -0700 | From | Guenter Roeck <> | Subject | Re: [PATCH 4.19 66/81] MIPS: Disable Loongson MMI instructions for kernel build |
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Hi,
On Wed, Oct 16, 2019 at 02:51:17PM -0700, Greg Kroah-Hartman wrote: > From: Paul Burton <paul.burton@mips.com> > > commit 2f2b4fd674cadd8c6b40eb629e140a14db4068fd upstream. > > GCC 9.x automatically enables support for Loongson MMI instructions when > using some -march= flags, and then errors out when -msoft-float is > specified with: > > cc1: error: ‘-mloongson-mmi’ must be used with ‘-mhard-float’ > > The kernel shouldn't be using these MMI instructions anyway, just as it > doesn't use floating point instructions. Explicitly disable them in > order to fix the build with GCC 9.x. >
I still see this problem when trying to compile fuloong2e_defconfig with gcc 9.x or later. Reason seems to be that the patch was applied to arch/mips/loongson64/Platform, but fuloong2e_defconfig uses arch/mips/loongson2ef/Platform.
Am I missing something ?
Thanks, Guenter
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