On Mon, Sep 07, 2020 at 05:35:26AM +0200, Philippe Mathieu-Daudé wrote:
On Thu, Sep 3, 2020 at 11:28 AM Greg Kroah-Hartman gregkh@linuxfoundation.org wrote:
On Wed, Aug 26, 2020 at 02:06:28PM -0700, Guenter Roeck wrote:
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 ?
I don't know, sorry, that would be something that Paul understands.
Paul?
Cc'ing Thomas who now maintains this.
I've queued a patch to fix this in mips-fixes.
Thomas.