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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-09-23 13:33:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 18:36:34 +0300 |
| commit | 22dd2387ee818980f3afbe2a79011f42c6b0023e (patch) | |
| tree | cdcbaa4e2b3806d0465db312796727b0e5dc4c12 /arch | |
| parent | 464b2d4cba99912810f13bdae1dd725140f8b964 (diff) | |
| download | linux-22dd2387ee818980f3afbe2a79011f42c6b0023e.tar.xz | |
MIPS: Loongson2ef: Disable Loongson MMI instructions
commit b13812ddea615b6507beef24f76540c0c1143c5c upstream.
It was missed when I was forking Loongson2ef from Loongson64 but
should be applied to Loongson2ef as march=loongson2f
will also enable Loongson MMI in GCC-9+.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Fixes: 71e2f4dd5a65 ("MIPS: Fork loongson2ef from loongson64")
Reported-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: stable@vger.kernel.org # v5.8+
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/loongson2ef/Platform | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/loongson2ef/Platform b/arch/mips/loongson2ef/Platform index cdad3c1a9a18..7db0935bda3d 100644 --- a/arch/mips/loongson2ef/Platform +++ b/arch/mips/loongson2ef/Platform @@ -22,6 +22,10 @@ ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS endif endif +# Some -march= flags enable MMI instructions, and GCC complains about that +# support being enabled alongside -msoft-float. Thus explicitly disable MMI. +cflags-y += $(call cc-option,-mno-loongson-mmi) + # # Loongson Machines' Support # |