diff options
| author | ndesaulniers@google.com <ndesaulniers@google.com> | 2019-01-24 16:52:59 -0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-01-25 16:15:37 -0500 |
| commit | 10117450735c7a7c0858095fb46a860e7037cb9a (patch) | |
| tree | be11277374828541d614edf173c218dea51e5629 /drivers/gpu/drm/amd/display/dc/dc_helper.c | |
| parent | 5eeb3f62a5746bb2f6848e684b3adf61edd66778 (diff) | |
drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines
arch/x86/Makefile disables SSE and SSE2 for the whole kernel. The
AMDGPU drivers modified in this patch re-enable SSE but not SSE2. Turn
on SSE2 to support emitting double precision floating point instructions
rather than calls to non-existent (usually available from gcc_s or
compiler_rt) floating point helper routines.
Link: https://gcc.gnu.org/onlinedocs/gccint/Soft-float-library-routines.html
Link: https://github.com/ClangBuiltLinux/linux/issues/327
Cc: stable@vger.kernel.org # 4.19
Reported-by: S, Shirish <Shirish.S@amd.com>
Reported-by: Matthias Kaehlcke <mka@google.com>
Suggested-by: James Y Knight <jyknight@google.com>
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_helper.c')
0 files changed, 0 insertions, 0 deletions