On Fri, Jan 25, 2019 at 10:29 AM Wentland, Harry <Harry.Wentland@xxxxxxx> wrote: > > On 2019-01-24 7:52 p.m., ndesaulniers@xxxxxxxxxx wrote: > > 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@xxxxxxxxxxxxxxx # 4.19 > > Reported-by: S, Shirish <Shirish.S@xxxxxxx> > > Reported-by: Matthias Kaehlcke <mka@xxxxxxxxxx> > > Suggested-by: James Y Knight <jyknight@xxxxxxxxxx> > > Suggested-by: Nathan Chancellor <natechancellor@xxxxxxxxx> > > Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> > > Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx> > > Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx> > > and applied. > This patch causes a segfault: https://bugs.freedesktop.org/show_bug.cgi?id=109487 Any ideas? Alex > Harry > > > --- > > drivers/gpu/drm/amd/display/dc/calcs/Makefile | 2 +- > > drivers/gpu/drm/amd/display/dc/dml/Makefile | 2 +- > > 2 files changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/gpu/drm/amd/display/dc/calcs/Makefile b/drivers/gpu/drm/amd/display/dc/calcs/Makefile > > index 95f332ee3e7e..dc85a3c088af 100644 > > --- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile > > +++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile > > @@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),) > > cc_stack_align := -mstack-alignment=16 > > endif > > > > -calcs_ccflags := -mhard-float -msse $(cc_stack_align) > > +calcs_ccflags := -mhard-float -msse -msse2 $(cc_stack_align) > > > > CFLAGS_dcn_calcs.o := $(calcs_ccflags) > > CFLAGS_dcn_calc_auto.o := $(calcs_ccflags) > > diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile > > index d97ca6528f9d..33c7d7588712 100644 > > --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile > > +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile > > @@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),) > > cc_stack_align := -mstack-alignment=16 > > endif > > > > -dml_ccflags := -mhard-float -msse $(cc_stack_align) > > +dml_ccflags := -mhard-float -msse -msse2 $(cc_stack_align) > > > > CFLAGS_display_mode_lib.o := $(dml_ccflags) > > CFLAGS_display_pipe_clocks.o := $(dml_ccflags) > > > _______________________________________________ > amd-gfx mailing list > amd-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
