diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/1157-drm-amd-display-add-msse2-to-prevent-Clang-from-emit.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/1157-drm-amd-display-add-msse2-to-prevent-Clang-from-emit.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/1157-drm-amd-display-add-msse2-to-prevent-Clang-from-emit.patch b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/1157-drm-amd-display-add-msse2-to-prevent-Clang-from-emit.patch new file mode 100644 index 00000000..399f2f18 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/1157-drm-amd-display-add-msse2-to-prevent-Clang-from-emit.patch @@ -0,0 +1,60 @@ +From 41a421da8092c2f223039b32d442264c3a8749bb Mon Sep 17 00:00:00 2001 +From: "ndesaulniers@google.com" <ndesaulniers@google.com> +Date: Thu, 24 Jan 2019 16:52:59 -0800 +Subject: [PATCH 1157/2940] 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> +--- + 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 416500e51b8d..ad2997ff6f10 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) +-- +2.17.1 + |