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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.patch60
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
+