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authorMasahiro Yamada <masahiroy@kernel.org>2020-03-26 09:00:57 +0100
committerMasahiro Yamada <masahiroy@kernel.org>2020-04-08 17:01:59 +0200
commit8192e551c7e6e0628597cb5648e1c2f23a8ad294 (patch)
treeecbb499c9eacf7e50e2b24d1e55387f5dada7d9a /drivers
parentx86: remove always-defined CONFIG_AS_AVX (diff)
downloadlinux-8192e551c7e6e0628597cb5648e1c2f23a8ad294.tar.xz
linux-8192e551c7e6e0628597cb5648e1c2f23a8ad294.zip
drm/i915: remove always-defined CONFIG_AS_MOVNTDQA
CONFIG_AS_MOVNTDQA was introduced by commit 0b1de5d58e19 ("drm/i915: Use SSE4.1 movntdqa to accelerate reads from WC memory"). We raise the minimal supported binutils version from time to time. The last bump was commit 1fb12b35e5ff ("kbuild: Raise the minimum required binutils version to 2.21"). I confirmed the code in $(call as-instr,...) can be assembled by the binutils 2.21 assembler and also by LLVM integrated assembler. Remove CONFIG_AS_MOVNTDQA, which is always defined. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/Makefile3
-rw-r--r--drivers/gpu/drm/i915/i915_memcpy.c5
2 files changed, 0 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 9f887a86e555..6cd1f6253814 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -28,9 +28,6 @@ subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
CFLAGS_display/intel_fbdev.o = $(call cc-disable-warning, override-init)
-subdir-ccflags-y += \
- $(call as-instr,movntdqa (%eax)$(comma)%xmm0,-DCONFIG_AS_MOVNTDQA)
-
subdir-ccflags-y += -I$(srctree)/$(src)
# Please keep these build lists sorted!
diff --git a/drivers/gpu/drm/i915/i915_memcpy.c b/drivers/gpu/drm/i915/i915_memcpy.c
index fdd550405fd3..7b3b83bd5ab8 100644
--- a/drivers/gpu/drm/i915/i915_memcpy.c
+++ b/drivers/gpu/drm/i915/i915_memcpy.c
@@ -35,7 +35,6 @@
static DEFINE_STATIC_KEY_FALSE(has_movntdqa);
-#ifdef CONFIG_AS_MOVNTDQA
static void __memcpy_ntdqa(void *dst, const void *src, unsigned long len)
{
kernel_fpu_begin();
@@ -93,10 +92,6 @@ static void __memcpy_ntdqu(void *dst, const void *src, unsigned long len)
kernel_fpu_end();
}
-#else
-static void __memcpy_ntdqa(void *dst, const void *src, unsigned long len) {}
-static void __memcpy_ntdqu(void *dst, const void *src, unsigned long len) {}
-#endif
/**
* i915_memcpy_from_wc: perform an accelerated *aligned* read from WC