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authorThomas Zimmermann <tzimmermann@suse.de>2024-11-05 09:43:47 +0100
committerThomas Zimmermann <tzimmermann@suse.de>2024-11-05 09:43:47 +0100
commite301aea030d60da760f85f854a82ce788d5cf6e7 (patch)
tree0518946973b140be8105fb5b5bc45760675e5d1d /tools/include/linux/bits.h
parentb04ce1e718bd55302b52d05d6873e233cb3ec7a1 (diff)
parent59b723cd2adbac2a34fc8e12c74ae26ae45bf230 (diff)
Merge drm/drm-fixes into drm-misc-fixes
Backmerging to get the latest fixes from v6.12-rc6. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'tools/include/linux/bits.h')
-rw-r--r--tools/include/linux/bits.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/include/linux/bits.h b/tools/include/linux/bits.h
index 0eb24d21aac2..60044b608817 100644
--- a/tools/include/linux/bits.h
+++ b/tools/include/linux/bits.h
@@ -36,4 +36,19 @@
#define GENMASK_ULL(h, l) \
(GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l))
+#if !defined(__ASSEMBLY__)
+/*
+ * Missing asm support
+ *
+ * __GENMASK_U128() depends on _BIT128() which would not work
+ * in the asm code, as it shifts an 'unsigned __init128' data
+ * type instead of direct representation of 128 bit constants
+ * such as long and unsigned long. The fundamental problem is
+ * that a 128 bit constant will get silently truncated by the
+ * gcc compiler.
+ */
+#define GENMASK_U128(h, l) \
+ (GENMASK_INPUT_CHECK(h, l) + __GENMASK_U128(h, l))
+#endif
+
#endif /* __LINUX_BITS_H */