summaryrefslogtreecommitdiff
path: root/tools/include/linux/bits.h
diff options
context:
space:
mode:
authorThomas Hellström <thomas.hellstrom@linux.intel.com>2024-11-04 11:21:20 +0300
committerThomas Hellström <thomas.hellstrom@linux.intel.com>2024-11-04 11:21:20 +0300
commitc787c2901e2c03008e536b86cb0103ce6fd05e2d (patch)
tree06966989052f14f98c9b1ede0ea98822f317a586 /tools/include/linux/bits.h
parenta19d1db9a3fa89fabd7c83544b84f393ee9b851f (diff)
parent30169bb64580bd7bce9290c1952bf0aa6cc37fe5 (diff)
downloadlinux-c787c2901e2c03008e536b86cb0103ce6fd05e2d.tar.xz
Merge drm/drm-next into drm-xe-next
Backmerging to get up-to-date and to bring in a fix that was merged through drm-misc-fixes. Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
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 */