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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-09-30 10:50:54 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-09-30 10:50:54 +0200 |
| commit | 2dd0ef5d951e9b565ddb324fe26c531b6a40bf82 (patch) | |
| tree | b24f5029eaa4cea229163c14549f571499c36fde /include/uapi/linux/const.h | |
| parent | 15499749fbb864cc0737bc8ecaf0e28a6b6d62dd (diff) | |
| parent | 9852d85ec9d492ebef56dc5f229416c925758edc (diff) | |
Merge drm/drm-next into drm-misc-next
Get drm-misc-next to up v6.12-rc1.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'include/uapi/linux/const.h')
| -rw-r--r-- | include/uapi/linux/const.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/uapi/linux/const.h b/include/uapi/linux/const.h index a429381e7ca5..e16be0d37746 100644 --- a/include/uapi/linux/const.h +++ b/include/uapi/linux/const.h @@ -28,6 +28,23 @@ #define _BITUL(x) (_UL(1) << (x)) #define _BITULL(x) (_ULL(1) << (x)) +#if !defined(__ASSEMBLY__) +/* + * Missing asm support + * + * __BIT128() would not work in the asm code, as it shifts an + * 'unsigned __init128' data type as direct representation of + * 128 bit constants is not supported in the gcc compiler, as + * they get silently truncated. + * + * TODO: Please revisit this implementation when gcc compiler + * starts representing 128 bit constants directly like long + * and unsigned long etc. Subsequently drop the comment for + * GENMASK_U128() which would then start supporting asm code. + */ +#define _BIT128(x) ((unsigned __int128)(1) << (x)) +#endif + #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (__typeof__(x))(a) - 1) #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask)) |