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s390/vx: add 64 and 128 bit members to __vector128 struct

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Add 64 and 128 bit members to __vector128 struct in order to allow reading
of the complete value, or the higher or lower part of vector register
contents instead of having to use casts.

Add an explicit __aligned(4) statement to avoid that the alignment of the
structure changes from 4 to 8. This should make sure that no breakage
happens because of this change.

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-02-02 15:47:38 +01:00
parent 1306711ad3
commit b0b7b43fcc
1 changed files with 9 additions and 2 deletions
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11
arch/s390/include/uapi/asm/types.h
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@ -19,8 +19,15 @@ typedef unsigned long addr_t;
typedef __signed__ long saddr_t;
typedef struct {
__u32 u[4];
} __vector128;
union {
struct {
__u64 high;
__u64 low;
};
__uint128_t v;
__u32 u[4];
};
} __attribute__((packed, aligned(4))) __vector128;
#endif /* __ASSEMBLY__ */