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s390/vx: use simple assignments to access __vector128 members

Browse source 
Use simple assignments to access __vector128 members instead of hard
to read casts.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-02-02 15:47:39 +01:00
parent b0b7b43fcc
commit a02d584e72
5 changed files with 10 additions and 10 deletions
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4
arch/s390/include/asm/fpu/internal.h
View file

@ -27,7 +27,7 @@ static inline void convert_vx_to_fp(freg_t *fprs, __vector128 *vxrs)
int i;
for (i = 0; i < __NUM_FPRS; i++)
fprs[i] = *(freg_t *)(vxrs + i);
fprs[i].ui = vxrs[i].high;
}
static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs)
@ -35,7 +35,7 @@ static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs)
int i;
for (i = 0; i < __NUM_FPRS; i++)
*(freg_t *)(vxrs + i) = fprs[i];
vxrs[i].high = fprs[i].ui;
}
static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)

4
arch/s390/kernel/compat_signal.c
View file

@ -139,7 +139,7 @@ static int save_sigregs_ext32(struct pt_regs *regs,
/* Save vector registers to signal stack */
if (MACHINE_HAS_VX) {
for (i = 0; i < __NUM_VXRS_LOW; i++)
vxrs[i] = *((__u64 *)(current->thread.fpu.vxrs + i) + 1);
vxrs[i] = current->thread.fpu.vxrs[i].low;
if (__copy_to_user(&sregs_ext->vxrs_low, vxrs,
sizeof(sregs_ext->vxrs_low)) ||
__copy_to_user(&sregs_ext->vxrs_high,
@ -173,7 +173,7 @@ static int restore_sigregs_ext32(struct pt_regs *regs,
sizeof(sregs_ext->vxrs_high)))
return -EFAULT;
for (i = 0; i < __NUM_VXRS_LOW; i++)
*((__u64 *)(current->thread.fpu.vxrs + i) + 1) = vxrs[i];
current->thread.fpu.vxrs[i].low = vxrs[i];
}
return 0;
}

2
arch/s390/kernel/crash_dump.c
View file

@ -110,7 +110,7 @@ void __init save_area_add_vxrs(struct save_area *sa, __vector128 *vxrs)
/* Copy lower halves of vector registers 0-15 */
for (i = 0; i < 16; i++)
memcpy(&sa->vxrs_low[i], &vxrs[i].u[2], 8);
sa->vxrs_low[i] = vxrs[i].low;
/* Copy vector registers 16-31 */
memcpy(sa->vxrs_high, vxrs + 16, 16 * sizeof(__vector128));
}

6
arch/s390/kernel/ptrace.c
View file

@ -990,7 +990,7 @@ static int s390_vxrs_low_get(struct task_struct *target,
if (target == current)
save_fpu_regs();
for (i = 0; i < __NUM_VXRS_LOW; i++)
vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1);
vxrs[i] = target->thread.fpu.vxrs[i].low;
return membuf_write(&to, vxrs, sizeof(vxrs));
}
@ -1008,12 +1008,12 @@ static int s390_vxrs_low_set(struct task_struct *target,
save_fpu_regs();
for (i = 0; i < __NUM_VXRS_LOW; i++)
vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1);
vxrs[i] = target->thread.fpu.vxrs[i].low;
rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1);
if (rc == 0)
for (i = 0; i < __NUM_VXRS_LOW; i++)
*((__u64 *)(target->thread.fpu.vxrs + i) + 1) = vxrs[i];
target->thread.fpu.vxrs[i].low = vxrs[i];
return rc;
}

4
arch/s390/kernel/signal.c
View file

@ -184,7 +184,7 @@ static int save_sigregs_ext(struct pt_regs *regs,
/* Save vector registers to signal stack */
if (MACHINE_HAS_VX) {
for (i = 0; i < __NUM_VXRS_LOW; i++)
vxrs[i] = *((__u64 *)(current->thread.fpu.vxrs + i) + 1);
vxrs[i] = current->thread.fpu.vxrs[i].low;
if (__copy_to_user(&sregs_ext->vxrs_low, vxrs,
sizeof(sregs_ext->vxrs_low)) ||
__copy_to_user(&sregs_ext->vxrs_high,
@ -210,7 +210,7 @@ static int restore_sigregs_ext(struct pt_regs *regs,
sizeof(sregs_ext->vxrs_high)))
return -EFAULT;
for (i = 0; i < __NUM_VXRS_LOW; i++)
*((__u64 *)(current->thread.fpu.vxrs + i) + 1) = vxrs[i];
current->thread.fpu.vxrs[i].low = vxrs[i];
}
return 0;
}