diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2024-02-03 11:45:14 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-02-16 14:30:16 +0100 |
| commit | 9cbff7f2214d16af5c10f1f55ac72d4c1a8bd787 (patch) | |
| tree | b2e7bad1200da86e7001dc32a709506f72bd8456 /arch/s390/kernel | |
| parent | ed3a0a011a9c33d81a0d024882ee433c42bfccae (diff) | |
s390/fpu: remove regs member from struct fpu
KVM was the only user which modified the regs pointer in struct fpu. Remove
the pointer and convert the rest of the core fpu code to directly access
the save area embedded within struct fpu.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/fpu.c | 11 | ||||
| -rw-r--r-- | arch/s390/kernel/process.c | 1 |
2 files changed, 4 insertions, 8 deletions
diff --git a/arch/s390/kernel/fpu.c b/arch/s390/kernel/fpu.c index b976da5bf71b..a0ef3fc5d90f 100644 --- a/arch/s390/kernel/fpu.c +++ b/arch/s390/kernel/fpu.c @@ -110,13 +110,12 @@ EXPORT_SYMBOL(__kernel_fpu_end); void __load_user_fpu_regs(void) { struct fpu *state = ¤t->thread.ufpu; - void *regs = current->thread.ufpu.regs; fpu_lfpc_safe(&state->fpc); if (likely(cpu_has_vx())) - load_vx_regs(regs); + load_vx_regs(state->vxrs); else - load_fp_regs(regs); + load_fp_regs(state->fprs); clear_thread_flag(TIF_FPU); } @@ -132,7 +131,6 @@ void save_user_fpu_regs(void) { unsigned long flags; struct fpu *state; - void *regs; local_irq_save(flags); @@ -140,13 +138,12 @@ void save_user_fpu_regs(void) goto out; state = ¤t->thread.ufpu; - regs = current->thread.ufpu.regs; fpu_stfpc(&state->fpc); if (likely(cpu_has_vx())) - save_vx_regs(regs); + save_vx_regs(state->vxrs); else - save_fp_regs(regs); + save_fp_regs(state->fprs); set_thread_flag(TIF_FPU); out: local_irq_restore(flags); diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index b7b623818753..dd456b475861 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -94,7 +94,6 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) save_user_fpu_regs(); *dst = *src; - dst->thread.ufpu.regs = dst->thread.ufpu.fprs; dst->thread.kfpu_flags = 0; /* |