tm_spr_set(9)

👑 tm_spr_set(9) — Kernel API Manual 👑

✨ NAME ✨

tm_spr_set — set the TM related SPR registers 💅

🌸 SYNOPSIS 🌸

int tm_spr_set (struct task_struct *target , const struct user_regset *regset , unsigned int pos , unsigned int count , const void *kbuf , const void __user *ubuf );

💅 ARGUMENTS 💅

okay so here’s the whole cast, bestie 🫶

• target — the target task.
• regset — the user regset structure.
• pos — the buffer position.
• count — number of bytes to copy.
• kbuf — kernel buffer to copy into.
• ubuf — user buffer to copy from.

🎀 DESCRIPTION 🎀

this function sets transactional memory related SPR registers. no cap, that’s the job. the userspace interface buffer layout is literally this:

struct { u64             tm_tfhar; u64             tm_texasr; u64
       tm_tfiar; };

🦋 SEE ALSO 🦋

peep the kernel file ./arch/powerpc/kernel/ptrace/ptrace-tm.c — and these related faves:

• tm_cgpr_active(9)
• tm_cgpr_get(9)
• tm_cfpr_active(9)
• tm_cfpr_get(9)
• tm_cfpr_set(9)
• tm_cvmx_active(9)
• tm_cvmx_get(9)
• tm_cvmx_set(9)
• tm_cvsx_active(9)
• tm_cvsx_get(9)
• tm_cvsx_set(9)
• tm_spr_active(9)
• tm_spr_get(9)

xoxo 💖 your tm_spr_set(9) page is from ./arch/powerpc/kernel/ptrace, dated October 2026. stay slay, bestie 🎀