__restore_processor_state(9)

💖 __restore_processor_state — Kernel API Manual 💖

okay so bestie, pull up a chair, because we're talking about __restore_processor_state(9) today and honestly? it's giving comeback era. ✨

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🎀 NAME 🎀

__restore_processor_state — literally puts the CPU registers back the way __save_processor_state() left them. no cap, that's the whole vibe. 🫶

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✨ SYNOPSIS ✨

void notrace __restore_processor_state (struct saved_context *ctxt );

like, that's the signature, copy it exactly pls, notrace is right there and it's not decorative. 💅

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🌸 ARGUMENTS 🌸

• ctxt — the struct saved_context * you're loading the register contents from. this is the source of truth, the blueprint, the little saved-context scrapbook we're restoring from. 🦋

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🔥 DESCRIPTION 🔥

so the asm code that gets us here? it's already done the glow-up — it will have restored a usable GDT. slay. 💀

but (and this is the plot twist) it will be pointing to the wrong alias. 🙈 so the GDT is usable, it's just... pointing at the wrong alias. that's the situation. that's the task. main character energy is fixing that.

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👑 SEE ALSO 👑

• Kernel file ./arch/x86/power/cpu.c
• __save_processor_state(9) — the one that saved everything in the first place, the prequel, the origin story. 🧚

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and that's the whole page, bestie — go forth and restore those registers 💜

sign-off szn: this little masterpiece lives under ./arch/x86/power, and the version/date on it is October 2026. it's from the Kernel API Manual, which, yes, is exactly as iconic as it sounds. 🌈⭐🍓