kvm_set_routing_entry(9)

💅 kvm_set_routing_entry(9) — Kernel API Manual, bestie edition 🎀

Okay so real talk, this one's from the Kernel API Manual and it's lowkey a little baby function — three args, one return value, no drama. But it's iconic in its own small way, so let's get into it. ✨

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🌸 NAME 🌸

kvm_set_routing_entry — populate a kvm routing entry from a user routing entry 🫶

Like, it takes the user's routing entry and fills in the kernel's version. Middleman energy, honestly, but the good kind. 💅

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⭐ SYNOPSIS ⭐

int kvm_set_routing_entry (struct kvm *kvm , struct
kvm_kernel_irq_routing_entry *e , const struct kvm_irq_routing_entry *ue
);

Returns an int, obviously. No surprises there. 🎀

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💖 ARGUMENTS 💖

• kvm — the VM this entry is applied to. Like, which VM are we doing all this for? This one. That's the vibe check. 🦋
• e — kvm kernel routing entry handle. This is the kernel-side one, the one getting populated. Main character of the operation, ngl. 👑
• ue — user api routing entry handle. This is the user-side one, and it's const, so hands off — it's just here to be read from. 🙈

Also, heads up: the return is 0 on success, -EINVAL on errors. So if you get a negative number back, something's off and the function is not having it. 😭

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🌈 SEE ALSO 🌈

Kernel file ./arch/arm64/kvm/vgic/vgic-irqfd.c — go read it, it's giving source-of-truth. 📖✨

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Fr fr, that's the whole page — no hidden options, no secret flags, no environment variables lurking anywhere. What you see is what you get. 💀

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Kisses from the ./arch/arm64/kvm/vgic crew, dated October 2026 — that's the source and the date, bestie, and now you're fully caught up. Slay. 💜🧚‍♀️