kvmhv_nestedv2_flush_vcpu(9)

🦋 kvmhv_nestedv2_flush_vcpu(9) 🦋

ok so bestie, welcome to the Kernel API Manual — this one is a deep cut from the kvmhv_nestedv2 world and honestly it's giving "hypervisor lore, but make it fashion" 💅

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✨ NAME ✨

kvmhv_nestedv2_flush_vcpu — send modified Guest State IDs to the host 🌸

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✨ SYNOPSIS ✨

int kvmhv_nestedv2_flush_vcpu (struct kvm_vcpu *vcpu , u64 time_limit );

like, that's the whole vibe — one function, two args, no cap 🫶

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✨ ARGUMENTS ✨

• vcpu — the vcpu, bestie. it's a struct kvm_vcpu * and it's literally just... the vcpu 😭
• time_limit — a <italic>u64</italic> holding the hdec expiry tb ⏰

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✨ DESCRIPTION ✨

okay so here's what's happening: this function sends the values marked by __kvmhv_nestedv2_mark_dirty to the L0 host 👑 like, that's the whole job.

Thread wide values? those get copied to the H_GUEST_RUN_VCPU input buffer ✨ easy, slay.

Guest wide values? nope, not so fast — those need to be sent with H_GUEST_SET first 🙈 consider it a two-step, iykyk.

💀 bestie reminder: the hdec tb offset is always sent to L0 host. always. no exceptions, periodt.

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🌈 SEE ALSO 🌈

• Kernel file ./arch/powerpc/kvm/book3s_hv_nestedv2.c 🎀
• __kvmhv_nestedv2_mark_dirty(9)
• __kvmhv_nestedv2_cached_reload(9)
• kvmhv_nestedv2_set_ptbl_entry(9)
• kvmhv_nestedv2_set_vpa(9)
• kvmhv_nestedv2_parse_output(9)
• kvmhv_nestedv2_vcpu_create(9)
• kvmhv_nestedv2_vcpu_free(9)

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and that's the page, bestie 🧚 source ./arch/powerpc/kvm, dated October 2026 — signed, sealed, kvmhv_nestedv2_flush_vcpu(9) 💖 mwah 💋