stage2_flush_vm(9)

💖 stage2_flush_vm(9) 💖

okay so bestie, you’ve opened stage2_flush_vm(9) from the Kernel API Manual, and honestly? it’s giving small function, big cache-invalidate energy. ✨ No cap, this is the page about invalidating cache for pages mapped in stage 2.

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🌸 NAME 🌸

• stage2_flush_vm — Invalidate cache for pages mapped in stage 2

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🦋 SYNOPSIS 🦋

void stage2_flush_vm (struct kvm *kvm );

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🎀 ARGUMENTS 🎀

• kvm — The struct kvm pointer. That’s the pointer you’re handing over, bestie 🫶

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💅 DESCRIPTION 💅

So basically: go through the stage 2 page tables and invalidate any cache lines backing memory already mapped to the VM. That’s the whole assignment — stage 2 page tables get the walk-through, and any cache lines backing memory that’s already mapped to the VM get invalidated. Periodt. 💖

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🌈 SEE ALSO 🌈

Kernel file: ./arch/arm64/kvm/mmu.c

Here’s the whole friend group, in order, no cap 👑

• kvm_arch_flush_remote_tlbs(9)
• __unmap_stage2_range(9)
• free_hyp_pgds(9)
• create_hyp_mappings(9)
• hyp_alloc_private_va_range(9)
• create_hyp_io_mappings(9)
• create_hyp_exec_mappings(9)
• kvm_init_stage2_mmu(9)
• stage2_unmap_vm(9)
• kvm_phys_addr_ioremap(9)
• kvm_stage2_wp_range(9)
• kvm_mmu_wp_memory_region(9)
• kvm_mmu_split_memory_region(9)
• kvm_handle_guest_abort(9)

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Signed off from the ./arch/arm64/kvm source corner, dated October 2026, with stage2_flush_vm(9) on the footer and main-character cache-flush energy — mwah 💋✨