STRUCT ACRN_IRQFD(9)

💅 struct acrn_irqfd 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this is the page for struct acrn_irqfd, and honestly? it's giving "small but mighty." it's literally the data you need to operate a &struct hsm_irqfd, no cap 🫶

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🌸 NAME 🌸

struct acrn_irqfd — the data you need to operate a &struct hsm_irqfd 💖

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✨ SYNOPSIS ✨

struct acrn_irqfd {
    __s32 fd;
    __u32 flags;
    struct acrn_msi_entry   msi;
 };

like, that's the whole shape of it. three little members, one big job 👑

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🎀 Members 🎀

• fd — the fd of the eventfd that's associated with a hsm_irqfd. it's the whole connection point, iykyk 🔥
• flags — a logical-OR of ACRN_IRQFD_FLAG_*. yes, the * is doing real work there, it's a family of flags, mwah 💅
• msi — the info of the MSI associated with the irqfd. this is where the interrupt gossip lives 🌈

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👑 SEE ALSO 👑

the kernel file is ./include/uapi/linux/acrn.h and it's lowkey the mothership 🚀 — go hang out with the rest of the struct family:

• struct acrn_mmio_request(9)
• struct acrn_pio_request(9)
• struct acrn_pci_request(9)
• struct acrn_io_request(9)
• struct acrn_ioreq_notify(9)
• struct acrn_vm_creation(9)
• struct acrn_gp_regs(9)
• struct acrn_descriptor_ptr(9)
• struct acrn_regs(9)
• struct acrn_vcpu_regs(9)
• struct acrn_vm_memmap(9)
• struct acrn_ptdev_irq(9)
• struct acrn_pcidev(9)
• struct acrn_mmio_dev_res(9)
• struct acrn_mmiodev(9)
• struct acrn_vdev(9)
• struct acrn_msi_entry(9)
• struct acrn_cstate_data(9)
• struct acrn_pstate_data(9)
• struct acrn_ioeventfd(9)

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bestie note: these are the cross-references the page itself points you at — don't come for me if your fave struct isn't here, I'm just the messenger 🧚

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and that's the whole vibe check, we ate and left no crumbs 🍓 this lil gem lives in the ./include/uapi/linux corner of the kernel, dated October 2026, and it's filed under the Kernel API Manual — slay, iconic, periodt 💜🦋