pci_pasid_status(9)

🌸 pci_pasid_status(9) 🌸

okay so bestie, welcome to the Kernel API Manual — today's main character is pci_pasid_status(9), and honestly? she's a little lookup function with a lot of attitude. let's get into it 💅

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✨ NAME ✨

pci_pasid_status — Check the PASID status 👑

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✨ SYNOPSIS ✨

int pci_pasid_status (struct pci_dev *pdev );

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✨ ARGUMENTS ✨

• pdev — the PCI device structure, aka the little guy you're asking about 🫶

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✨ DESCRIPTION ✨

so here's the vibe check 🔍: if there's no PASID capability present at all, this function returns a negative value. rude but fair, it's just how she communicates 😭

otherwise? she hands you back the value of the control register, and the statuses she reports are:

• PCI_PASID_CTRL_ENABLE — PASID enabled ✨
• PCI_PASID_CTRL_EXEC — Execute permission enabled
• PCI_PASID_CTRL_PRIV — Privileged mode enabled 🔐

like, that's it, that's the whole function. she ate and left no crumbs 🍓

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✨ SEE ALSO ✨

okay this part is the group chat, because she does not work alone 👯‍♀️

kernel file ./drivers/pci/ats.c — that's her home address, iykyk 🏠

• pci_ats_supported(9)
• pci_prepare_ats(9)
• pci_enable_ats(9)
• pci_disable_ats(9)
• pci_ats_queue_depth(9)
• pci_ats_page_aligned(9)
• pci_ats_required(9)
• pci_enable_pri(9)
• pci_disable_pri(9)
• pci_restore_pri_state(9)
• pci_reset_pri(9)
• pci_prg_resp_pasid_required(9)
• pci_pri_supported(9)
• pci_enable_pasid(9)
• pci_disable_pasid(9)
• pci_restore_pasid_state(9)
• pci_pasid_features(9)
• pci_max_pasids(9)

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ngl bestie, if you need any of these, click through — they're all in the same ./drivers/pci friend group 💖

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and that's the whole page!! mwah 💋 this lil legend lives in ./drivers/pci, dated October 2026, and her name is — say it with me — pci_pasid_status(9) 🎀✨ bye bestie, go read a register 🦋