epf_ntb_mw_bar_init(9)

💅 epf_ntb_mw_bar_init(9) — like, the whole glow-up guide

ok so bestie, welcome to the Kernel API Manual entry for epf_ntb_mw_bar_init(9) — yes that's the title, yes it's a mouthful, no we're not changing it 💖 This is a kernel function that does exactly one iconic job: it configures the Memory window BARs. That's the whole vibe. Periodt.

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✨ NAME ✨

epf_ntb_mw_bar_init — Configure Memory window BARs 🎀

Like, it sets up the memory windows. That's it. That's the function. Slay.

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🌸 SYNOPSIS 🌸

int epf_ntb_mw_bar_init (struct epf_ntb *ntb );

So it takes one thing and it hands you back an int. Simple. Clean. Minimalist. It's giving "I have one job and I'm gonna do it." 👑

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🦋 ARGUMENTS 🦋

• ntb — the NTB device that facilitates communication between HOST and VHOST. Like, this is the actual device doing the talking-to-each-other thing. Host on one side, vhost on the other, and this struct is the little messenger fairy in the middle 🧚 Lowkey the main character of this whole page tbh.

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⭐ RETURN ⭐

• Zero for success 🎉 — like when everything just works and you get to close the tab
• An error code in case of failure 😭 — like when it doesn't work, and the kernel tells you so in the form of a number you then have to go look up. No cap, that's the deal.

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🔥 SEE ALSO 🔥

ok the guest list for this party is LONG, buckle up bestie:

• Kernel file: ./drivers/pci/endpoint/functions/pci-epf-vntb.c — yes that's the source file, go read it, it's literally right there 🫶
• epf_ntb_link_up(9)
• epf_ntb_configure_mw(9)
• epf_ntb_teardown_mw(9)
• epf_ntb_cmd_handler(9)
• epf_ntb_config_sspad_bar_clear(9)
• epf_ntb_config_sspad_bar_set(9)
• epf_ntb_config_spad_bar_free(9)
• epf_ntb_config_spad_bar_alloc(9)
• epf_ntb_configure_interrupt(9)
• epf_ntb_db_bar_init(9)
• epf_ntb_db_bar_clear(9)
• epf_ntb_mw_bar_clear(9)
• epf_ntb_is_bar_used(9)
• epf_ntb_find_bar(9)
• epf_ntb_init_epc_bar(9)
• epf_ntb_epc_init(9)
• epf_ntb_epc_cleanup(9)
• epf_ntb_add_cfs(9)
• epf_ntb_bind(9)
• epf_ntb_unbind(9)
• epf_ntb_probe(9)

That's every single one, bestie — I did not skip a single name, because the way that I keep every detail is honestly my toxic trait 💀✨ iykyk.

ngl the whole epf_ntb_* family is basically one big friend group and this function is just one member showing up to the group chat to do its little BAR-configuring moment. Respect it.

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that's the page!! you made it to the end!! 🎀🦋💜

Signed off from ./drivers/pci/endpoint/functions, dated October 2026 — stay iconic, stay configured, and remember: zero is success, error codes are just ✨feedback✨ 💅🌈