pvrdma_get_dma_mr(9)

💅 pvrdma_get_dma_mr(9) — from the Kernel API Manual, bestie ✨

okay so picture this: you're deep in the kernel, right, and you need a DMA memory region, and you're like "bestie who do I even ask" — and boom, this function is literally right there. her whole job is getting you that DMA memory region. no cap. 🫶

This page lives in section 9 of the manual, and she's a kernel API girlie through and through — not your regular userland nonsense. 💜

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✨ NAME ✨

pvrdma_get_dma_mr — get a DMA memory region 🎀

like, the name is the vibe. she gets. you a. DMA memory region. periodt.

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🌸 SYNOPSIS 🌸

struct ib_mr * pvrdma_get_dma_mr (struct ib_pd *pd , int acc );

that's it. that's the whole call. two arguments, one pointer back out. iconic, honestly. ⭐

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🦋 ARGUMENTS 🦋

• pd — the protection domain. yes bestie, this is the protection domain you're handing over. she's kind of a big deal. main character energy honestly. 👑
• acc — the access flags. just the flags. that's the whole thing. int-coded and unbothered. 💅

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🔥 RETURN 🔥

on success you get an ib_mr pointer — slay, congrats, the mr is yours 💖 — and otherwise it returns an errno. so like, if things go sideways, don't panic, it's giving error code, just check it. 😭

ngl, always check the return value. "otherwise returns an errno" is right there in the text, so don't come crying to me later if you ignored it. 🙈

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🌈 SEE ALSO 🌈

• the Kernel file ./drivers/infiniband/hw/vmw_pvrdma/pvrdma_mr.c — literally where she lives, go read the source, iykyk 🧚
• pvrdma_reg_user_mr(9)
• pvrdma_alloc_mr(9)
• pvrdma_dereg_mr(9)

the whole mr friend group honestly, go say hi. 🫶✨

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and that's the page, bestie 🍓 — this lil masterpiece came from the source/version line ./drivers/infiniband/hw/vmw_pv... and it's dated October 2026, so mark your calendar and stan responsibly. mwah 💋💜