rvt_get_dma_mr(9)

💖 rvt_get_dma_mr(9) 💖

okay bestie, welcome to the rvt_get_dma_mr(9) page — yes that's the section 9 kernel API manual energy, we're in the big leagues now 🎀 this one is literally all about grabbing yourself a DMA memory region, and honestly? iconic.

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✨ NAME ✨

rvt_get_dma_mr — get a DMA memory region 💅

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🌸 SYNOPSIS 🌸

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

like, that's the whole vibe. two args, one struct ib_mr * coming back at you 🦋

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🫶 ARGUMENTS 🫶

• pd — the protection domain for this memory region, like it's the whole context of where this MR lives, yk?
• acc — access flags, the little permission details, no cap 🔥

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⭐ RETURN ⭐

you get the memory region on success 💖 but if it doesn't slay, it returns an errno instead 😭 that's the deal.

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🌈 SEE ALSO 🌈

first up, the kernel file itself: ./drivers/infiniband/sw/rdmavt/mr.c — that's where all the lore lives 📁 and then the whole friend group of related pages, fr fr:

• rvt_driver_mr_init(9)
• rvt_mr_exit(9)
• rvt_alloc_lkey(9)
• rvt_free_lkey(9)
• rvt_reg_user_mr(9)
• rvt_dereg_clean_qp_cb(9)
• rvt_dereg_clean_qps(9)
• rvt_check_refs(9)
• rvt_mr_has_lkey(9)
• rvt_ss_has_lkey(9)
• rvt_dereg_mr(9)
• rvt_alloc_mr(9)
• rvt_set_page(9)
• rvt_map_mr_sg(9)
• rvt_fast_reg_mr(9)
• rvt_invalidate_rkey(9)
• rvt_sge_adjacent(9)
• rvt_lkey_ok(9)
• rvt_rkey_ok(9)

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bestie pls note: this all comes from ./drivers/infiniband/sw/rdmavt, dated October 2026 — that's the source and the version and the date all in one, and the page is rvt_get_dma_mr(9) ofc 💜 mwah, go read the whole mr.c file, it's giving main character energy 🧚‍♀️✨