rvt_rkey_ok(9)

💖 rvt_rkey_ok(9) — like, the whole vibe check for an RKEY 💖

okay so bestie, this one lives in the Kernel API Manual and it's genuinely such a little icon. her whole job? checking the IB virtual address, the length, and the RKEY. that's it. that's the post. 🎀

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✨ NAME ✨

rvt_rkey_ok — check the IB virtual address, length, and RKEY 👑

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🌸 SYNOPSIS 🌸

int rvt_rkey_ok (struct rvt_qp *qp , struct rvt_sge *sge , u32 len , u64
vaddr , u32 rkey , int acc );

no cap, that's the whole signature. six little arguments, one big job. 💅

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🦋 ARGUMENTS 🦋

• qp — the qp we're validating against. she's the main character here, everything gets checked through her. ✨
• sge — the SGE state. keeping track of the scatter/gather situation, as one does. 🧚
• len — how much data we're talking about. length of data, periodt. 📏
• vaddr — the virtual address to place data at. yes, that kind of address. 💜
• rkey — the rkey to check, obviously. it's literally in the name bestie 😭
• acc — the access flags. gotta know what we're allowed to do. 🔥

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🌈 RETURN 🌈

1 if it worked out — otherwise 0. yes, just a lil 1 or 0, she's not dramatic about it. 🫶

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👑 DESCRIPTION 👑

so what does she actually do on success? increments the reference count. that's the whole note. increments the reference count upon success. slay, honestly — short, sweet, and to the point. ⭐

ngl the description is doing the absolute least here, but we respect a minimal queen. 💅

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💖 SEE ALSO 💖

literally the whole friend group 🫶 — and the kernel file ./drivers/infiniband/sw/rdmavt/mr.c:

• rvt_driver_mr_init(9)
• rvt_mr_exit(9)
• rvt_alloc_lkey(9)
• rvt_free_lkey(9)
• rvt_get_dma_mr(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)

go read them all, i'll wait. 💀

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and that's the page!! 🎀 brought to you by ./drivers/infiniband/sw/rdmavt, stamped October 2026, filed under rvt_rkey_ok(9). mwah, bye bestie 💖✨🌸