mshv_prepare_pinned_region(9)

🎀 mshv_prepare_pinned_region(9) 🎀

okay so bestie, welcome to the Kernel API Manual — this one is all about pinning and mapping memory regions, and honestly it's giving backstage-pass energy. let's get into it 💅

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✨ NAME ✨

mshv_prepare_pinned_region — pin and map memory regions, that's literally the whole vibe 🫶

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🌸 SYNOPSIS 🌸

int mshv_prepare_pinned_region (struct mshv_mem_region *region );

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🦋 ARGUMENTS 🦋

• region — a pointer to the memory region structure. yes, it's a pointer, yes it points at a struct mshv_mem_region, we love a type-safe moment 🎀

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💖 DESCRIPTION 💖

so this function handles the memory regions that are explicitly marked as pinned. and pinned regions are lowkey the main characters here: they're preallocated, mapped upfront, and they do not rely on fault-based population. no waiting around for a page fault to show up, periodt.

what it actually does, step by step, no cap:

• makes sure the region is properly populated ✨
• handles encryption requirements for SNP partitions, if applicable 🔥
• maps the region 🌈
• and then does whatever sharing or eviction operations are necessary — based on how the mapping turned out 👑

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🧚 RETURN 🧚

• 0 on success 🎉
• a negative error code on failure 😭

ngl bestie, if you get a negative number back, that's your sign something went sideways — go check it 🫶

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💜 SEE ALSO 💜

• Kernel file ./drivers/hv/mshv_root_main.c 🍓
• mshv_handle_gpa_intercept(9) ⭐

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and that's the page!! mwah 💋 this little gem lives under ./drivers/hv and the version/date stamp on it is October 2026 — iconic, timeless, ahead of its time honestly 🎀✨🦋