mshv_region...l_invalidate(9)

✨ mshv_region_interval_invalidate ✨

okay so bestie, welcome to the Kernel API Manual 💖 — we're talking about mshv_region_interval_invalidate(9) today and honestly? she's kind of a big deal. buckle up 🎀

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🌸 NAME 🌸

mshv_region_interval_invalidate — invalidates a range of memory region. that's it, that's the vibe 💅

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🦋 SYNOPSIS 🦋

bool mshv_region_interval_invalidate (struct mmu_interval_notifier *mni
, const struct mmu_notifier_range *range , unsigned long cur_seq );

like, look at her go 😭 she returns a bool, she takes three args, she's booked and busy.

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🎀 ARGUMENTS 🎀

• mni — a pointer to the mmu_interval_notifier structure. yes she's a pointer, yes she's important 🫶
• range — a pointer to the mmu_notifier_range structure. the actual range bestie, the whole point of the operation ✨
• cur_seq — the current sequence number for the interval notifier. keep up with her, she's counting 🔥

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💜 DESCRIPTION 💜

so what does she do, you ask? she invalidates a memory region by remapping its pages with no access permissions — no cap, that's literally the whole move 👑

she locks the region's mutex to make sure everything stays thread-safe (we love a responsible queen), and she updates the sequence number for the interval notifier while she's at it 💅

here's the little conditional moment: if the range is blockable, she uses a blocking lock — patient, committed, main character energy. if it's not blockable, she attempts a non-blocking lock and just returns false if it doesn't work out 🙈 no drama, no waiting around.

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💀 NOTE 💀

okay this part is serious, listen up. failing to invalidate a region is a serious error — like, the pages will be considered freed while they are still mapped by the hypervisor. any attempt to access those pages will likely crash the system 😭💀 so please, do not fumble this. periodt.

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⭐ RETURN ⭐

• true — the region was successfully invalidated, slay ✅
• false — otherwise 🫠

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🌈 SEE ALSO 🌈

• the kernel file ./drivers/hv/mshv_regions.c (iykyk 👀)
• mshv_chunk_stride(9)
• mshv_region_process_chunk(9)
• mshv_region_process_range(9)
• mshv_region_range_fault(9)

all her friends, all iconic, go read them too 💖

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kisses from ./drivers/hv 💌 this page was dated October 2026 and it's mshv_region_interval_invalidate(9) forever, mwah 🧚‍♀️💜