page_pool_alloc

Struct PagePoolDmaBuffer

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pub struct PagePoolDmaBuffer { /* private fields */ }
Expand description

Page pool memory representing a DMA buffer useable by devices.

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impl MappedDmaTarget for PagePoolDmaBuffer

SAFETY: This struct keeps both the shared memory region which the sparse mapping maps, along with the sparse mapping itself until the struct is drop, satisfying the trait.

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fn base(&self) -> *const u8

The virtual address of the mapped memory.
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fn len(&self) -> usize

The length of the buffer in bytes.
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fn pfns(&self) -> &[u64]

4KB page numbers used to refer to the memory when communicating with the device.
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fn pfn_bias(&self) -> u64

The pfn_bias on confidential platforms (aka vTOM) applied to PFNs in Self::pfns(),

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