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| -rw-r--r-- | docs/system/devices/nvme.rst | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/docs/system/devices/nvme.rst b/docs/system/devices/nvme.rst index 2a3af268f7..4ea957baed 100644 --- a/docs/system/devices/nvme.rst +++ b/docs/system/devices/nvme.rst @@ -271,9 +271,15 @@ The virtual namespace device supports DIF- and DIX-based protection information ``pil=UINT8`` (default: ``0``) Controls the location of the protection information within the metadata. Set - to ``1`` to transfer protection information as the first eight bytes of - metadata. Otherwise, the protection information is transferred as the last - eight bytes. + to ``1`` to transfer protection information as the first bytes of metadata. + Otherwise, the protection information is transferred as the last bytes of + metadata. + +``pif=UINT8`` (default: ``0``) + By default, the namespace device uses 16 bit guard protection information + format (``pif=0``). Set to ``2`` to enable 64 bit guard protection + information format. This requires at least 16 bytes of metadata. Note that + ``pif=1`` (32 bit guards) is currently not supported. Virtualization Enhancements and SR-IOV (Experimental Support) ------------------------------------------------------------- |