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Add note about PTW #553

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Mar 5, 2025
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Add note about PTW #553

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Add note about PTW
tariqkurd-repo Mar 5, 2025
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Update src/cheri-pte-ext.adoc
tariqkurd-repo Mar 5, 2025
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2 changes: 2 additions & 0 deletions src/cheri-pte-ext.adoc
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Expand Up @@ -26,6 +26,8 @@ NOTE: The description below assumes that {cheri_pte_ext_name} has been implement

The minimum level of PTE support is to set CW to 1 in all PTEs intended for storing capabilities (i.e. private anonymous mappings) and leave <<sstatusreg_pte,sstatus>>.UCRG and CRG in all PTEs set to 0, which will allow capabilities with their tags set to be loaded and stored successfully.

NOTE: Hardware initiated memory accesses from the page-table walker are not authorized by a capability.

[#cheri_pte_fault]
=== CHERI PTE page faults

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