src/mte_tag: sw control eliding tag checks on per-pointer basis #12
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Even though page table encoding allows software to control whether a page is tagged or not, software may need to avoid tag checks even though page is tagged. Such situations are memory accesses to local objects to a function. Only when pointer to local objects is passed to another function, it is required to be checked for tags. Thus providing a control in spec for eliding tag checks on per-pointer basis using a special bypass `pointer_tag` value of 0. Signed-off-by: Deepak Gupta <[email protected]>
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Spec is still in strawman phase. |
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Even though page table encoding allows software to control whether a page is tagged or not, software may need to avoid tag checks even though page is tagged. Such situations are memory accesses to local objects to a function. Only when pointer to local objects is passed to another function, it is required to be checked for tags. Thus providing a control in spec for eliding tag checks on per-pointer basis using a special bypass
pointer_tagvalue of 0.