Invalidating all

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(The instruction may also invalidate global translations, as well as mappings associated with other PCIDs.) — All-context, including globals.

If the INVPCID type is 1, the logical processor invalidates all mappings—except global translations—associated with the PCID specified in the INVPCID descriptor.

This instruction takes a single operand, which is a linear address.

The instruction invalidates any TLB entries that are for a page number corresponding to the linear address and that are associated with the current PCID.

Internal details: To accurately respond to queries, Impala must have current metadata about those databases and tables that clients query directly.

Therefore, if some other entity modifies information used by Impala in the metastore that Impala and Hive share, the information cached by Impala must be updated.

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