neel
fffd41bbf1
Re-arrange bits in the amd64/pmap 'pm_flags' field. ...
The least significant 8 bits of 'pm_flags' are now used for the IPI vector
to use for nested page table TLB shootdown.
Previously we used IPI_AST to interrupt the host cpu which is functionally
correct but could lead to misleading interrupt counts for AST handler. The
AST handler was also doing a lot more than what is required for the nested
page table TLB shootdown (EOI and IRET).
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fffd41bbf1