diff --git a/svadu.adoc b/svadu.adoc index e7fa8fe..a7ef022 100644 --- a/svadu.adoc +++ b/svadu.adoc @@ -20,10 +20,10 @@ A/D bits. The A and D bits are managed by these extensions as follows: as part of conditionally making the update. Updates of the A bit may be performed as a result of speculation, even if the associated memory access ultimately is not performed architecturally. However, updates to the D bit - must be exact (i.e., non-speculative), and observed in program order by the - local hart. When two-stage address translation is active, updates of the D bit - in G-stage PTEs may be performed as a result of speculative updates of the A - bit in VS-stage PTEs. + + by an explicit store must be exact (i.e., non-speculative), and observed in + program order by the local hart. When two-stage address translation is active, + updates of the D bit in G-stage PTEs may be performed as a result of + speculative updates of the A bit in VS-stage PTEs. + + The PTE update must appear in the global memory order before the memory access that caused the PTE update and before any subsequent explicit memory access to