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…PTEs with unsupported GPA sizes
aswaterman
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Apr 21, 2026
pipelinedestroyer
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May 20, 2026
Incorporates upstream changes: - PTW: access vs guest page fault exception prioritization for Stage-1 PTEs with unsupported GPA sizes (chipsalliance#3789) - PTW: traverse check GPA bits higher than HGATP mode also if table (chipsalliance#3788) - PeripheryBus: named in/out xbars in getOrElse path - TraceEncoderController: add hartId parameter Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Related issue: follows #3788
Type of change: bug report
Impact: functional fix
Development Phase: implementation
Release Notes
An access exception was raised instead of guest page fault exception for Stage-1 PTEs with unsupported GPA sizes.
PTW:
invalid_paddrfrom Stage-1 (VS-mode) underneath Stage-2. Instead, rely on theinvalid_gpacheck from PTW Hypervisor bug fixes: check GPA bits higher than HGATP.Mode #3591.ae, becausegf(guest fault) is higher priority in the fault prioritization checkExceptions list.TLB:
gf_*_arrayso that a PTW guest fault is higher priority than access exception, following the same example aspf_*_array.