A short addition. I also couldn't find a specific check for the user/supervisor Page Table Attribute anywhere.
Are there parts in the code, where specific bits are checked or does gem5 uses some other kind of implementation here?
Gesendet: Freitag, 29. September 2023 um 12:04 Uhr
Von: "reverent.green--- via gem5-users" <gem5-users@gem5.org>
An: gem5-users@gem5.org
Cc: reverent.gr...@web.de
Betreff: [gem5-users] Squashing Instructions after Page Table Fault
Von: "reverent.green--- via gem5-users" <gem5-users@gem5.org>
An: gem5-users@gem5.org
Cc: reverent.gr...@web.de
Betreff: [gem5-users] Squashing Instructions after Page Table Fault
Hello,
I am currently trying to locate the code that is used to squash instructions if a Page Table Fault is triggered in the O3 CPU.
After using the PageTableWalker Debug Flags, my current guess would be gem5/src/arch/x86/pagetable_walker.cc in line 199.
Furthermore I inspected the files in the src/cpu/o3 directory, but couldn't find anything specific to squashing instructions after a fault.
Is my assumption correct, that the O3 CPU implementation does not handle these things on its own, but the architectural part of the implementation does it? I am missing something, feel free to point it out.
Thank you in advance for your help.
Kind regards
Robin
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