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Add EL2 examples#131

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thejpster wants to merge 2 commits intorust-embedded:mainfrom
thejpster:fun-with-el2
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Add EL2 examples#131
thejpster wants to merge 2 commits intorust-embedded:mainfrom
thejpster:fun-with-el2

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@thejpster thejpster commented Feb 21, 2026 •
edited by jonathanpallant
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Adds another batch of examples which all run at EL2.

  • HVC calls at EL2 go into the SVC handler
  • Information about Data Aborts, Prefetch Aborts, Undefined Exceptions, etc, appear in the Hyp Syndrome Register, and not where EL1 expects to find them (DFSR, IFAR, etc)
  • You return from an IRQ, HVC, or whatever, with an eret, so a while new batch of assembly trampolines were required
  • A feature was added to aarch32-rt to enable these new EL2 trampolines. This feature also skips putting you into EL1 automatically.

@jonathanpallant jonathanpallant marked this pull request as draft March 5, 2026 10:17
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@jonathanpallant jonathanpallant changed the title Add EL2 examples (requires #127 and #119) Add EL2 examples (requires #127) Mar 8, 2026
@thejpster
Dedicated EL2 examples.
8139e70 
* Adds more Hyp register details.
* A bunch of fixes to the docs
* Makes sure CI actually runs these and the SMP examples
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jonathanpallant commented Mar 8, 2026

Squashed and rebased.

@jonathanpallant jonathanpallant marked this pull request as ready for review March 8, 2026 12:21
@jonathanpallant jonathanpallant changed the title Add EL2 examples (requires #127) Add EL2 examples Mar 20, 2026
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@thejpster @jonathanpallant