probe(arm64): Linux-style GICR discovery#304
Open
ryanbreen wants to merge 2 commits intodiagnostic/f13-gic-auditfrom
Open
probe(arm64): Linux-style GICR discovery#304ryanbreen wants to merge 2 commits intodiagnostic/f13-gic-auditfrom
ryanbreen wants to merge 2 commits intodiagnostic/f13-gic-auditfrom
Conversation
… breadcrumbs Walk GICR redistributor frames in 0x20000-byte strides, match GICR_TYPER[63:32] affinity against Breenix CPU MPIDR affinity, and store per-CPU RD bases for GICR init and diagnostic reads. Add UNBLOCK_BEFORE_SEND_SGI and UNBLOCK_AFTER_SEND_SGI AHCI ring breadcrumbs around the scheduler-side send_sgi() call without changing send_sgi() internals. Linux reference: /tmp/linux-v6.8/drivers/irqchip/irq-gic-v3.c:978-1011 (__gic_populate_rdist) and :1017-1045 (gic_iterate_rdists); /tmp/linux-v6.8/include/linux/irqchip/arm-gic-v3.h:238-249 (GICR_TYPER_LAST and GICR_TYPER_AFFINITY). Co-authored-by: Ryan Breen <ryan@ryanbreen.com> Co-authored-by: Claude Code <noreply@anthropic.com>
Document the F14 Parallels sweep, including redistributor map output, before/after GICR_STATE comparison, per-run AHCI timeout counts, and the FAIL verdict. F14 fixed GICR frame discovery for CPUs 1-7 but did not close the AHCI timeout corridor, so F15 should target PMR=0xf0 or the idle-scan/send_sgi handoff. Co-authored-by: Ryan Breen <ryan@ryanbreen.com> Co-authored-by: Claude Code <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Validation
Verdict
F14 fixes the non-CPU0 GICR mapping/read defect, but does not close the AHCI timeout corridor. Runs 2 and 3 still had AHCI timeouts; corruption markers stayed at 0. Follow-up filed as Beads issue breenix-xk8.