• Maya Lekova's avatar
    Revert "[heap] Fix tracking of code pages for V8 stack unwinder" · 027e5888
    Maya Lekova authored
    This reverts commit af5f437c.
    
    Reason for revert: Seems to break TSAN - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/33286?
    
    Original change's description:
    > [heap] Fix tracking of code pages for V8 stack unwinder
    > 
    > When a compaction space allocates a new code page, that pages needs to
    > be added to the Isolate::code_pages_ array used for stack unwinding.
    > Since the array is owned by the main thread, compaction thread cannot
    > directly modify it. Because of that code pages are added upon merging
    > of the compaction space to the main spage in MergeLocalSpace.
    > 
    > The bug was that all code pages coming from the compaction space
    > were added to the code_pages_ array. However, some of the pages are
    > not newly allocated but merely borrowed from the main space.
    > 
    > This CL introduces a new page flag for marking pages that are borrowed
    > during compaction and skips them in MergeLocalSpace.
    > 
    > Bug: v8:10900
    > Change-Id: I786dc5747bd7c785ae58dfd8b841c00774efb15e
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2416500
    > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
    > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
    > Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
    > Cr-Commit-Position: refs/heads/master@{#69992}
    
    TBR=ulan@chromium.org,jkummerow@chromium.org,dinfuehr@chromium.org
    
    Change-Id: I13f8b64014750af95423166152dc9bee8cec12d0
    No-Presubmit: true
    No-Tree-Checks: true
    No-Try: true
    Bug: v8:10900
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2418395Reviewed-by: 's avatarMaya Lekova <mslekova@chromium.org>
    Commit-Queue: Maya Lekova <mslekova@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#69993}
    027e5888
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