Bug 313027

Summary: [BFCache] Add multi-process restoration for BFCache with Site Isolation
Product: WebKit Reporter: Basuke Suzuki <basuke>
Component: New BugsAssignee: Basuke Suzuki <basuke>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Basuke Suzuki
Reported 2026-04-22 14:05:07 PDT
Restore pages with cross-site iframes from BFCache under Site Isolation. When navigating back, the suspended page and its iframe processes are unsuspended, the WebCore BackForwardCache entries are restored, and the frame tree (including RemoteFrames) is reconstructed. The browsing context group is swapped back onto the page, preserving existing RemotePageProxy objects.
Attachments
Basuke Suzuki
Comment 1 2026-04-22 14:13:32 PDT
Basuke Suzuki
Comment 2 2026-04-22 14:13:48 PDT
EWS
Comment 3 2026-05-11 22:06:40 PDT
Committed 313059@main (fceeb850c1e2): <https://commits.webkit.org/313059@main> Reviewed commits have been landed. Closing PR #63355 and removing active labels.
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