[Webkit-unassigned] [Bug 65766] [GTK] OSAllocator::reserveUncommitted should not commit physical memory

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=65766


Landry Breuil <landry at openbsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |landry at openbsd.org




--- Comment #13 from Landry Breuil <landry at openbsd.org>  2012-09-17 12:22:57 PST ---
(In reply to comment #12)
> (From update of attachment 164321 [details])
> This looks great, do you happen to have any knowledge of the BSD VM system, and whether this fix may apply? – OpenBSD have the same problem (see https://bugs.webkit.org/show_bug.cgi?id=61137) I'm wondering if the #if guard should include OS(OPENBSD), OS(NETBSD) and/or OS(FREEBSD) in addition to OS(LINUX).

>From discussions i had with some of our VM devs, this wont work on OpenBSD - ie will blow at runtime, and apparently will throw away all the security measures (address space randomization and all). Don't ask me why, i'm just the messenger, and i don't understand how this whole stuff works.

As for bug 61137, it's just workarounding the fact that pre-allocating 1Gb at startup when ulimit -m is 512Mb will directly blow up. So even if we had a 'mechanism to allocate VM without committing the physical pages up front' i think this wouldnt work.

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