Re: [patch 0/5] Support for sanitization flag in low-level page allocator

From: Pekka Enberg
Date: Sat May 30 2009 - 04:01:36 EST

Larry H. wrote:
Furthermore, selective clearing doesn't solve the roots of the problem.
It's just adding bandages to a wound which never stops bleeding. I
proposed an initial page flag because we could use it later for
unconditional page clearing doing a one line change in a header file.

I see a lot of speculation on what works and what doesn't, but
there isn't much on the practical side of things, yet. I provided test
results that proved some of the comments wrong, and I've referenced
literature which shows the reasoning behind all this. What else can I do
to make you understand you are missing the point here?

Hey, if you want to add a CONFIG_ZERO_ALL_MEMORY_PARANOIA thing that can be disabled, go for it! But you have to find someone else to take the merge the SLAB bits because, quite frankly, I am not convinced it's worth it. And the hand waving you're doing here isn't really helping your case, sorry.

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