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

Larry H.
2009-05-30T09:07:32Z

On 10:57 Sat 30 May , Pekka Enberg wrote:
> 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.

For a second I thought it was Ingo who was writing this e-mail.
Apologies about the confusion.

What was the technical explanation and reasoning behind your remarks,
again?

Larry