Re: [git pull] core, x86: make LIST_POISON less deadly

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To: Linus Torvalds <torvalds@...>

Cc: Ingo Molnar <mingo@...>, Linux Kernel Mailing List <linux-kernel@...>, Andrew Morton <akpm@...>, Avi Kivity <avi@...>

Subject: Re: [git pull] core, x86: make LIST_POISON less deadly

Date: Monday, July 14, 2008 - 2:35 pm

Linus Torvalds <torvalds@linux-foundation.org> writes:
quoted text>
> Why not pick something that is *guaranteed* to fault? The above looks like 
> any future setup that supports 41 bits of addressing and has extended the 
> page tables (yes, it will happen eventually) will find that to be a 
> perfectly valid address?

When that happens then it will be either unmapped (and fault anyways)
or the kernel has to be changed to 5 level page tables first and then 
surely the poison value could change too.

-Andi
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Messages in current thread:

[git pull] core, x86: make LIST_POISON less deadly, Ingo Molnar, (Mon Jul 14, 10:48 am)

Re: [git pull] core, x86: make LIST_POISON less deadly, Linus Torvalds, (Mon Jul 14, 11:03 am)

Re: [git pull] core, x86: make LIST_POISON less deadly, Andi Kleen, (Mon Jul 14, 2:35 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Linus Torvalds, (Mon Jul 14, 2:42 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Ingo Molnar, (Mon Jul 14, 11:12 am)

Re: [git pull] core, x86: make LIST_POISON less deadly, Linus Torvalds, (Mon Jul 14, 11:59 am)

Re: [git pull] core, x86: make LIST_POISON less deadly, Andi Kleen, (Mon Jul 14, 2:33 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Linus Torvalds, (Mon Jul 14, 2:42 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Andi Kleen, (Mon Jul 14, 3:11 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Linus Torvalds, (Mon Jul 14, 3:30 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Andi Kleen, (Mon Jul 14, 3:42 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Avi Kivity, (Mon Jul 14, 12:08 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Linus Torvalds, (Mon Jul 14, 12:26 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Ingo Molnar, (Mon Jul 14, 12:34 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Ingo Molnar, (Mon Jul 14, 12:07 pm)

Re: [git pull] core, x86: make LIST_POISON less deadly, Avi Kivity, (Mon Jul 14, 11:53 am)


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Re: [git pull] core, x86: make LIST_POISON less deadly

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