Thread (39 messages) 39 messages, 4 authors, 2020-08-27

Re: [PATCH 08/11] x86: make TASK_SIZE_MAX usable from assembly code

From: Kees Cook <hidden>
Date: 2020-08-18 19:59:19
Also in: linux-arch, linux-fsdevel, lkml

On Tue, Aug 18, 2020 at 09:55:39PM +0200, Christoph Hellwig wrote:
On Tue, Aug 18, 2020 at 12:44:49PM -0700, Kees Cook wrote:
quoted
On Mon, Aug 17, 2020 at 09:32:09AM +0200, Christoph Hellwig wrote:
quoted
For 64-bit the only hing missing was a strategic _AC, and for 32-bit we
typo: thing
quoted
need to use __PAGE_OFFSET instead of PAGE_OFFSET in the TASK_SIZE
definition to escape the explicit unsigned long cast.  This just works
because __PAGE_OFFSET is defined using _AC itself and thus never needs
the cast anyway.
Shouldn't this be folded into the prior patch so there's no bisection
problem?
I didn't see a problem bisecting, do you have something particular in
mind?
Oh, I misunderstood this patch to be a fix for compilation. Is this just
a correctness fix?

-- 
Kees Cook
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