Thread (46 messages) 46 messages, 9 authors, 2020-10-27

Re: [PATCH 08/10] x86: remove address space overrides using set_fs()

From: Christoph Hellwig <hch@lst.de>
Date: 2020-08-29 09:25:38
Also in: linux-arch, linux-fsdevel, lkml

On Thu, Aug 27, 2020 at 11:15:12AM -0700, Linus Torvalds wrote:
quoted
 SYM_FUNC_START(__put_user_2)
-       ENTER
-       mov TASK_addr_limit(%_ASM_BX),%_ASM_BX
+       LOAD_TASK_SIZE_MAX
        sub $1,%_ASM_BX
It's even more obvious here. We load a constant and then immediately
do a "sub $1" on that value.

It's not a huge deal, you don't have to respin the series for this, I
just wanted to point it out so that people are aware of it and if I
forget somebody else will hopefully remember that "we should fix that
too".
The changes seem easy enough and I need to respin at least for the
lkdtm changes, and probaby also for a pending fix in the low-level
x86 code that will hopefully be picked up for 5.9.

But the more important questions is: how do we want to pick the series
up?  Especially due to the splice changes I really want it to be in
linux-next as long as possible.
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