linux-kernel - Re: linux-next: build warnings after merge of the block tree

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Date:   Wed, 12 Apr 2023 10:35:04 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Josh Poimboeuf <jpoimboe@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build warnings after merge of the block tree

On 4/12/23 10:25?AM, Josh Poimboeuf wrote:
> On Wed, Apr 12, 2023 at 01:44:00PM +0200, Peter Zijlstra wrote:
>> On Tue, Apr 11, 2023 at 05:14:00PM -0700, Josh Poimboeuf wrote:
>>
>>> Peter, what do you think, should we make track uaccess state across
>>> function boundaries?
>>
>> So IIRC the goal was to explicitly dis-allow that. You want minimal code
>> executed with STAC and hence disallow calling stuff.
> 
> I guess I was wondering if we could make an exception for calls to
> static IPA-optimized functions, so we wouldn't have to scramble to "fix"
> compiler optimizations.
> 
> But for now, yeah let's just keep it simple.
> 
> Jens, can you confirm this works?  I added __noclone instead of removing
> static.

Yep, works for me.

-- 
Jens Axboe