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Date:   Wed, 12 Apr 2023 13:44:00 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Josh Poimboeuf <jpoimboe@kernel.org>
Cc:     Jens Axboe <axboe@kernel.dk>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>
Subject: Re: linux-next: build warnings after merge of the block tree
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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.