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Date:   Wed, 6 Apr 2022 09:43:30 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Josh Poimboeuf <jpoimboe@redhat.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        kernel test robot <lkp@intel.com>, kbuild-all@lists.01.org,
        linux-kernel@vger.kernel.org, mbenes@suse.cz, x86@kernel.org,
        Steven Rostedt <rostedt@goodmis.org>
Subject: Re: drivers/gpu/drm/i915/i915.prelink.o: warning: objtool:
 __intel_wait_for_register_fw.cold()+0xce: relocation to !ENDBR:
 vlv_allow_gt_wake.cold+0x0
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References: <202204041241.Hw855BWm-lkp@intel.com>
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 <20220406000500.5hlaqy5zrdqsg5mg@treble>
 <87czhv11k1.ffs@tglx>
 <20220406053251.6dyfxrjmmgdwocfc@treble>
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On Tue, Apr 05, 2022 at 10:32:51PM -0700, Josh Poimboeuf wrote:
> More broadly, this issue could theoretically happen in some other places
> throughout the kernel tree, since _THIS_IP_ is fundamentally unreliable
> as currently written.
> 
> So we could look at making _THIS_IP_ more predictable.
> 
> Inline asm would work better ("lea 0(%rip), %[rip]"), but then you need
> an arch-dependent implementation...

Well, there's a ton of _THIS_IP_ instances all around, and it would be
unfortunate to have them grow into actual code :/