linux-kernel - Re: [PATCH v2 01/12] objtool: Generic annotation infrastructure

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Message-ID: <20241120010424.thsbdwfwz2e7elza@jpoimboe>
Date: Tue, 19 Nov 2024 17:04:24 -0800
From: Josh Poimboeuf <jpoimboe@...hat.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: seanjc@...gle.com, pbonzini@...hat.com, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, x86@...nel.org, kvm@...r.kernel.org,
	jthoughton@...gle.com
Subject: Re: [PATCH v2 01/12] objtool: Generic annotation infrastructure

On Tue, Nov 19, 2024 at 04:31:25PM -0800, Josh Poimboeuf wrote:
> On Sat, Nov 16, 2024 at 10:33:31AM +0100, Peter Zijlstra wrote:
> > On Fri, Nov 15, 2024 at 10:38:28AM -0800, Josh Poimboeuf wrote:
> > > On Mon, Nov 11, 2024 at 12:59:36PM +0100, Peter Zijlstra wrote:
> > > > +#define ASM_ANNOTATE(x)						\
> > > > +	"911:\n\t"						\
> > > > +	".pushsection .discard.annotate,\"M\",@progbits,8\n\t"	\
> > > > +	".long 911b - .\n\t"					\
> > > > +	".long " __stringify(x) "\n\t"				\
> > > > +	".popsection\n\t"
> > > 
> > > Why mergeable and progbits?
> > 
> > In order to get sh_entsize ?
> 
> Is that a guess?  If so, it's not very convincing as I don't see what
> entsize would have to do with it.

Oh, nevermind... I see it's a gas syntax issue.

-- 
Josh