From: Peter Zijlstra <peterz@infradead.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: seanjc@google.com, pbonzini@redhat.com, tglx@linutronix.de,
linux-kernel@vger.kernel.org, x86@kernel.org,
kvm@vger.kernel.org, jthoughton@google.com
Subject: Re: [PATCH v2 04/12] objtool: Convert instrumentation_{begin,end}() to ANNOTATE
Date: Sat, 16 Nov 2024 10:51:52 +0100 [thread overview]
Message-ID: <20241116095152.GM22801@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20241116093626.GI22801@noisy.programming.kicks-ass.net>
On Sat, Nov 16, 2024 at 10:36:26AM +0100, Peter Zijlstra wrote:
> On Fri, Nov 15, 2024 at 10:40:08AM -0800, Josh Poimboeuf wrote:
> > On Mon, Nov 11, 2024 at 12:59:39PM +0100, Peter Zijlstra wrote:
> > > +++ b/include/linux/objtool.h
> > > @@ -51,13 +51,16 @@
> > > ".long 998b\n\t" \
> > > ".popsection\n\t"
> > >
> > > -#define ASM_ANNOTATE(x) \
> > > - "911:\n\t" \
> > > +#define __ASM_ANNOTATE(s, x) \
> > > ".pushsection .discard.annotate,\"M\",@progbits,8\n\t" \
> > > - ".long 911b - .\n\t" \
> > > + ".long " __stringify(s) "b - .\n\t" \
> >
> > It would probably be better for __ASM_ANNOTATE's callers to pass in the
> > full label name (e.g. '911b') since they know where the label is? It
> > could even be a named label.
>
> I have this somewhere later, changing it here would be a pain because
> the existing annotations dont do it like that.
Reading is hard, yes let me do what you said.
next prev parent reply other threads:[~2024-11-16 9:51 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-11 11:59 [PATCH v2 00/12] x86/kvm/emulate: Avoid RET for FASTOPs Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 01/12] objtool: Generic annotation infrastructure Peter Zijlstra
2024-11-15 18:38 ` Josh Poimboeuf
2024-11-16 9:33 ` Peter Zijlstra
2024-11-20 0:31 ` Josh Poimboeuf
2024-11-20 1:04 ` Josh Poimboeuf
2024-11-20 8:52 ` Peter Zijlstra
2024-11-20 16:03 ` Josh Poimboeuf
2024-11-20 16:03 ` Josh Poimboeuf
2024-11-21 11:46 ` Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 02/12] objtool: Convert ANNOTATE_NOENDBR to ANNOTATE Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 03/12] objtool: Convert ANNOTATE_RETPOLINE_SAFE " Peter Zijlstra
2024-11-15 18:39 ` Josh Poimboeuf
2024-11-16 9:34 ` Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 04/12] objtool: Convert instrumentation_{begin,end}() " Peter Zijlstra
2024-11-15 18:40 ` Josh Poimboeuf
2024-11-16 9:36 ` Peter Zijlstra
2024-11-16 9:51 ` Peter Zijlstra [this message]
2024-11-16 10:06 ` Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 05/12] objtool: Convert VALIDATE_UNRET_BEGIN " Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 06/12] objtool: Convert ANNOTATE_IGNORE_ALTERNATIVE " Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 07/12] objtool: Convert ANNOTATE_INTRA_FUNCTION_CALLS " Peter Zijlstra
2024-11-15 18:40 ` Josh Poimboeuf
2024-11-16 9:37 ` Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 08/12] objtool: Collapse annotate sequences Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 09/12] x86/nospec: JMP_NOSPEC Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 10/12] x86,nospec: Simplify {JMP,CALL}_NOSPEC (part 2) Peter Zijlstra
2024-11-15 18:40 ` Josh Poimboeuf
2024-11-16 9:39 ` Peter Zijlstra
2024-11-11 11:59 ` [PATCH v2 11/12] x86/kvm/emulate: Implement test_cc() in C Peter Zijlstra
2024-11-11 17:13 ` Sean Christopherson
2024-11-11 11:59 ` [PATCH v2 12/12] x86/kvm/emulate: Avoid RET for fastops Peter Zijlstra
2024-11-11 16:27 ` Peter Zijlstra
2024-11-11 17:26 ` Sean Christopherson
2024-11-11 18:28 ` Peter Zijlstra
2024-11-15 18:41 ` Josh Poimboeuf
2024-11-16 9:39 ` Peter Zijlstra
2024-11-11 17:27 ` [PATCH v2 00/12] x86/kvm/emulate: Avoid RET for FASTOPs Sean Christopherson
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