From: Peter Zijlstra <peterz@infradead.org>
To: Marco Elver <elver@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>,
Borislav Petkov <bp@alien8.de>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
clang-built-linux <clang-built-linux@googlegroups.com>,
"Paul E . McKenney" <paulmck@kernel.org>,
Dmitry Vyukov <dvyukov@google.com>,
Alexander Potapenko <glider@google.com>,
kasan-dev <kasan-dev@googlegroups.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH -tip] kcov: Make runtime functions noinstr-compatible
Date: Thu, 4 Jun 2020 22:52:19 +0200 [thread overview]
Message-ID: <20200604205219.GZ2483@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <CANpmjNML7hBNpYGL81M1-=rrYn5PAJPTxFc_Jn0DVhUgwJV8Hg@mail.gmail.com>
On Thu, Jun 04, 2020 at 04:23:38PM +0200, Marco Elver wrote:
> Sadly no. 'noinstr' implies 'notrace', but also places the function in
> the .noinstr.text section for the purpose of objtool checking.
Not only the compile time checking, but also for purpose of runtime
exclusion for things like kprobes and hw-breakpoints.
next prev parent reply other threads:[~2020-06-04 20:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-04 9:50 [PATCH -tip] kcov: Make runtime functions noinstr-compatible Marco Elver
2020-06-04 11:09 ` Peter Zijlstra
2020-06-04 11:28 ` Marco Elver
2020-06-04 14:02 ` Andrey Konovalov
2020-06-04 14:23 ` Marco Elver
2020-06-04 20:52 ` Peter Zijlstra [this message]
2020-06-04 14:37 ` Peter Zijlstra
2020-06-04 16:03 ` Peter Zijlstra
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