From: Segher Boessenkool <segher@kernel.crashing.org>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "ajd@linux.ibm.com" <ajd@linux.ibm.com>,
"peterz@infradead.org" <peterz@infradead.org>,
"rostedt@goodmis.org" <rostedt@goodmis.org>,
"ardb@kernel.org" <ardb@kernel.org>,
"jbaron@akamai.com" <jbaron@akamai.com>,
"npiggin@gmail.com" <npiggin@gmail.com>,
Benjamin Gray <bgray@linux.ibm.com>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
"jpoimboe@kernel.org" <jpoimboe@kernel.org>
Subject: Re: [PATCH v3 5/6] powerpc/64: Add support for out-of-line static calls
Date: Thu, 6 Oct 2022 16:04:23 -0500 [thread overview]
Message-ID: <20221006210423.GV25951@gate.crashing.org> (raw)
In-Reply-To: <0c92ba89-4cad-524a-4c02-8064d451b7b6@csgroup.eu>
On Thu, Oct 06, 2022 at 08:50:31PM +0000, Christophe Leroy wrote:
> Le 06/10/2022 à 22:45, Segher Boessenkool a écrit :
> > I meant just an indicative code size number... 100 bytes, 100kB, 100MB,
> > or something like that :-) And, on 64 bit, which is what the question
> > was about!
>
> Ah, does the size really matters here ? I was thinking more in terms of
> performance when I made the comment.
Other than some unused code there should not be much performance impact
at all from enabling modules when not needed, on 64 bit. Security (in
depth) is a very different kettle of fish of course ;-)
Segher
next prev parent reply other threads:[~2022-10-06 21:09 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 5:32 [PATCH v3 0/6] Out-of-line static calls for powerpc64 ELF V2 Benjamin Gray
2022-10-05 5:32 ` [PATCH v3 1/6] powerpc/code-patching: Implement generic text patching function Benjamin Gray
2022-10-05 17:55 ` Christophe Leroy
2022-10-06 3:36 ` Benjamin Gray
2022-10-06 9:19 ` Christophe Leroy
2022-10-06 21:53 ` Benjamin Gray
2022-10-05 5:32 ` [PATCH v3 2/6] powerpc/module: Handle caller-saved TOC in module linker Benjamin Gray
2022-10-05 19:18 ` Christophe Leroy
2022-10-06 3:51 ` Andrew Donnellan
2022-10-06 4:39 ` Benjamin Gray
2022-10-05 5:32 ` [PATCH v3 3/6] powerpc/module: Optimise nearby branches in ELF V2 ABI stub Benjamin Gray
2022-10-05 19:21 ` Christophe Leroy
2022-10-06 8:24 ` Andrew Donnellan
2022-10-05 5:32 ` [PATCH v3 4/6] static_call: Move static call selftest to static_call_selftest.c Benjamin Gray
2022-10-05 19:22 ` Christophe Leroy
2022-10-05 5:32 ` [PATCH v3 5/6] powerpc/64: Add support for out-of-line static calls Benjamin Gray
2022-10-05 19:38 ` Christophe Leroy
2022-10-06 0:39 ` Michael Ellerman
2022-10-06 5:01 ` Benjamin Gray
2022-10-06 18:22 ` Segher Boessenkool
2022-10-06 18:38 ` Christophe Leroy
2022-10-06 20:45 ` Segher Boessenkool
2022-10-06 20:50 ` Christophe Leroy
2022-10-06 21:04 ` Segher Boessenkool [this message]
2022-10-05 5:32 ` [PATCH v3 6/6] powerpc: Add tests " Benjamin Gray
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