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From: Junio C Hamano <gitster@pobox.com>
To: "brian m. carlson" <sandals@crustytoothpaste.net>
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Carlo Marcelo Arenas Belón" <carenas@gmail.com>,
	git@vger.kernel.org, pcre-dev@exim.org
Subject: Re: [RFC PATCH 1/2] grep: fallback to interpreter if JIT fails with pcre1
Date: Mon, 10 Dec 2018 15:42:36 +0900	[thread overview]
Message-ID: <xmqqtvjlkhlv.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20181210004252.GK890086@genre.crustytoothpaste.net> (brian m. carlson's message of "Mon, 10 Dec 2018 00:42:52 +0000")

"brian m. carlson" <sandals@crustytoothpaste.net> writes:

> Considering that some Linux users use PaX kernels with standard
> distributions and that most BSD kernels can be custom-compiled with a
> variety of options enabled or disabled, I think this is something we
> should detect dynamically.
> ...
> My view is that JIT is a nice performance optimization, but it's
> optional. I honestly don't think it should even be exposed through the
> API: if it works, then things are faster, and if it doesn't, then
> they're not. I don't see the value in an option for causing things to be
> broken if someone improves the security of the system.

I agree to both of these two points.  Thanks for a thoughtful
discussion, all.

  parent reply	other threads:[~2018-12-10  6:42 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-09 23:00 [RFC PATCH 0/2] fallback to interpreter if JIT fails with pcre Carlo Marcelo Arenas Belón
2018-12-09 23:00 ` [RFC PATCH 1/2] grep: fallback to interpreter if JIT fails with pcre1 Carlo Marcelo Arenas Belón
2018-12-09 23:51   ` Ævar Arnfjörð Bjarmason
2018-12-10  0:42     ` brian m. carlson
2018-12-10  1:25       ` Carlo Arenas
2018-12-10  6:42       ` Junio C Hamano [this message]
2018-12-10  8:24       ` Ævar Arnfjörð Bjarmason
2018-12-11 20:11         ` Carlo Arenas
2018-12-11 20:51           ` Ævar Arnfjörð Bjarmason
2018-12-10  6:54     ` Junio C Hamano
2018-12-10  6:48   ` Junio C Hamano
2018-12-09 23:00 ` [RFC PATCH 2/2] grep: fallback to interpreter if JIT fails with pcre2 Carlo Marcelo Arenas Belón
2018-12-10  7:00   ` Junio C Hamano

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