From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"patches@lists.linux.dev" <patches@lists.linux.dev>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>,
Carlos O'Donell <carlos@redhat.com>
Subject: Re: [PATCH v4 2/3] random: introduce generic vDSO getrandom() implementation
Date: Sat, 19 Nov 2022 12:43:31 +0100 [thread overview]
Message-ID: <Y3jBY4p2hEKDaUm+@zx2c4.com> (raw)
In-Reply-To: <2571f72a-3420-977f-7b08-8f6216bba6a8@csgroup.eu>
On Sat, Nov 19, 2022 at 07:51:21AM +0000, Christophe Leroy wrote:
>
>
> Le 19/11/2022 à 01:04, Jason A. Donenfeld a écrit :
> > On Sat, Nov 19, 2022 at 12:55:02AM +0100, Jason A. Donenfeld wrote:
> >> Sorry if I'm a bit slow here to grok what's up.
>
> Maybe I should also have mentionned commit ce7d8056e38b ("powerpc/vdso:
> Prepare for switching VDSO to generic C implementation.") for you to
> have a complete picture.
>
> >
> > Okay, I think I see it now. That's a complicated patch for a simple idea
> > because gettime is more complicated than getrandom. I suspect what you
> > want is something like the below, correct? Seems easy enough.
>
> Yes it is exactly that, powerpc will then call __cvdso_getrandom_data()
> directly and pass rng_info pointer.
Okay, I'll do that and send out a v+1.
Jason
next prev parent reply other threads:[~2022-11-19 11:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-18 17:28 [PATCH v4 0/3] implement getrandom() in vDSO Jason A. Donenfeld
2022-11-18 17:28 ` [PATCH v4 1/3] random: add vgetrandom_alloc() syscall Jason A. Donenfeld
2022-11-19 0:20 ` Jason A. Donenfeld
2022-11-18 17:28 ` [PATCH v4 2/3] random: introduce generic vDSO getrandom() implementation Jason A. Donenfeld
2022-11-18 19:34 ` Christophe Leroy
2022-11-18 23:55 ` Jason A. Donenfeld
2022-11-19 0:04 ` Jason A. Donenfeld
2022-11-19 7:51 ` Christophe Leroy
2022-11-19 11:43 ` Jason A. Donenfeld [this message]
2022-11-19 12:12 ` Jason A. Donenfeld
2022-11-18 17:28 ` [PATCH v4 3/3] x86: vdso: Wire up getrandom() vDSO implementation Jason A. Donenfeld
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