From: Matt Fleming <matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
To: Ard Biesheuvel <ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Matt Fleming
<matt.fleming-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
<x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>,
"linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org"
<hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
Leif Lindholm
<leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Roy Franz <roy.franz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Mark Salter <msalter-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH 2/2] efi: implement mandatory locking for UEFI Runtime Services
Date: Tue, 8 Jul 2014 10:52:47 +0100 [thread overview]
Message-ID: <20140708095247.GE27474@console-pimps.org> (raw)
In-Reply-To: <CAKv+Gu9HkJgsnzUAROVwPKaHGHRU9FwAp+eOT8N8kYDR3Dda+w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Tue, 08 Jul, at 11:45:03AM, Ard Biesheuvel wrote:
>
> Well, that is what is says in the comment:
> * ops.get_next_variable() is only called from register_efivars()
> * or efivar_update_sysfs_entries(),
> * which is protected by the BKL, so that path is safe.
Oops, so it does. That's a stale comment. I'll update it.
> I agree. So shall I update my patch to add a single spin_lock that is
> used by all wrappers?
> We will likely need the wrappers on ARM as well, only ia64 needs
> another approach (if desired)
Please do, that would be great!
--
Matt Fleming, Intel Open Source Technology Center
WARNING: multiple messages have this Message-ID (diff)
From: matt@console-pimps.org (Matt Fleming)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] efi: implement mandatory locking for UEFI Runtime Services
Date: Tue, 8 Jul 2014 10:52:47 +0100 [thread overview]
Message-ID: <20140708095247.GE27474@console-pimps.org> (raw)
In-Reply-To: <CAKv+Gu9HkJgsnzUAROVwPKaHGHRU9FwAp+eOT8N8kYDR3Dda+w@mail.gmail.com>
On Tue, 08 Jul, at 11:45:03AM, Ard Biesheuvel wrote:
>
> Well, that is what is says in the comment:
> * ops.get_next_variable() is only called from register_efivars()
> * or efivar_update_sysfs_entries(),
> * which is protected by the BKL, so that path is safe.
Oops, so it does. That's a stale comment. I'll update it.
> I agree. So shall I update my patch to add a single spin_lock that is
> used by all wrappers?
> We will likely need the wrappers on ARM as well, only ia64 needs
> another approach (if desired)
Please do, that would be great!
--
Matt Fleming, Intel Open Source Technology Center
next prev parent reply other threads:[~2014-07-08 9:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-02 10:10 [PATCH 1/2] efi/arm64: fix potential NULL dereference of efi.systab Ard Biesheuvel
2014-07-02 10:10 ` Ard Biesheuvel
[not found] ` <1404295802-28030-1-git-send-email-ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2014-07-02 10:10 ` [PATCH 2/2] efi: implement mandatory locking for UEFI Runtime Services Ard Biesheuvel
2014-07-02 10:10 ` Ard Biesheuvel
[not found] ` <1404295802-28030-2-git-send-email-ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2014-07-07 20:29 ` Matt Fleming
2014-07-07 20:29 ` Matt Fleming
[not found] ` <20140707202954.GC27474-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2014-07-07 20:43 ` Ard Biesheuvel
2014-07-07 20:43 ` Ard Biesheuvel
[not found] ` <CAKv+Gu91CQADTQ8KMjXQPwVDvW1XkUYO2E5=Mu=aAtrB8B3q_A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-08 8:54 ` Ard Biesheuvel
2014-07-08 8:54 ` Ard Biesheuvel
[not found] ` <CAKv+Gu8LbfuuEYyhAeu3dUiKHqzN_UFMbOjY0agVihbmmVL9CA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-08 9:29 ` Matt Fleming
2014-07-08 9:29 ` Matt Fleming
[not found] ` <20140708092958.GD27474-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2014-07-08 9:45 ` Ard Biesheuvel
2014-07-08 9:45 ` Ard Biesheuvel
[not found] ` <CAKv+Gu9HkJgsnzUAROVwPKaHGHRU9FwAp+eOT8N8kYDR3Dda+w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-08 9:52 ` Matt Fleming [this message]
2014-07-08 9:52 ` Matt Fleming
2014-07-02 10:13 ` [PATCH 1/2] efi/arm64: fix potential NULL dereference of efi.systab Ard Biesheuvel
2014-07-02 10:13 ` Ard Biesheuvel
[not found] ` <CAKv+Gu-SLQC82q7Rj5ZusbFxwysy7KpRhZ=vw1ipXu9kvq46aQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-02 14:29 ` Mark Salter
2014-07-02 14:29 ` Mark Salter
[not found] ` <1404311385.19665.15.camel-PDpCo7skNiwAicBL8TP8PQ@public.gmane.org>
2014-07-03 16:04 ` Ard Biesheuvel
2014-07-03 16:04 ` Ard Biesheuvel
2014-07-04 13:38 ` Catalin Marinas
2014-07-04 13:38 ` Catalin Marinas
[not found] ` <20140704133844.GG16404-5wv7dgnIgG8@public.gmane.org>
2014-07-04 13:54 ` Ard Biesheuvel
2014-07-04 13:54 ` Ard Biesheuvel
[not found] ` <CAKv+Gu_VJZuzio8oyDA4OKwaeZj3J4WY_kX4s-_zhs1rk35b7A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-04 15:32 ` Catalin Marinas
2014-07-04 15:32 ` Catalin Marinas
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