From: Tom Rini <trini@konsulko.com>
To: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Cc: u-boot@lists.denx.de, Andre Przywara <andre.przywara@arm.com>,
Heinrich Schuchardt <xypron.glpk@gmx.de>,
Alexander Graf <agraf@csgraf.de>
Subject: Re: [PATCH 1/1] efi_loader: stop watchdogs in ExitBootServices()
Date: Tue, 9 Nov 2021 12:55:26 -0500 [thread overview]
Message-ID: <20211109175526.GW24579@bill-the-cat> (raw)
In-Reply-To: <20211109101901.24015-2-heinrich.schuchardt@canonical.com>
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On Tue, Nov 09, 2021 at 11:19:01AM +0100, Heinrich Schuchardt wrote:
> The UEFI specification requires for ExitBootServices() that "the boot
> services watchdog timer is disabled". We already disable the software
> watchdog. We should additionally disable the hardware watchdogs.
>
> Reported-by: Andre Przywara <andre.przywara@arm.com>
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Let me start by saying thank you for bringing this up with UEFI folks as
well. To be clear, for right now I would much rather see U-Boot
continue to be non-complaint with UEFI in this regard and assume that a
running watchdog will be able to be handled by the running OS (which
tends to be the case, but not always as sunxi has just shown) than to
attempt to be complaint with the spec as it stands now as I am hopeful
that we can get this case handled in a way that matches long standing
industry practice.
--
Tom
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next prev parent reply other threads:[~2021-11-09 17:55 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-09 10:19 [PATCH 1/1] efi_loader: stop watchdogs in ExitBootServices() Heinrich Schuchardt
2021-11-09 10:19 ` Heinrich Schuchardt
2021-11-09 14:20 ` Michael Walle
2021-11-09 14:46 ` Mark Kettenis
2021-11-09 14:54 ` Michael Walle
2021-11-09 17:30 ` Heinrich Schuchardt
2021-11-09 17:55 ` Tom Rini [this message]
2021-11-09 18:15 ` Heinrich Schuchardt
2021-11-09 18:18 ` Tom Rini
2021-11-09 21:47 ` Andre Przywara
2021-11-09 23:45 ` Grant Likely
2023-01-28 8:57 Heinrich Schuchardt
2023-01-30 18:13 ` Tom Rini
2023-01-30 18:30 ` Tom Rini
2023-01-31 12:03 ` Ilias Apalodimas
2023-01-31 14:16 ` Simon Glass
2023-01-31 14:48 ` Heinrich Schuchardt
2023-01-31 15:07 ` Tom Rini
2023-02-01 8:32 ` Rasmus Villemoes
2023-02-01 9:00 ` Heinrich Schuchardt
2023-02-02 8:17 ` Etienne Carriere
2023-02-02 17:12 ` Simon Glass
2023-02-02 17:22 ` Tom Rini
2023-02-03 2:15 ` Simon Glass
2023-02-03 7:30 ` Rasmus Villemoes
2023-02-07 14:59 ` Michael Walle
2023-02-07 15:08 ` Heinrich Schuchardt
2023-02-07 15:29 ` Michael Walle
2023-02-07 15:30 ` Heinrich Schuchardt
2023-02-07 15:34 ` Michael Walle
2023-02-03 15:51 ` Tom Rini
2023-02-04 0:20 ` Simon Glass
2023-02-01 12:49 ` Mark Kettenis
2023-02-01 15:21 ` Tom Rini
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