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From: Tom Rini <trini@konsulko.com>
To: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Cc: Andre Przywara <andre.przywara@arm.com>,
	Simon Glass <sjg@chromium.org>,
	Samuel Holland <samuel@sholland.org>, Stefan Roese <sr@denx.de>,
	Harald Seiler <hws@denx.de>,
	u-boot@lists.denx.de, Jagan Teki <jagan@amarulasolutions.com>,
	Bin Meng <bmeng.cn@gmail.com>, Sean Anderson <seanga2@gmail.com>
Subject: Re: [PATCH v3 0/6] Improved sysreset/watchdog uclass integration
Date: Tue, 9 Nov 2021 08:50:37 -0500	[thread overview]
Message-ID: <20211109135037.GO24579@bill-the-cat> (raw)
In-Reply-To: <6a9c8382-0d10-3d0f-6720-8778404ceee0@canonical.com>

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On Tue, Nov 09, 2021 at 09:00:05AM +0100, Heinrich Schuchardt wrote:

[snip]
> > I am still puzzled about this, if I read the UEFI spec correctly, the
> > 5 minutes watchdog timer is for EFI applications using boot services?
> > So grub, for instance. But the description of ExitBootServices tells me
> > that the: "boot services watchdog timer is disabled"?
> > So it should not affect Linux booting (after the EFI stub is done)?
> 
> Currently we only disable the software watchdog (efi_tpl = TPL_HIGH_LEVEL;)
> We should call wdt_stop_all() too. I will create a patch for that.

Lets use this as a chance to bring up the issue with the relevant part
of the UEFI forum.  Turning off a running watchdog is a bad idea in
places where Arm is pushing SystemReady IR (and I would argue other
specs as well, but..).

-- 
Tom

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  reply	other threads:[~2021-11-09 13:50 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-04  3:55 [PATCH v3 0/6] Improved sysreset/watchdog uclass integration Samuel Holland
2021-11-04  3:55 ` [PATCH v3 1/6] sysreset: Add uclass Kconfig dependency to drivers Samuel Holland
2021-11-04  7:46   ` Stefan Roese
2021-11-04  3:55 ` [PATCH v3 2/6] sysreset: Mark driver probe functions as static Samuel Holland
2021-11-04  7:46   ` Stefan Roese
2021-11-04  3:55 ` [PATCH v3 3/6] sysreset: watchdog: Move watchdog reference to plat data Samuel Holland
2021-11-04  7:46   ` Stefan Roese
2021-11-04  3:55 ` [PATCH v3 4/6] watchdog: Automatically register device with sysreset Samuel Holland
2021-11-04  7:48   ` Stefan Roese
2021-11-04  9:34     ` Heinrich Schuchardt
2021-11-04  3:55 ` [PATCH v3 5/6] sunxi: Avoid duplicate reset_cpu with SYSRESET enabled Samuel Holland
2021-11-04  7:48   ` Stefan Roese
2021-11-04  3:55 ` [PATCH v3 6/6] sunxi: Use sysreset framework for poweroff/reset Samuel Holland
2021-11-04  7:48   ` Stefan Roese
2021-11-04 10:37 ` [PATCH v3 0/6] Improved sysreset/watchdog uclass integration Stefan Roese
2021-11-04 23:11   ` Andre Przywara
2021-11-05  1:21     ` Stefan Roese
2021-11-05  2:02       ` Simon Glass
2021-11-05 10:04         ` Andre Przywara
2021-11-05 11:14           ` Stefan Roese
2021-11-05 14:21             ` Tom Rini
2021-11-05 16:12               ` Simon Glass
2021-11-05 17:07                 ` Andre Przywara
2021-11-05 19:23                   ` Simon Glass
2021-11-05 18:37                 ` Heinrich Schuchardt
2021-11-05 19:17                   ` Tom Rini
2021-11-05 20:38                     ` Heinrich Schuchardt
2021-11-05 22:56                       ` Tom Rini
2021-11-06  1:52                         ` Andre Przywara
2021-11-06  3:55                           ` Heinrich Schuchardt
2021-11-06 13:53                             ` Tom Rini
2021-11-07 11:18                               ` Heinrich Schuchardt
2021-11-08 15:58                                 ` Simon Glass
2021-11-08 16:05                                   ` Tom Rini
2021-11-08 16:09                                     ` Simon Glass
2021-11-08 16:13                                       ` Tom Rini
2021-11-08 16:17                                     ` Heinrich Schuchardt
2021-11-09  0:09                                       ` Simon Glass
2021-11-09  0:25                                         ` Tom Rini
2021-11-09  1:37                                       ` Andre Przywara
2021-11-09  8:00                                         ` Heinrich Schuchardt
2021-11-09 13:50                                           ` Tom Rini [this message]
2021-11-09 14:26                                             ` Andre Przywara
2021-11-09 14:34                                               ` Heinrich Schuchardt
2021-11-09 15:09                                                 ` Grant Likely
2021-11-06 13:52                           ` Tom Rini

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