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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: linux-efi <linux-efi@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 1/2] efi: Disable runtime services on RT
Date: Tue, 28 Sep 2021 16:24:34 +0200	[thread overview]
Message-ID: <20210928142434.uqhkd3ribja6j654@linutronix.de> (raw)
In-Reply-To: <CAMj1kXG5-i5LqnQrjK79KWZYTPO4C4fF32KhQexj8WsHLQM_Lg@mail.gmail.com>

On 2021-09-28 15:34:47 [+0200], Ard Biesheuvel wrote:
> Are you sure you want to disable EFI runtime services on all x86
> systems with PREEMPT_RT as well?

The only problem that I am aware of is that you need to reboot with
enabled runtime service (via bootargs, #2) in order to alter boot loader
settings.
I'm not aware of any other shortcomings. There are no guarantees how
long an EFI service routine may take.
That patch is in the RT queue since v4.18-rc8-rt1.

Sebastian

  reply	other threads:[~2021-09-28 14:24 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-24 13:49 [PATCH 0/2] efi: Disable runtime services on RT Sebastian Andrzej Siewior
2021-09-24 13:49 ` [PATCH 1/2] " Sebastian Andrzej Siewior
2021-09-28 13:30   ` Ard Biesheuvel
2021-09-28 13:33     ` Sebastian Andrzej Siewior
2021-09-28 13:34       ` Ard Biesheuvel
2021-09-28 14:24         ` Sebastian Andrzej Siewior [this message]
2021-10-20  6:09           ` joeyli
2021-10-20  6:28             ` Sebastian Andrzej Siewior
2021-10-20  6:47               ` joeyli
2021-10-20  7:20                 ` Sebastian Andrzej Siewior
2021-09-28 20:28         ` Thomas Gleixner
2021-09-28 20:41           ` Ard Biesheuvel
2021-09-24 13:49 ` [PATCH 2/2] efi: Allow efi=runtime Sebastian Andrzej Siewior

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