From: mingo@kernel.org (Ingo Molnar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/2] acpi, x86: Add SPCR table support
Date: Mon, 11 Dec 2017 15:42:18 +0100 [thread overview]
Message-ID: <20171211144218.fcycoxibyln5f44x@gmail.com> (raw)
In-Reply-To: <f078ada7-1e30-41cc-28dc-077ed2a5986d@redhat.com>
* Prarit Bhargava <prarit@redhat.com> wrote:
> If I disable "Serial Port Console Debug" in my BIOS I still see the SPCR configured:
>
> [root at prarit-lab ~]# dmesg | grep SPCR
> [ 0.000000] ACPI: SPCR 0x0000000069031000 000050 (v01
> 00000000 00000000)
>
> AFAICT the SPCR is always enabled on some systems.
Fair enough.
> > If so then we should pick up that serial console configuration and activate it,
> > regardless of any kernel boot options!
>
> I'm worried about someone who doesn't want a console on ttyS0 suddenly ending up
> with one. The SPCR could contain incorrect data, etc.
Yeah, that's not good.
Thanks,
Ingo
prev parent reply other threads:[~2017-12-11 14:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-07 17:29 [PATCH 0/2] acpi, x86: Add SPCR table support Prarit Bhargava
2017-12-07 17:29 ` [PATCH 1/2] acpi, spcr: Make SPCR avialable to other architectures Prarit Bhargava
2017-12-07 18:43 ` Timur Tabi
2017-12-07 19:05 ` Prarit Bhargava
2017-12-07 19:35 ` Timur Tabi
2017-12-08 19:42 ` Prarit Bhargava
2017-12-07 17:29 ` [PATCH 2/2] acpi, x86: Use SPCR table for earlycon on x86 Prarit Bhargava
2017-12-07 18:46 ` Timur Tabi
2017-12-07 19:03 ` Prarit Bhargava
2017-12-08 6:29 ` [PATCH 0/2] acpi, x86: Add SPCR table support Ingo Molnar
2017-12-08 14:29 ` Prarit Bhargava
2017-12-08 15:31 ` Jeffrey Hugo
2017-12-08 16:02 ` Prarit Bhargava
2017-12-10 20:40 ` Jon Masters
2017-12-11 14:42 ` Ingo Molnar [this message]
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