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From: Elliott Mitchell <ehem+xen@m5p.com>
To: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Cc: xen-devel@lists.xenproject.org, alex.bennee@linaro.org,
	bertrand.marquis@arm.com, andre.przywara@arm.com,
	Julien Grall <jgrall@amazon.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	George Dunlap <george.dunlap@citrix.com>,
	Ian Jackson <iwj@xenproject.org>, Jan Beulich <jbeulich@suse.com>,
	Wei Liu <wl@xen.org>, Roger Pau Monn?? <roger.pau@citrix.com>
Subject: Re: [PATCH] xen: acpi: Hide UART address only if SPCR exists
Date: Mon, 18 Jan 2021 23:25:17 -0800	[thread overview]
Message-ID: <YAaJXRTbMyDW4zP+@mattapan.m5p.com> (raw)
In-Reply-To: <160129689861.4486.15700361505030965554.stgit@localhost>

On Mon, Sep 28, 2020 at 09:41:39PM +0900, Masami Hiramatsu wrote:
> With Julien's ACPI fix, I found my DeveloperBox (
> https://www.96boards.org/product/developerbox/ ) still failed
> to boot bcause of SPCR issue. According to the UEFI EDK2
> implementation, the SCPR table will not be made if user
> chooses graphical console instead of serial.
> In such case, we should ignore the SPCR missing error.

You weren't the only person running into this.  Since you didn't get
back sooner I ended up submitting a pretty similar patch (I kept the
printk() due to informational value).

861f0c110976fa8879b7bf63d9478b6be83d4ab6 on master (switching to "main"
in the future?)

> Compared with Linux kernel implementation, this doesn't check
> the STAO (status override) table, becaue it seems STAO (or XENV)
> will be provided by Xen itself.
> Or, should we check STAO too?

Until we start seeing super-duper-visors Xen won't need to look for STAO.
Linux needs to look for STAO since it expects to potentially run under a
hypervisor, whereas Xen this isn't expected.

Graphics are a problem due to limits of ACPI table support.  Due to
graphics being a high priority for me, I'm temporarily using
device-trees.  :-(


-- 
(\___(\___(\______          --=> 8-) EHM <=--          ______/)___/)___/)
 \BS (    |         ehem+sigmsg@m5p.com  PGP 87145445         |    )   /
  \_CS\   |  _____  -O #include <stddisclaimer.h> O-   _____  |   /  _/
8A19\___\_|_/58D2 7E3D DDF4 7BA6 <-PGP-> 41D1 B375 37D0 8714\_|_/___/5445




  parent reply	other threads:[~2021-01-19  7:26 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-26 20:55 [PATCH 0/4] xen/arm: Unbreak ACPI Julien Grall
2020-09-26 20:55 ` [PATCH 1/4] xen/acpi: Rework acpi_os_map_memory() and acpi_os_unmap_memory() Julien Grall
2020-09-28  8:18   ` Jan Beulich
2020-09-28  9:58     ` Julien Grall
2020-09-28 10:09       ` Jan Beulich
2020-09-28 10:39         ` Julien Grall
2020-10-10  9:49           ` Julien Grall
2020-10-10 10:04             ` Julien Grall
2020-09-29 11:10   ` Rahul Singh
2020-10-01  0:06   ` Stefano Stabellini
2020-10-01 15:09     ` Julien Grall
2020-09-26 20:55 ` [PATCH 2/4] xen/arm: acpi: The fixmap area should always be cleared during failure/unmap Julien Grall
2020-09-29 11:13   ` Rahul Singh
2020-10-01  0:30   ` Stefano Stabellini
2020-10-01 15:14     ` Julien Grall
2020-09-26 20:55 ` [PATCH 3/4] xen/arm: Check if the platform is not using ACPI before initializing Dom0less Julien Grall
2020-09-29 11:17   ` Rahul Singh
2020-09-30 23:26   ` Stefano Stabellini
2020-09-26 20:55 ` [PATCH 4/4] xen/arm: Introduce fw_unreserved_regions() and use it Julien Grall
2020-09-30 23:40   ` Stefano Stabellini
2020-10-01 15:34     ` Julien Grall
2020-09-27  1:47 ` [PATCH 0/4] xen/arm: Unbreak ACPI Elliott Mitchell
2020-09-29 15:28   ` Elliott Mitchell
2020-09-28  6:47 ` Masami Hiramatsu
2020-09-28 12:41   ` [PATCH] xen: acpi: Hide UART address only if SPCR exists Masami Hiramatsu
2020-09-28 12:42     ` Masami Hiramatsu
2021-01-19  7:25     ` Elliott Mitchell [this message]
2021-01-20 18:05       ` Julien Grall
2020-09-28 13:00   ` [PATCH 0/4] xen/arm: Unbreak ACPI Masami Hiramatsu
2020-10-16 22:33     ` Xen-ARM EFI/ACPI problems (was: Re: [PATCH 0/4] xen/arm: Unbreak ACPI) Elliott Mitchell
2020-10-17  5:12       ` Elliott Mitchell
2020-10-08 18:39   ` [PATCH 0/4] xen/arm: Unbreak ACPI Elliott Mitchell
2020-10-09  9:39     ` Julien Grall
2020-10-09 14:22       ` Elliott Mitchell
2020-10-09 18:15         ` Julien Grall
2020-10-09 22:36           ` Elliott Mitchell
2020-10-09 21:49   ` Elliott Mitchell
2020-10-10 11:02   ` Julien Grall
2020-10-12 19:02     ` Stefano Stabellini
2020-10-12 21:34       ` Elliott Mitchell
2020-10-14  1:06         ` Stefano Stabellini
2020-10-14  1:37           ` Elliott Mitchell
2020-10-14 17:47             ` Julien Grall
2020-10-15 18:00               ` Stefano Stabellini
2020-10-14 17:44       ` Julien Grall
2020-09-29 11:10 ` Rahul Singh
2020-09-29 15:29 ` Alex Bennée
2020-09-29 17:07   ` Julien Grall
2020-09-29 21:11     ` Alex Bennée
2020-09-29 23:39       ` André Przywara
2020-09-30  8:51         ` Alex Bennée
2020-09-30 10:35         ` Julien Grall
2020-09-30  9:42       ` Julien Grall
2020-09-30 10:38         ` Alex Bennée
2020-09-30 11:10           ` Julien Grall

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