From: Julien Grall <julien@xen.org>
To: Elliott Mitchell <ehem+xen@m5p.com>
Cc: Masami Hiramatsu <masami.hiramatsu@linaro.org>,
xen-devel@lists.xenproject.org,
Alex Benn??e <alex.bennee@linaro.org>,
bertrand.marquis@arm.com, andre.przywara@arm.com,
Julien Grall <jgrall@amazon.com>,
Stefano Stabellini <sstabellini@kernel.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 0/4] xen/arm: Unbreak ACPI
Date: Fri, 9 Oct 2020 19:15:20 +0100 [thread overview]
Message-ID: <55a4ac3d-dc6f-f2f6-1a98-62d1c555d26e@xen.org> (raw)
In-Reply-To: <20201009142208.GA63582@mattapan.m5p.com>
Hi Elliott,
On 09/10/2020 15:22, Elliott Mitchell wrote:
> On Fri, Oct 09, 2020 at 10:39:26AM +0100, Julien Grall wrote:
>> On 08/10/2020 19:39, Elliott Mitchell wrote:
>>> Your (Masami Hiramatsu) patch seems plausible, but things haven't
>>> progressed enough for me to endorse it. Looks like something closer to
>>> the core of ACPI still needs further work, Julien Grall?
>>
>> I didn't go very far during my testing because QEMU is providing ACPI
>> 5.1 (Xen only supports 6.0+ so far).
>>
>> For your log above, Xen finished to boot and now dom0 should start
>> booting. The lack of console output may be because of a crash in Linux
>> during earlyboot.
>>
>> Do you have the early console enabled Linux? This can be done by adding
>> earlycon=xenboot on the Linux command line.
>
> Finding all the command-line console settings can be a challenge. I had
> thought it was supposed to be "console=hvc0 earlycon=hvc0".
>
> With that though I finally have some output which claims to come from the
> Linux kernel (yay! finally hit this point!). As we were both guessing,
> very early kernel panic:
>
> [ 0.000000] efi: Getting EFI parameters from FDT:
> [ 0.000000] efi: Can't find 'System Table' in device tree!
Thank you for sending part of the log. Looking at Linux 5.6 code, the
error message is printed by efi_get_fdt_params() (see
drivers/firmware/efi.c) when one of the property is missing.
'System Table' suggests that Linux wasn't enable to find
"linux,uefi-system-table" or "xen,uefi-system-table".
Xen will only create later. Would it be possible to add some code in
__find_uefi_params() to confirm which property Linux thinks is missing?
> [ 0.000000] cma: Failed to reserve 64 MiB
> [ 0.000000] Kernel panic - not syncing: Failed to allocate page table page
>
> I don't know whether this is a problem with the mini-DT which was passed
> in versus ACPI tables. I note a complete lack of ACPI table information.
I think this is normal because, IIRC, the ACPI root pointer will be
found using the System Table.
> The kernel is from a 5.6-based kernel tree. I'm unsure which portion to
> try updating next.
>
>
Cheers,
--
Julien Grall
next prev parent reply other threads:[~2020-10-09 18:16 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
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 [this message]
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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