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From: Stefano Stabellini <sstabellini@kernel.org>
To: Julien Grall <julien@xen.org>
Cc: xen-devel@lists.xenproject.org, alex.bennee@linaro.org,
	 masami.hiramatsu@linaro.org, ehem+xen@m5p.com,
	bertrand.marquis@arm.com,  andre.przywara@arm.com,
	Julien Grall <jgrall@amazon.com>,
	 Stefano Stabellini <sstabellini@kernel.org>,
	 Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [PATCH 3/4] xen/arm: Check if the platform is not using ACPI before initializing Dom0less
Date: Wed, 30 Sep 2020 16:26:59 -0700 (PDT)	[thread overview]
Message-ID: <alpine.DEB.2.21.2009301626300.10908@sstabellini-ThinkPad-T480s> (raw)
In-Reply-To: <20200926205542.9261-4-julien@xen.org>

On Sat, 26 Sep 2020, Julien Grall wrote:
> From: Julien Grall <jgrall@amazon.com>
> 
> Dom0less requires a device-tree. However, since commit 6e3e77120378
> "xen/arm: setup: Relocate the Device-Tree later on in the boot", the
> device-tree will not get unflatten when using ACPI.
> 
> This will lead to a crash during boot.
> 
> Given the complexity to setup dom0less with ACPI (for instance how to
> assign device?), we should skip any code related to Dom0less when using
> ACPI.

Yeah...

Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>


> Signed-off-by: Julien Grall <jgrall@amazon.com>
> ---
>  xen/arch/arm/setup.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
> index f16b33fa87a2..35e5bee04efa 100644
> --- a/xen/arch/arm/setup.c
> +++ b/xen/arch/arm/setup.c
> @@ -987,7 +987,8 @@ void __init start_xen(unsigned long boot_phys_offset,
>  
>      system_state = SYS_STATE_active;
>  
> -    create_domUs();
> +    if ( acpi_disabled )
> +        create_domUs();
>  
>      domain_unpause_by_systemcontroller(dom0);
>  
> -- 
> 2.17.1
> 


  parent reply	other threads:[~2020-09-30 23:27 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 [this message]
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
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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