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From: Marc Zyngier <marc.zyngier@arm.com>
To: Vicente Bergas <vicencb@gmail.com>, linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Heiko Stuebner <heiko@sntech.de>,
	linux-rockchip@lists.infradead.org
Subject: Re: kexec on rk3399
Date: Mon, 22 Jul 2019 15:54:41 +0100	[thread overview]
Message-ID: <91c53121-9041-e8a2-97a2-5b5626e24c6e@arm.com> (raw)
In-Reply-To: <ebcb52be-2063-4e2c-9a09-fdcacb94f855@gmail.com>

On 22/07/2019 15:31, Vicente Bergas wrote:
> Hi, i have been running linux on rk3399 booted with kexec fine until 5.2
> From 5.2 onwards, there are memory corruption issues as reported here:
> http://lkml.iu.edu/hypermail/linux/kernel/1906.2/07211.html
> kexec has been identified as the principal reason for the issues.
> 
> It turns out that kexec has never worked reliably on this platform,
> i was just lucky until recently.
> 
> Please, can you provide some directions on how to debug the issue?
> 
> The latest test performed is:
>  1.- Boot v5.3-rc1

Not the most trusted version, but hey, why not...

>  2.- Kexec into v5.2.2
>  3.- The kernel reports nothing (earlycon not enabled) and does not boot.
> The same kernel v5.2.2 works fine when booted without kexec.

Can you please enable earlycon and let us know how far it goes? Your
previous reports hinting at runtime memory corruption, but this seems to
be much more radical...

FWIW, I was able to kexec using 5.2-rcx (for values of x around 6) on a
NanoPC-T4, using a mainline u-boot and firmware.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

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  parent reply	other threads:[~2019-07-22 14:55 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-22 14:31 kexec on rk3399 Vicente Bergas
2019-07-22 14:46 ` Will Deacon
2019-07-22 16:08   ` Vicente Bergas
2019-07-22 14:47 ` Matthias Brugger
2019-07-22 16:56   ` Vicente Bergas
2019-07-22 14:54 ` Marc Zyngier [this message]
2019-07-22 17:05   ` Vicente Bergas
2019-07-22 17:35     ` Robin Murphy
2019-07-22 18:53       ` Vicente Bergas
2019-07-23 13:32         ` Robin Murphy
2019-08-14 12:53 ` Vicente Bergas
2019-08-14 13:06   ` Felipe Balbi
2019-08-14 13:15     ` Vicente Bergas
2019-08-15  6:00       ` Felipe Balbi
2019-08-14 13:12   ` Robin Murphy
2019-08-15  1:15     ` Vicente Bergas
2019-08-15  6:06       ` Felipe Balbi
2019-08-15 11:09         ` Robin Murphy
2019-08-17 17:41           ` [PATCH] usb: dwc3: Add shutdown to platform_driver Vicente Bergas
2019-08-27 11:45             ` Vicente Bergas
2019-08-27 11:53               ` Felipe Balbi
2019-08-27 12:16                 ` Vicente Bergas
2019-09-09 15:07                   ` Vicente Bergas
2019-10-23  6:31                     ` Felipe Balbi
2019-10-24 12:15                       ` Vicente Bergas
2019-10-25 10:25                         ` Felipe Balbi
2019-10-25 10:42                           ` Vicente Bergas
2019-09-19 11:36             ` Vicente Bergas

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