linux-kernel - Re: [PATCH] ARM: rockchip: fix kernel hang during smp initialization

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Message-ID: <175250559795.2450518.6205508340787184365.b4-ty@sntech.de>
Date: Mon, 14 Jul 2025 17:08:55 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Russell King <linux@...linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Alexander Kochetkov <al.kochet@...il.com>
Cc: Heiko Stuebner <heiko@...ech.de>
Subject: Re: [PATCH] ARM: rockchip: fix kernel hang during smp initialization


On Thu, 03 Jul 2025 17:04:53 +0300, Alexander Kochetkov wrote:
> In order to bring up secondary CPUs main CPU write trampoline
> code to SRAM. The trampoline code is written while secondary
> CPUs are powered on (at least that true for RK3188 CPU).
> Sometimes that leads to kernel hang. Probably because secondary
> CPU execute trampoline code while kernel doesn't expect.
> 
> The patch moves SRAM initialization step to the point where all
> secondary CPUs are powered down.
> 
> [...]

Applied, thanks!

Gave this a spin on rk3066 + rk3188 + (not-A9) rk3288.
Both the affected SoCs as well as the rk3288 booted fine.


[1/1] ARM: rockchip: fix kernel hang during smp initialization
      commit: 7cdb433bb44cdc87dc5260cdf15bf03cc1cd1814

Best regards,
-- 
Heiko Stuebner <heiko@...ech.de>