linux-kernel - Re: [PATCH] sh: Avoid using IRQ0 on SH3 and SH4

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Date:   Thu, 06 Jul 2023 19:41:48 +0200
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     Guenter Roeck <linux@...ck-us.net>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Sergey Shtylyov <s.shtylyov@....ru>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, linux-sh@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sh: Avoid using IRQ0 on SH3 and SH4

Hi Guenter!

On Thu, 2023-07-06 at 10:04 -0700, Guenter Roeck wrote:
> I tried rts7751r2dplus_defconfig with no modifications and the following minimized
> qemu command line.
> 
> qemu-system-sh4 -M r2d -kernel arch/sh/boot/zImage -serial null -serial stdio -nographic -monitor null
> 
> This hangs after "heartbeat: version 0.1.2 loaded", so it doesn't
> even get to the point where it would try to load a root file system.
> After reverting this patch, I get
> ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---
> as expected.
> 
> I tried with qemu version 6.2, 7.1, 7.2, and 8.0.

I'm curios to hear what Geert and Sergey have to say. I hope we don't have to revert this :-(.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
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