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From: Michael Ellerman <mpe@ellerman.id.au>
To: Roman Bolshakov <r.bolshakov@yadro.com>, Benjamin Herrenschmidt
 <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>,
 linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] Revert "powerpc: Switch to relative jump labels"
In-Reply-To: <20210528012943.23192-1-r.bolshakov@yadro.com>
References: <20210528012943.23192-1-r.bolshakov@yadro.com>
Date: Sat, 29 May 2021 09:39:49 +1000
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Cc: Roman Bolshakov <r.bolshakov@yadro.com>,
 Anastasia Kovaleva <a.kovaleva@yadro.com>, linux@yadro.com
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Roman Bolshakov <r.bolshakov@yadro.com> writes:
> This reverts commit b0b3b2c78ec075cec4721986a95abbbac8c3da4f.
>
> Otherwise, direct kernel boot with initramfs no longer works in QEMU.
> It's broken in some bizarre way because a valid initramfs is not
> recognized anymore:
>
>   Found initrd at 0xc000000001f70000:0xc000000003d61d64
>   rootfs image is not initramfs (XZ-compressed data is corrupt); looks like an initrd
>
> The issue is observed on v5.13-rc3 if the kernel is built with
> defconfig, GCC 7.5.0 and GNU ld 2.32.0.

Are you able to try a different compiler?

I test booting qemu constantly, but I don't use GCC 7.5.

I assume your initramfs is compressed with XZ? How large is it
compressed?

And what qemu version are you using?

cheers