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From: Christoffer Dall <christoffer.dall@linaro.org>
To: "Richard W.M. Jones" <rjones@redhat.com>
Cc: kvmarm@lists.cs.columbia.edu
Subject: Re: kvm [2087]: load/store instruction decoding not implemented
Date: Tue, 24 Feb 2015 13:16:05 +0100	[thread overview]
Message-ID: <20150224121605.GA21364@cbox> (raw)
In-Reply-To: <20150224115935.GA26241@redhat.com>

Hi Rich,

On Tue, Feb 24, 2015 at 11:59:35AM +0000, Richard W.M. Jones wrote:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1194366
> 
> Has anyone seen this KVM error?  Or have suggestions how to debug it
> further?
> 
>   kvm [2028]: load/store instruction decoding not implemented

This typically means either (a) you're running an ancient 32-bit guest
or (b) your icache/dcache is poluted and you're executing the wrong
instructions.

> 
> Qemu prints this before crashing:
> 
>   error: kvm run failed Function not implemented
>   (followed by a register dump)
> 
> It happens precisely when the guest loads the crc32-arm64.ko module.
> 
> Both the guest and host kernel are 4.0.0-0.rc1.git0.1.fc23.aarch64
> 
Which hardware is this?  Which distro/rootfs?

Doing anything fancy like device passthrough etc.?  Can you share your
QEMU cmdline?

Thanks,
-Christoffer

  parent reply	other threads:[~2015-02-24 12:10 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-24 11:59 kvm [2087]: load/store instruction decoding not implemented Richard W.M. Jones
2015-02-24 12:15 ` Peter Maydell
2015-02-24 12:29   ` Richard W.M. Jones
2015-02-24 12:47     ` Christoffer Dall
2015-02-24 13:12       ` Marc Zyngier
2015-02-24 13:45         ` Richard W.M. Jones
2015-02-24 14:10           ` Marc Zyngier
2015-02-24 14:36             ` Richard W.M. Jones
2015-02-24 14:42               ` Marc Zyngier
2015-02-24 14:43                 ` Richard W.M. Jones
2015-02-24 15:03                   ` Marc Zyngier
2015-02-24 15:09                 ` Richard W.M. Jones
2015-02-24 15:20                   ` Marc Zyngier
2015-02-24 16:37                   ` Marc Zyngier
2015-02-24 14:25       ` Richard W.M. Jones
2015-02-24 14:55         ` Christoffer Dall
2015-02-24 15:06           ` Peter Maydell
2015-02-24 15:22           ` Richard W.M. Jones
2015-02-24 12:57     ` Peter Maydell
2015-02-24 12:16 ` Christoffer Dall [this message]
2015-02-24 12:27   ` Richard W.M. Jones

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