On Fri, 2017-11-24 at 03:51:02 UTC, Michael Ellerman wrote:
> The code that cleans up the IAMR/AMOR before kexec'ing failed to
> remember that when we're running as a guest AMOR is not writable, it's
> hypervisor privileged.
>
> They symptom is that the kexec stops before entering purgatory and
> nothing else is seen on the console. If you examine the state of the
> system all threads will be in the 0x700 program check handler.
>
> Fix it by making the write to AMOR dependent on HV mode.
>
> Fixes: 1e2a516e89fc ("powerpc/kexec: Fix radix to hash kexec due to
> IAMR/AMOR")
> Cc: [email protected] # v4.10+
> Reported-by: Yilin Zhang <[email protected]>
> Debugged-by: David Gibson <[email protected]>
> Signed-off-by: Michael Ellerman <[email protected]>
> Acked-by: Balbir Singh <[email protected]>
> Reviewed-by: David Gibson <[email protected]>
> Tested-by: David Gibson <[email protected]>
Applied to powerpc fixes.
https://git.kernel.org/powerpc/c/2621e945fbf1d6df5f3f0ba7be5bae
cheers
