Re: powerpc/kexec: Fix kexec/kdump in P9 guest kernels

2017-11-24 Thread Michael Ellerman
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 >

Re: [PATCH] powerpc/kexec: Fix kexec/kdump in P9 guest kernels

2017-11-23 Thread David Gibson
On Fri, Nov 24, 2017 at 02:51:02PM +1100, 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

Re: [PATCH] powerpc/kexec: Fix kexec/kdump in P9 guest kernels

2017-11-23 Thread Balbir Singh
On Fri, Nov 24, 2017 at 2:51 PM, 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 > not

[PATCH] powerpc/kexec: Fix kexec/kdump in P9 guest kernels

2017-11-23 Thread Michael Ellerman
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 sys