[v3 PATCH 2/5] powerpc/pseries: Fix endainness while restoring of r3 in MCE handler.

[Michael Ellerman]

Mahesh J Salgaonkar <mahesh at linux.vnet.ibm.com> writes:
> From: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com>
>
> During Machine Check interrupt on pseries platform, register r3 points
> RTAS extended event log passed by hypervisor. Since hypervisor uses r3
> to pass pointer to rtas log, it stores the original r3 value at the
> start of the memory (first 8 bytes) pointed by r3. Since hypervisor
> stores this info and rtas log is in BE format, linux should make
> sure to restore r3 value in correct endian format.

Can we hit this under KVM? And if so what if the KVM/qemu is running
little endian, does it still write the value BE?

cheers