On Fri, Oct 07, 2016 at 08:44:48AM +1100, Michael Ellerman wrote:

wei.guo.simon@gmail.com writes:

quoted

From: Anshuman Khandual <redacted>

This patch adds ptrace interface test for EBB/PMU specific
registers. This also adds some generic ptrace interface
based helper functions to be used by other patches later
on in the series.

This is consistently failing for me on a P8 Tuleta (pvr 004b 0201):

# ./ptrace-ebb 
test: ptrace_ebb_pmu
tags: git_version:v4.8-rc5-176-g89cf1de0ae90
EBBRR: 100059f8
EBBHR: 100053cc; expected: 100053cc
BESCR: 8000000100000000
SIAR:  100012d0
SDAR:  3fff7e4cc000
SIER:  3000000; expected: 2000000
MMCR2: 0; expected: 0
MMCR0: 180000080; expected: 180000080
failure: ptrace_ebb_pmu

cheers

Michael,

Yes.. SIER has different value in baremetal and virtual machine
due to different MSR[HV] value.  I will correct it. Originally I only
tested in virtual BE/LE machines.

Currently all tests cases (with fix) passed on one baremetal P8 machine 
with LE OS installed.  And I will try to find another baremetal with BE 
OS installed to test.

Thanks for indicating it.

BR,
Simon