[v3, 1/8] powerpc/perf/hv-24x7: Fix passing of catalog version number

Thiago Jung Bauermann bauerman at linux.vnet.ibm.com
Mon Jul 3 23:23:13 AEST 2017

Michael Ellerman <patch-notifications at ellerman.id.au> writes:

> On Thu, 2017-06-29 at 21:55:31 UTC, Thiago Jung Bauermann wrote:
>> H_GET_24X7_CATALOG_PAGE needs to be passed the version number obtained from
>> the first catalog page obtained previously. This is a 64 bit number, but
>> create_events_from_catalog truncates it to 32-bit.
>> This worked on POWER8, but POWER9 actually uses the upper bits so the call
>> fails with H_P3 because the hypervisor doesn't recognize the version.
>> This patch also adds the hcall return code to the error message, which is
>> helpful when debugging the problem.
>> Fixes: 5c5cd7b50259 ("powerpc/perf/hv-24x7: parse catalog and populate sysfs with events")
>> Reviewed-by: Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com>
>> Signed-off-by: Thiago Jung Bauermann <bauerman at linux.vnet.ibm.com>
> Series applied to powerpc next, thanks.
> https://git.kernel.org/powerpc/c/12bf85a71000af7419b19b5e909109


Thiago Jung Bauermann
IBM Linux Technology Center

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