On Wed, 24 Jun 2020 13:05:39 +0200 Alexander Gordeev <agordeev@xxxxxxxxxxxxx> wrote: > On Wed, Jun 24, 2020 at 08:43:10AM +0530, Anshuman Khandual wrote: > > [...] > > > Hello Gerald/Christophe/Vineet, > > > > It would be really great if you could give this series a quick test > > on s390/ppc/arc platforms respectively. Thank you. > > That worked for me with the default and debug s390 configurations. > Would you like to try with some particular options or combinations > of the options? It will be enabled automatically on all archs that set ARCH_HAS_DEBUG_VM_PGTABLE, which we do for s390 unconditionally. Also, DEBUG_VM has to be set, which we have only in the debug config. So only the s390 debug config will have it enabled, you can check dmesg for "debug_vm_pgtable" to see when / where it was run, and if it triggered any warnings. I also checked with the v3 series, and it works fine for s390.