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It should be pghot.o > > Can you please provide base commit. Unable to apply patch cleanly using b4 utility. Right, sorry about this. The base commit is 8742b2d8935f476449ef37e263bc4da3295c7b58 The updated patchset is available from https://github.com/AMDESE/linux-mm/tree/bharata/kpromoted-rfcv1 Regards, Bharata.