From: Ulrich Weigand Date: Thu, 12 Dec 2013 04:59:34 +0000 (+1100) Subject: powerpc: PTRACE_PEEKUSR always returns FPR0 X-Git-Tag: v3.13-rc5~37^2~9 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36aa1b180e7398e2bd27642760bfaa4ad8c65ab6;p=pandora-kernel.git powerpc: PTRACE_PEEKUSR always returns FPR0 There is a bug in using ptrace to access FPRs via PTRACE_PEEKUSR / PTRACE_POKEUSR. In effect, trying to access any of the FPRs always really accesses FPR0, which does seriously break debugging :-) The problem seems to have been introduced by commit 3ad26e5c4459d (Merge branch 'for-kvm' into next). [ It is indeed a merge conflict between Paul's FPU/VSX state rework and my LE patches - Anton ] Signed-off-by: Ulrich Weigand Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- Reading git-diff-tree failed