From: Kumar Gala Date: Thu, 6 Oct 2011 02:53:40 +0000 (+0000) Subject: powerpc/book3e-64: Fix debug support for userspace X-Git-Tag: v3.2-rc3~41^2~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=187b9f2aa769198daa7cf8054abb65a08b8d8b47;p=pandora-kernel.git powerpc/book3e-64: Fix debug support for userspace With the introduction of CONFIG_PPC_ADV_DEBUG_REGS user space debug is broken on Book-E 64-bit parts that support delayed debug events. When switch_booke_debug_regs() sets DBCR0 we'll start getting debug events as MSR_DE is also set and we aren't able to handle debug events from kernel space. We can remove the hack that always enables MSR_DE and loads up DBCR0 and just utilize switch_booke_debug_regs() to get user space debug working again. We still need to handle critical/debug exception stacks & proper save/restore of state for those exception levles to support debug events from kernel space like we have on 32-bit. Signed-off-by: Kumar Gala Signed-off-by: Benjamin Herrenschmidt --- Reading git-diff-tree failed