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authorKumar Gala <galak@kernel.crashing.org>2011-10-06 02:53:40 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-11-17 16:26:07 +1100
commit187b9f2aa769198daa7cf8054abb65a08b8d8b47 (patch)
tree722bbeb3aa73e59b1b6b3fb883c287adb7583a53 /arch/powerpc/include/asm
parentb95bc2191412f5ecf2781c966110a13fa82a80d3 (diff)
downloadlinaro-lsk-187b9f2aa769198daa7cf8054abb65a08b8d8b47.tar.gz
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 <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm')
-rw-r--r--arch/powerpc/include/asm/reg_booke.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h
index 28cdbd9f399..03c48e819c8 100644
--- a/arch/powerpc/include/asm/reg_booke.h
+++ b/arch/powerpc/include/asm/reg_booke.h
@@ -31,7 +31,7 @@
#define MSR_ MSR_ME | MSR_CE
#define MSR_KERNEL MSR_ | MSR_64BIT
-#define MSR_USER32 MSR_ | MSR_PR | MSR_EE | MSR_DE
+#define MSR_USER32 MSR_ | MSR_PR | MSR_EE
#define MSR_USER64 MSR_USER32 | MSR_64BIT
#elif defined (CONFIG_40x)
#define MSR_KERNEL (MSR_ME|MSR_RI|MSR_IR|MSR_DR|MSR_CE)