@@ -769,6 +769,8 @@ finish_tlb_load_47x:
*/
DEBUG_CRIT_EXCEPTION
+interrupt_end:
+
/*
* Global functions
*/
@@ -286,13 +286,13 @@ label:
andis. r10,r10,(DBSR_IC|DBSR_BT)@h; \
beq+ 2f; \
\
- lis r10,KERNELBASE@h; /* check if exception in vectors */ \
- ori r10,r10,KERNELBASE@l; \
+ lis r10,interrupt_base@h; /* check if exception in vectors */ \
+ ori r10,r10,interrupt_base@l; \
cmplw r12,r10; \
blt+ 2f; /* addr below exception vectors */ \
\
- lis r10,DebugDebug@h; \
- ori r10,r10,DebugDebug@l; \
+ lis r10,interrupt_end@h; \
+ ori r10,r10,interrupt_end@l; \
cmplw r12,r10; \
bgt+ 2f; /* addr above exception vectors */ \
\
@@ -339,13 +339,13 @@ label:
andis. r10,r10,(DBSR_IC|DBSR_BT)@h; \
beq+ 2f; \
\
- lis r10,KERNELBASE@h; /* check if exception in vectors */ \
- ori r10,r10,KERNELBASE@l; \
+ lis r10,interrupt_base@h; /* check if exception in vectors */ \
+ ori r10,r10,interrupt_base@l; \
cmplw r12,r10; \
blt+ 2f; /* addr below exception vectors */ \
\
- lis r10,DebugCrit@h; \
- ori r10,r10,DebugCrit@l; \
+ lis r10,interrupt_end@h; \
+ ori r10,r10,interrupt_end@l; \
cmplw r12,r10; \
bgt+ 2f; /* addr above exception vectors */ \
\
@@ -605,6 +605,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
/* Embedded Hypervisor Privilege */
EXCEPTION(0, HV_PRIV, Ehvpriv, unknown_exception, EXC_XFER_EE)
+interrupt_end:
+
/*
* Local functions
*/
We do not want to take single step and branch-taken debug exception in kernel exception code. But the address range check was not covering all kernel exception handlers address range. With this patch we defined the interrupt_end label which defines the end on kernel exception code. So now we check interrupt_base to interrupt_end range for not handling debug exception in kernel exception entry. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> --- arch/powerpc/kernel/head_44x.S | 2 ++ arch/powerpc/kernel/head_booke.h | 16 ++++++++-------- arch/powerpc/kernel/head_fsl_booke.S | 2 ++ 3 files changed, 12 insertions(+), 8 deletions(-)