Aarch32 user space PC alignment exception
Mark Salyzyn
salyzyn at android.com
Tue Oct 13 14:30:51 PDT 2015
armv7 does not have a PC alignment exception. armv8 Aarch32
user space however can produce a PC alignment exception. Add
handler so the we do not dump an unexpected stack trace in
the logs.
Signed-off-by: Mark Salyzyn <salyzyn at android.com>
---
arch/arm64/kernel/entry.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 4306c93..7ed3d75 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -430,6 +430,8 @@ el0_sync_compat:
b.eq el0_fpsimd_acc
cmp x24, #ESR_ELx_EC_FP_EXC32 // FP/ASIMD exception
b.eq el0_fpsimd_exc
+ cmp x24, #ESR_ELx_EC_PC_ALIGN // pc alignment exception
+ b.eq el0_sp_pc
cmp x24, #ESR_ELx_EC_UNKNOWN // unknown exception in EL0
b.eq el0_undef
cmp x24, #ESR_ELx_EC_CP15_32 // CP15 MRC/MCR trap
--
2.6.0.rc2.230.g3dd15c0
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