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-rw-r--r--Documentation/powerpc/ptrace.txt1
-rw-r--r--arch/powerpc/include/uapi/asm/ptrace.h1
-rw-r--r--arch/powerpc/kernel/ptrace.c2
3 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/powerpc/ptrace.txt b/Documentation/powerpc/ptrace.txt
index f2a7a3919772..99c5ce88d0fe 100644
--- a/Documentation/powerpc/ptrace.txt
+++ b/Documentation/powerpc/ptrace.txt
@@ -40,6 +40,7 @@ features will have bits indicating whether there is support for:
#define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x2
#define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x4
#define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x8
+#define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x10
2. PTRACE_SETHWDEBUG
diff --git a/arch/powerpc/include/uapi/asm/ptrace.h b/arch/powerpc/include/uapi/asm/ptrace.h
index 66b9ca4ee94a..77d2ed35b111 100644
--- a/arch/powerpc/include/uapi/asm/ptrace.h
+++ b/arch/powerpc/include/uapi/asm/ptrace.h
@@ -211,6 +211,7 @@ struct ppc_debug_info {
#define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x0000000000000002
#define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x0000000000000004
#define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x0000000000000008
+#define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x0000000000000010
#ifndef __ASSEMBLY__
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 10ade3c0c88a..3b14d320e69f 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1644,6 +1644,8 @@ long arch_ptrace(struct task_struct *child, long request,
dbginfo.sizeof_condition = 0;
#ifdef CONFIG_HAVE_HW_BREAKPOINT
dbginfo.features = PPC_DEBUG_FEATURE_DATA_BP_RANGE;
+ if (cpu_has_feature(CPU_FTR_DAWR))
+ dbginfo.features |= PPC_DEBUG_FEATURE_DATA_BP_DAWR;
#else
dbginfo.features = 0;
#endif /* CONFIG_HAVE_HW_BREAKPOINT */

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