[PATCH v5 6/8] powerpc/watchpoint: Add hw_len wherever missing

[Ravi Bangoria]

There are couple of places where we set len but not hw_len. For
ptrace/perf watchpoints, when CONFIG_HAVE_HW_BREAKPOINT=Y, hw_len
will be calculated and set internally while parsing watchpoint.
But when CONFIG_HAVE_HW_BREAKPOINT=N, we need to manually set
'hw_len'. Similarly for xmon as well, hw_len needs to be set
directly.

Fixes: b57aeab811db ("powerpc/watchpoint: Fix length calculation for unaligned 
target")
Signed-off-by: Ravi Bangoria <ravi.bango...@linux.ibm.com>
---
 arch/powerpc/kernel/ptrace/ptrace-noadv.c | 1 +
 arch/powerpc/xmon/xmon.c                  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/powerpc/kernel/ptrace/ptrace-noadv.c 
b/arch/powerpc/kernel/ptrace/ptrace-noadv.c
index 866597b407bc..081c39842d84 100644
--- a/arch/powerpc/kernel/ptrace/ptrace-noadv.c
+++ b/arch/powerpc/kernel/ptrace/ptrace-noadv.c
@@ -219,6 +219,7 @@ long ppc_set_hwdebug(struct task_struct *child, struct 
ppc_hw_breakpoint *bp_inf
        brk.address = ALIGN_DOWN(bp_info->addr, HW_BREAKPOINT_SIZE);
        brk.type = HW_BRK_TYPE_TRANSLATE | HW_BRK_TYPE_PRIV_ALL;
        brk.len = DABR_MAX_LEN;
+       brk.hw_len = DABR_MAX_LEN;
        if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
                brk.type |= HW_BRK_TYPE_READ;
        if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index df7bca00f5ec..55c43a6c9111 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -969,6 +969,7 @@ static void insert_cpu_bpts(void)
                        brk.address = dabr[i].address;
                        brk.type = (dabr[i].enabled & HW_BRK_TYPE_DABR) | 
HW_BRK_TYPE_PRIV_ALL;
                        brk.len = 8;
+                       brk.hw_len = 8;
                        __set_breakpoint(i, &brk);
                }
        }
-- 
2.26.2