[PATCH 3/7] powerpc/watchpoint: Set CPU_FTR_DAWR1 based on pa-features bit

[Ravi Bangoria]

bit 0 of byte 64 in pa-features property indicates availability of 2nd
DAWR registers. i.e. If this bit is set, 2nd DAWR is present, otherwise
not. Host generally uses "cpu-features", which masks "pa-features". But
"cpu-features" are still not used for guests and thus this change is
mostly applicable for guests only.

Signed-off-by: Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx>
---
 arch/powerpc/kernel/prom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 1dcf0e214a22..6de59de579f7 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -175,6 +175,8 @@ static struct ibm_pa_feature {
 	 */
 	{ .pabyte = 22, .pabit = 0, .cpu_features = CPU_FTR_TM_COMP,
 	  .cpu_user_ftrs2 = PPC_FEATURE2_HTM_COMP | PPC_FEATURE2_HTM_NOSC_COMP },
+
+	{ .pabyte = 64, .pabit = 0, .cpu_features = CPU_FTR_DAWR1 },
 };
 
 static void __init scan_features(unsigned long node, const unsigned char *ftrs,
-- 
2.26.2