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.bango...@linux.ibm.com>
---
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
