| Message ID | 20200604033443.70591-5-ravi.bangoria@linux.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | powerpc/watchpoint: Enable 2nd DAWR on baremetal and powervm | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | warning | Failed to apply on branch powerpc/merge (4d8244d005b2a92c872a0a993c3aa94b5842e56b) |
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/next (4336b9337824a60a0b10013c622caeee99460db5) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 8 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 6a3bac357e24..34272cef8ae6 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,
As per the PAPR, 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@linux.ibm.com> --- arch/powerpc/kernel/prom.c | 2 ++ 1 file changed, 2 insertions(+)