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authorMichael Ellerman <mpe@ellerman.id.au>2017-10-10 20:52:45 +1100
committerStewart Smith <stewart@linux.vnet.ibm.com>2017-10-10 15:37:20 -0500
commit48b8b46444f3f6b600012fdaa2fcdf9a52b3a6af (patch)
treee79f99f09562638f4a97415127a91ba53bd9020c /hdata
parent7b51ce6fab530fa5d6b2d638dcaf5e3311bfc1a6 (diff)
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hdat: Disable TM on Power9 DD 2.1
Update pa_features_p9[] to disable TM (Transactional Memory). On DD 2.1 TM is not usable by Linux without other workarounds, so skiboot must disable it. The presence of TM is communicated by setting bit 7 of byte 22 in the pa-features array. As no other bits are set in that byte, we currently have a value of 0x80. To disable TM we set bit 7 to 0, leaving a value of 0x0. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hdata')
-rw-r--r--hdata/cpu-common.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hdata/cpu-common.c b/hdata/cpu-common.c
index 01228f3..eb86f95 100644
--- a/hdata/cpu-common.c
+++ b/hdata/cpu-common.c
@@ -68,7 +68,7 @@ struct dt_node * add_core_common(struct dt_node *cpus,
64, 0,
0xf6, 0x3f, 0xc7, 0xc0, 0x80, 0xd0, 0x80, 0x00, /* 0 .. 7 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8 .. 15 */
- 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 16 .. 23 */
+ 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 16 .. 23 */
0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 24 .. 31 */
0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, /* 32 .. 39 */
0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 40 .. 47 */