Make BHRB instructions available in problem and privileged states.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
#define HFSCR_TAR (1 << (63-55)) /* Enable Target Address Register */
#define HFSCR_TM (1 << (63-58)) /* Enable Transactional Memory */
#define HFSCR_PM (1 << (63-60)) /* Enable prob/priv access to PMU SPRs */
+#define HFSCR_BHRB (1 << (63-59)) /* Enable Branch History Rolling Buffer*/
#define HFSCR_DSCR (1 << (63-61)) /* Enable Data Stream Control Register */
#define HFSCR_VECVSX (1 << (63-62)) /* Enable VMX/VSX */
#define HFSCR_FP (1 << (63-63)) /* Enable Floating Point */
__init_HFSCR:
mfspr r3,SPRN_HFSCR
- ori r3,r3,HFSCR_TAR|HFSCR_TM|HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP|HFSCR_PM
+ ori r3,r3,HFSCR_TAR|HFSCR_TM|HFSCR_BHRB|HFSCR_PM|\
+ HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP
mtspr SPRN_HFSCR,r3
blr