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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-05-22 15:53:00 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-06-06 20:49:06 +1000 |
| commit | 38b0c8454b56a74fe785f0db1d218afa8f6ea478 (patch) | |
| tree | 2371fcb67e716a7cd16016031cd3554d1afddede /asm | |
| parent | 41b14f9452c25f3dd74a8304763a3cc58bff019f (diff) | |
| download | skiboot-38b0c8454b56a74fe785f0db1d218afa8f6ea478.zip skiboot-38b0c8454b56a74fe785f0db1d218afa8f6ea478.tar.gz skiboot-38b0c8454b56a74fe785f0db1d218afa8f6ea478.tar.bz2 | |
cpu: Introduce smt_lowest()
Recent CPUs have introduced a lower SMT priority. This uses the
Linux pattern of executing priority nops in descending order to
get a simple portable way to put the CPU into lowest SMT priority.
Introduce smt_lowest() and use it in place of smt_very_low and
smt_low ; smt_very_low sequences.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'asm')
| -rw-r--r-- | asm/head.S | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -398,7 +398,7 @@ secondary_wait: */ LOAD_IMM32(%r3, boot_flag - __head) add %r3,%r3,%r30 -1: smt_very_low +1: smt_lowest lwz %r0,0(%r3) cmpdi %r0,0 beq 1b @@ -416,7 +416,7 @@ secondary_wait: 1: /* Now wait for cpu_secondary_start to be set */ LOAD_ADDR_FROM_TOC(%r3, cpu_secondary_start) -1: smt_very_low +1: smt_lowest ld %r0,0(%r3) cmpdi %r0,0 beq 1b @@ -441,7 +441,7 @@ secondary_wait: /* Not found... what to do ? set some global error ? */ secondary_not_found: - smt_very_low + smt_lowest b . call_relocate: |