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author | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-17 07:28:43 +0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-17 07:28:43 +0400 |
commit | 2bf81c8af92dd53890557c5d87875842d573a3e9 (patch) | |
tree | 83e7e3539599b091ac69557658c06c0a39cfa60e /arch/sparc/kernel/setup_64.c | |
parent | 9526d9bc23f362035cfabf044aa90f4ed1787955 (diff) | |
parent | 5f6c4ab6ee781c9aace7c8548ad9bd87f5678df7 (diff) | |
download | linux-2bf81c8af92dd53890557c5d87875842d573a3e9.tar.xz |
Merge branch 'arch-microblaze' into no-rebases
Diffstat (limited to 'arch/sparc/kernel/setup_64.c')
-rw-r--r-- | arch/sparc/kernel/setup_64.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 0800e71d8a88..0eaf0059aaef 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -316,6 +316,25 @@ static void __init popc_patch(void) } } +static void __init pause_patch(void) +{ + struct pause_patch_entry *p; + + p = &__pause_3insn_patch; + while (p < &__pause_3insn_patch_end) { + unsigned long i, addr = p->addr; + + for (i = 0; i < 3; i++) { + *(unsigned int *) (addr + (i * 4)) = p->insns[i]; + wmb(); + __asm__ __volatile__("flush %0" + : : "r" (addr + (i * 4))); + } + + p++; + } +} + #ifdef CONFIG_SMP void __init boot_cpu_id_too_large(int cpu) { @@ -528,6 +547,8 @@ static void __init init_sparc64_elf_hwcap(void) if (sparc64_elf_hwcap & AV_SPARC_POPC) popc_patch(); + if (sparc64_elf_hwcap & AV_SPARC_PAUSE) + pause_patch(); } void __init setup_arch(char **cmdline_p) |