diff options
Diffstat (limited to 'arch/sparc/kernel/mdesc.c')
| -rw-r--r-- | arch/sparc/kernel/mdesc.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c index 6dc79628058..831c001604e 100644 --- a/arch/sparc/kernel/mdesc.c +++ b/arch/sparc/kernel/mdesc.c @@ -817,6 +817,30 @@ void __cpuinit mdesc_populate_present_mask(cpumask_t *mask) mdesc_iterate_over_cpus(record_one_cpu, NULL, mask); } +static void * __init check_one_pgsz(struct mdesc_handle *hp, u64 mp, int cpuid, void *arg) +{ + const u64 *pgsz_prop = mdesc_get_property(hp, mp, "mmu-page-size-list", NULL); + unsigned long *pgsz_mask = arg; + u64 val; + + val = (HV_PGSZ_MASK_8K | HV_PGSZ_MASK_64K | + HV_PGSZ_MASK_512K | HV_PGSZ_MASK_4MB); + if (pgsz_prop) + val = *pgsz_prop; + + if (!*pgsz_mask) + *pgsz_mask = val; + else + *pgsz_mask &= val; + return NULL; +} + +void __init mdesc_get_page_sizes(cpumask_t *mask, unsigned long *pgsz_mask) +{ + *pgsz_mask = 0; + mdesc_iterate_over_cpus(check_one_pgsz, pgsz_mask, mask); +} + static void * __cpuinit fill_in_one_cpu(struct mdesc_handle *hp, u64 mp, int cpuid, void *arg) { const u64 *cfreq = mdesc_get_property(hp, mp, "clock-frequency", NULL); |