diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/sparc/kernel/smp_64.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index 9b4506373353..80f20b3808ee 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1621,6 +1621,7 @@ static int __init pcpu_cpu_distance(unsigned int from, unsigned int to) static void __init pcpu_populate_pte(unsigned long addr) { pgd_t *pgd = pgd_offset_k(addr); + p4d_t *p4d; pud_t *pud; pmd_t *pmd; @@ -1633,7 +1634,17 @@ static void __init pcpu_populate_pte(unsigned long addr) pgd_populate(&init_mm, pgd, new); } - pud = pud_offset(pgd, addr); + p4d = p4d_offset(pgd, addr); + if (p4d_none(*p4d)) { + pud_t *new; + + new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); + if (!new) + goto err_alloc; + p4d_populate(&init_mm, p4d, new); + } + + pud = pud_offset(p4d, addr); if (pud_none(*pud)) { pmd_t *new; |