diff options
Diffstat (limited to 'arch/powerpc/sysdev/xive/common.c')
| -rw-r--r-- | arch/powerpc/sysdev/xive/common.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index 558df6542b1a..a30d6d12b92b 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -1428,6 +1428,22 @@ bool __init xive_core_init(const struct xive_ops *ops, void __iomem *area, u32 o return true; } +__be32 *xive_queue_page_alloc(unsigned int cpu, u32 queue_shift) +{ + unsigned int alloc_order; + struct page *pages; + __be32 *qpage; + + alloc_order = xive_alloc_order(queue_shift); + pages = alloc_pages_node(cpu_to_node(cpu), GFP_KERNEL, alloc_order); + if (!pages) + return ERR_PTR(-ENOMEM); + qpage = (__be32 *)page_address(pages); + memset(qpage, 0, 1 << queue_shift); + + return qpage; +} + static int __init xive_off(char *arg) { xive_cmdline_disabled = true; |