diff options
Diffstat (limited to 'arch/arm/xen')
| -rw-r--r-- | arch/arm/xen/enlighten.c | 1 | ||||
| -rw-r--r-- | arch/arm/xen/mm.c | 15 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 224081ccc92f..7d0f07020c80 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -272,6 +272,7 @@ void xen_arch_pre_suspend(void) { } void xen_arch_post_suspend(int suspend_cancelled) { } void xen_timer_resume(void) { } void xen_arch_resume(void) { } +void xen_arch_suspend(void) { } /* In the hypervisor.S file. */ diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 793551d15f1d..498325074a06 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -4,6 +4,7 @@ #include <linux/gfp.h> #include <linux/highmem.h> #include <linux/export.h> +#include <linux/memblock.h> #include <linux/of_address.h> #include <linux/slab.h> #include <linux/types.h> @@ -21,6 +22,20 @@ #include <asm/xen/hypercall.h> #include <asm/xen/interface.h> +unsigned long xen_get_swiotlb_free_pages(unsigned int order) +{ + struct memblock_region *reg; + gfp_t flags = __GFP_NOWARN; + + for_each_memblock(memory, reg) { + if (reg->base < (phys_addr_t)0xffffffff) { + flags |= __GFP_DMA; + break; + } + } + return __get_free_pages(flags, order); +} + enum dma_cache_op { DMA_UNMAP, DMA_MAP, |