[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v5 10/10] vring: Add a module parameter to force-enable the DMA API
This will be useful for testing. Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx> --- drivers/virtio/virtio_ring.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 305c05cc249a..46fb77d824e9 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -45,6 +45,10 @@ * API. */ +static bool force_dma_api = false; +module_param(force_dma_api, bool, 0644); +MODULE_PARM_DESC(force_dma_api, "force-enable the DMA API"); + static bool vring_use_dma_api(void) { #if defined(CONFIG_X86) && defined(CONFIG_XEN) @@ -59,7 +63,7 @@ static bool vring_use_dma_api(void) return static_cpu_has(X86_FEATURE_XENPV); #endif - return false; + return force_dma_api; } #ifdef DEBUG -- 2.5.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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