Re: [Xen-devel] [PATCH v4 2/3] VT-d: Reduce spin timeout to 1ms, which can be boot-time changed.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 23.12.15 at 09:25, <quan.xu@xxxxxxxxx> wrote:
> --- a/xen/drivers/passthrough/vtd/qinval.c
> +++ b/xen/drivers/passthrough/vtd/qinval.c
> @@ -28,6 +28,11 @@
>  #include "vtd.h"
>  #include "extern.h"
>  
> +static int __read_mostly iommu_qi_timeout_ms = 1;
> +integer_param("iommu_qi_timeout_ms", iommu_qi_timeout_ms);

But wait - this needs to be accompanied by an entry in
docs/misc/xen-command-line.markdown.

Jan


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