Re: [Xen-devel] [PATCHv2] x86/xen: add reschedule point when mapping foreign GFNs

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 10/28/2015 09:39 AM, David Vrabel wrote:
> Mapping a large range of foreign GFNs can take a long time, add a
> reschedule point after each batch of 16 GFNs.
>
> Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
> ---
> v2:
> - Move cond_resched() to outer loop.
> ---
>   arch/x86/xen/mmu.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
> index 9c479fe..ac161db 100644
> --- a/arch/x86/xen/mmu.c
> +++ b/arch/x86/xen/mmu.c
> @@ -2888,6 +2888,7 @@ static int do_remap_gfn(struct vm_area_struct *vma,
>                 addr += range;
>                 if (err_ptr)
>                         err_ptr += batch;
> +               cond_resched();
>         }
>   out:
>   

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>

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