x86/xen: add reschedule point when mapping foreign GFNs

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@citrix.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
mariux64 · Oct 28, 2015 · 914beb9 · 914beb9
1 parent cb9644b
commit 914beb9
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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: