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x86/xen: add reschedule point when mapping foreign GFNs

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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>
This commit is contained in:
David Vrabel
2015-10-28 13:39:05 +00:00
parent cb9644bf3b
commit 914beb9fc2
1 changed files with 1 additions and 0 deletions
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arch/x86/xen/mmu.c
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@@ -2888,6 +2888,7 @@ static int do_remap_gfn(struct vm_area_struct *vma,
addr += range; addr += range;
if (err_ptr) if (err_ptr)
err_ptr += batch; err_ptr += batch;
cond_resched();
} }
out: out: