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Commit 69870a84 authored by David Vrabel's avatar David Vrabel Committed by Konrad Rzeszutek Wilk
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xen/mm: return more precise error from xen_remap_domain_range() 



Callers of xen_remap_domain_range() need to know if the remap failed
because frame is currently paged out.  So they can retry the remap
later on.  Return -ENOENT in this case.

This assumes that the error codes returned by Xen are a subset of
those used by the kernel.  It is unclear if this is defined as part of
the hypercall ABI.

Acked-by: default avatarAndres Lagar-Cavilla <andres@lagarcavilla.org>
Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent 6d7083ee

arch/x86/xen/mmu.c

+2 −2
Original line number Diff line number Diff line
@@ -2331,8 +2331,8 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma, 
		if (err)

			goto out;



		err = -EFAULT;

		if (HYPERVISOR_mmu_update(mmu_update, batch, NULL, domid) < 0)

		err = HYPERVISOR_mmu_update(mmu_update, batch, NULL, domid);

		if (err < 0)

			goto out;



		nr -= batch;