diff options
| author | David Vrabel <david.vrabel@citrix.com> | 2012-08-30 13:58:11 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-09-05 16:36:15 -0400 |
| commit | 69870a847856a1ba81f655a8633fce5f5b614730 (patch) | |
| tree | bffa55330a2e8e61f0cd6bcf23e45121c21bbcc7 /arch/x86/xen/mmu.c | |
| parent | 6d7083eee3bc088d1fc30eefabd6263bca40c95a (diff) | |
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: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen/mmu.c')
| -rw-r--r-- | arch/x86/xen/mmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 885a22354a96..2d9e7c9c0e7b 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -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; |