From 69870a847856a1ba81f655a8633fce5f5b614730 Mon Sep 17 00:00:00 2001 From: David Vrabel <david.vrabel@citrix.com> Date: Thu, 30 Aug 2012 13:58:11 +0100 Subject: 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> --- arch/x86/xen/mmu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 885a22354a9..2d9e7c9c0e7 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; -- cgit v1.2.3-18-g5258