[PATCH 1/3] Make xen_remap_domain_mfn_range return value meaningful in case of error
From: Adin Scannell
Date: Tue Dec 20 2011 - 01:44:38 EST
Original patch from Olaf Hering <ohering@xxxxxxxxxx>
This change fixes the xc_map_foreign_bulk interface, which would
otherwise cause SIGBUS when pages are gone because -ENOENT is not
returned as expected by the IOCTL_PRIVCMD_MMAPBATCH_V2 ioctl.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
This is a port to the mainline Linux tree. Functions were refactored and
renamed. I believe that this is the only required change to match the
semantics of the original patch.
Signed-off-by: Adin Scannell <adin@xxxxxxxxxxx>
---
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 87f6673..288a7fc 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2350,8 +2350,8 @@ 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;
--
1.6.2.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/