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| author | Paolo Bonzini <[email protected]> | 2015-11-24 18:34:40 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2015-11-24 18:34:40 +0000 |
| commit | 8bd142c01648cdb33e9bcafa0448ba2c20ed814c (patch) | |
| tree | 9197c60d3f9d4036f38f281a183e94750ceea1d7 /fs/dax.c | |
| parent | Merge tag 'kvm-s390-master-4.4-1' of git://git.kernel.org/pub/scm/linux/kerne... (diff) | |
| parent | arm64: kvm: report original PAR_EL1 upon panic (diff) | |
| download | kernel-8bd142c01648cdb33e9bcafa0448ba2c20ed814c.tar.gz kernel-8bd142c01648cdb33e9bcafa0448ba2c20ed814c.zip | |
Merge tag 'kvm-arm-for-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/ARM Fixes for v4.4-rc3.
Includes some timer fixes, properly unmapping PTEs, an errata fix, and two
tweaks to the EL2 panic code.
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -541,6 +541,10 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, unsigned long pfn; int result = 0; + /* dax pmd mappings are broken wrt gup and fork */ + if (!IS_ENABLED(CONFIG_FS_DAX_PMD)) + return VM_FAULT_FALLBACK; + /* Fall back to PTEs if we're going to COW */ if (write && !(vma->vm_flags & VM_SHARED)) return VM_FAULT_FALLBACK; |