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| author | Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> | 2017-07-11 00:22:33 +0300 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2017-07-12 22:38:26 +0200 |
| commit | 949c033694864082db9b3f5304723a6d7407f8e2 (patch) | |
| tree | 74924370cd355016240e1858987ea53c12f3ab63 /include | |
| parent | 48ae0fb49b2e8380e60c5072f18005c8a98c6520 (diff) | |
| download | linux-stable-949c033694864082db9b3f5304723a6d7407f8e2.tar.gz linux-stable-949c033694864082db9b3f5304723a6d7407f8e2.tar.bz2 linux-stable-949c033694864082db9b3f5304723a6d7407f8e2.zip | |
KVM: s390: Fix KVM_S390_GET_CMMA_BITS ioctl definition
In case of KVM_S390_GET_CMMA_BITS, the kernel does not only read struct
kvm_s390_cmma_log passed from userspace (which constitutes _IOC_WRITE),
it also writes back a return value (which constitutes _IOC_READ) making
this an _IOWR ioctl instead of _IOW.
Fixes: 4036e387 ("KVM: s390: ioctls to get and set guest storage attributes")
Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/kvm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index c0b6dfec5f87..ebd604c222d8 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1351,7 +1351,7 @@ struct kvm_s390_ucas_mapping { /* Available with KVM_CAP_X86_SMM */ #define KVM_SMI _IO(KVMIO, 0xb7) /* Available with KVM_CAP_S390_CMMA_MIGRATION */ -#define KVM_S390_GET_CMMA_BITS _IOW(KVMIO, 0xb8, struct kvm_s390_cmma_log) +#define KVM_S390_GET_CMMA_BITS _IOWR(KVMIO, 0xb8, struct kvm_s390_cmma_log) #define KVM_S390_SET_CMMA_BITS _IOW(KVMIO, 0xb9, struct kvm_s390_cmma_log) #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) |