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authorGleb Fotengauer-Malinovskiy <glebfm@altlinux.org>2017-07-11 00:22:33 +0300
committerRadim Krčmář <rkrcmar@redhat.com>2017-07-12 22:38:26 +0200
commit949c033694864082db9b3f5304723a6d7407f8e2 (patch)
tree74924370cd355016240e1858987ea53c12f3ab63 /include/uapi
parent48ae0fb49b2e8380e60c5072f18005c8a98c6520 (diff)
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/uapi')
-rw-r--r--include/uapi/linux/kvm.h2
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)