We never had a 31bit QEMU/kuli running. We would need to review several
ioctls to check if this creates holes, bugs or whatever to make it work.
Lets just disable compat support for KVM on s390.
Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com>
---
virt/kvm/Kconfig | 4 ++++
virt/kvm/kvm_main.c | 12 ++++++------
2 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
index fc0c5e6..e84d87c 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -37,3 +37,7 @@ config HAVE_KVM_CPU_RELAX_INTERCEPT
config KVM_VFIO
bool
+
+config KVM_COMPAT
+ def_bool y
+ depends on COMPAT && !S390
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 67252e4..5894bf9 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -89,7 +89,7 @@ struct dentry *kvm_debugfs_dir;
static long kvm_vcpu_ioctl(struct file *file, unsigned int ioctl,
unsigned long arg);
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_KVM_COMPAT
static long kvm_vcpu_compat_ioctl(struct file *file, unsigned int ioctl,
unsigned long arg);
#endif
@@ -1944,7 +1944,7 @@ static int kvm_vcpu_release(struct inode *inode, struct
file *filp)
static struct file_operations kvm_vcpu_fops = {
.release = kvm_vcpu_release,
.unlocked_ioctl = kvm_vcpu_ioctl,
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_KVM_COMPAT
.compat_ioctl = kvm_vcpu_compat_ioctl,
#endif
.mmap = kvm_vcpu_mmap,
@@ -2225,7 +2225,7 @@ out:
return r;
}
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_KVM_COMPAT
static long kvm_vcpu_compat_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
@@ -2317,7 +2317,7 @@ static int kvm_device_release(struct inode *inode, struct
file *filp)
static const struct file_operations kvm_device_fops = {
.unlocked_ioctl = kvm_device_ioctl,
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_KVM_COMPAT
.compat_ioctl = kvm_device_ioctl,
#endif
.release = kvm_device_release,
@@ -2606,7 +2606,7 @@ out:
return r;
}
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_KVM_COMPAT
struct compat_kvm_dirty_log {
__u32 slot;
__u32 padding1;
@@ -2653,7 +2653,7 @@ out:
static struct file_operations kvm_vm_fops = {
.release = kvm_vm_release,
.unlocked_ioctl = kvm_vm_ioctl,
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_KVM_COMPAT
.compat_ioctl = kvm_vm_compat_ioctl,
#endif
.llseek = noop_llseek,
--
1.9.3
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