diff options
| author | Alexander Graf <graf@amazon.com> | 2022-10-17 20:45:39 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-10-22 05:15:23 -0400 |
| commit | ed51862f2f57cbce6fed2d4278cfe70a490899fd (patch) | |
| tree | 2d5d8bcf85ac82de36beb002890d3e5fbb8a0b22 /virt | |
| parent | 21e6075974c82808fc46ffc72384f2cc8074777f (diff) | |
| download | lwn-ed51862f2f57cbce6fed2d4278cfe70a490899fd.tar.gz lwn-ed51862f2f57cbce6fed2d4278cfe70a490899fd.zip | |
kvm: Add support for arch compat vm ioctls
We will introduce the first architecture specific compat vm ioctl in the
next patch. Add all necessary boilerplate to allow architectures to
override compat vm ioctls when necessary.
Signed-off-by: Alexander Graf <graf@amazon.com>
Message-Id: <20221017184541.2658-2-graf@amazon.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index e30f1b4ecfa5..1376a47fedee 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -4839,6 +4839,12 @@ struct compat_kvm_clear_dirty_log { }; }; +long __weak kvm_arch_vm_compat_ioctl(struct file *filp, unsigned int ioctl, + unsigned long arg) +{ + return -ENOTTY; +} + static long kvm_vm_compat_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { @@ -4847,6 +4853,11 @@ static long kvm_vm_compat_ioctl(struct file *filp, if (kvm->mm != current->mm || kvm->vm_dead) return -EIO; + + r = kvm_arch_vm_compat_ioctl(filp, ioctl, arg); + if (r != -ENOTTY) + return r; + switch (ioctl) { #ifdef CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT case KVM_CLEAR_DIRTY_LOG: { |