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vfio-ioctls: Remove conditional compilation to x86_64 for mshv feature #43

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Apr 10, 2024
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vfio-ioctls: Remove conditional compilation to x86_64 for mshv feature #43

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45 changes: 15 additions & 30 deletions crates/vfio-ioctls/src/vfio_device.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,23 +29,20 @@ use kvm_bindings::{
};
#[cfg(all(feature = "kvm", not(test)))]
use kvm_ioctls::DeviceFd as KvmDeviceFd;
#[cfg(all(feature = "mshv", target_arch = "x86_64", not(test)))]
#[cfg(all(feature = "mshv", not(test)))]
use mshv_bindings::{
mshv_device_attr, MSHV_DEV_VFIO_GROUP, MSHV_DEV_VFIO_GROUP_ADD, MSHV_DEV_VFIO_GROUP_DEL,
};
#[cfg(all(feature = "mshv", target_arch = "x86_64", not(test)))]
#[cfg(all(feature = "mshv", not(test)))]
use mshv_ioctls::DeviceFd as MshvDeviceFd;
#[cfg(all(
any(feature = "kvm", all(feature = "mshv", target_arch = "x86_64")),
not(test)
))]
#[cfg(all(any(feature = "kvm", feature = "mshv"), not(test)))]
use std::os::unix::io::FromRawFd;

#[derive(Debug)]
enum DeviceFdInner {
#[cfg(all(feature = "kvm", not(test)))]
Kvm(KvmDeviceFd),
#[cfg(all(feature = "mshv", target_arch = "x86_64", not(test)))]
#[cfg(all(feature = "mshv", not(test)))]
Mshv(MshvDeviceFd),
}

Expand All @@ -69,12 +66,12 @@ impl VfioDeviceFd {
}
}
/// Create an VfioDeviceFd from an MSHV DeviceFd
#[cfg(all(feature = "mshv", target_arch = "x86_64", not(test)))]
#[cfg(all(feature = "mshv", not(test)))]
pub fn new_from_mshv(fd: MshvDeviceFd) -> Self {
VfioDeviceFd(DeviceFdInner::Mshv(fd))
}
/// Extract the MSHV DeviceFd from an VfioDeviceFd
#[cfg(all(feature = "mshv", target_arch = "x86_64", not(test)))]
#[cfg(all(feature = "mshv", not(test)))]
pub fn to_mshv(self) -> Result<MshvDeviceFd> {
match self {
VfioDeviceFd(DeviceFdInner::Mshv(fd)) => Ok(fd),
Expand All @@ -83,10 +80,7 @@ impl VfioDeviceFd {
}
}
/// Try to duplicate an VfioDeviceFd
#[cfg(all(
any(feature = "kvm", all(feature = "mshv", target_arch = "x86_64")),
not(test)
))]
#[cfg(all(any(feature = "kvm", feature = "mshv"), not(test)))]
pub fn try_clone(&self) -> Result<Self> {
match &self.0 {
#[cfg(feature = "kvm")]
Expand All @@ -101,7 +95,7 @@ impl VfioDeviceFd {
Ok(VfioDeviceFd(DeviceFdInner::Kvm(kvm_fd)))
}
}
#[cfg(all(feature = "mshv", target_arch = "x86_64"))]
#[cfg(feature = "mshv")]
DeviceFdInner::Mshv(fd) => {
// SAFETY: FFI call to libc
let dup_fd = unsafe { libc::dup(fd.as_raw_fd()) };
Expand Down Expand Up @@ -243,7 +237,7 @@ impl VfioContainer {
}

// Add the new group object to the hypervisor driver.
#[cfg(any(feature = "kvm", all(feature = "mshv", target_arch = "x86_64")))]
#[cfg(any(feature = "kvm", feature = "mshv"))]
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if let Err(e) = self.device_add_group(&group) {
let _ = vfio_syscall::unset_group_container(&group, self);
return Err(e);
Expand All @@ -264,7 +258,7 @@ impl VfioContainer {
// - one reference cloned in VfioDevice.drop() and passed into here
// - one reference held by the groups hashmap
if Arc::strong_count(&group) == 3 {
#[cfg(any(feature = "kvm", all(feature = "mshv", target_arch = "x86_64")))]
#[cfg(any(feature = "kvm", feature = "mshv"))]
match self.device_del_group(&group) {
Ok(_) => {}
Err(e) => {
Expand Down Expand Up @@ -349,10 +343,7 @@ impl VfioContainer {
})
}

#[cfg(all(
any(feature = "kvm", all(feature = "mshv", target_arch = "x86_64")),
not(test)
))]
#[cfg(all(any(feature = "kvm", feature = "mshv"), not(test)))]
fn device_set_group(&self, group: &VfioGroup, add: bool) -> Result<()> {
let group_fd_ptr = &group.as_raw_fd() as *const i32;

Expand All @@ -374,7 +365,7 @@ impl VfioContainer {
fd.set_device_attr(&dev_attr)
.map_err(VfioError::SetDeviceAttr)
}
#[cfg(all(feature = "mshv", target_arch = "x86_64"))]
#[cfg(feature = "mshv")]
DeviceFdInner::Mshv(fd) => {
let flag = if add {
MSHV_DEV_VFIO_GROUP_ADD
Expand All @@ -388,7 +379,7 @@ impl VfioContainer {
addr: group_fd_ptr as u64,
};
fd.set_device_attr(&dev_attr)
.map_err(VfioError::SetDeviceAttr)
.map_err(|e| VfioError::SetDeviceAttr(e.into()))
}
}
} else {
Expand All @@ -402,10 +393,7 @@ impl VfioContainer {
///
/// # Parameters
/// * group: target VFIO group
#[cfg(all(
any(feature = "kvm", all(feature = "mshv", target_arch = "x86_64")),
not(test)
))]
#[cfg(all(any(feature = "kvm", feature = "mshv"), not(test)))]
fn device_add_group(&self, group: &VfioGroup) -> Result<()> {
self.device_set_group(group, true)
}
Expand All @@ -416,10 +404,7 @@ impl VfioContainer {
///
/// # Parameters
/// * group: target VFIO group
#[cfg(all(
any(feature = "kvm", all(feature = "mshv", target_arch = "x86_64")),
not(test)
))]
#[cfg(all(any(feature = "kvm", feature = "mshv"), not(test)))]
fn device_del_group(&self, group: &VfioGroup) -> Result<()> {
self.device_set_group(group, false)
}
Expand Down