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virtio-devices: Rename address translation function for more clarity

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Renaming translate() to translate_gva() to clarify we want to translate
a GVA address into a GPA.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2022-04-04 13:35:24 +02:00
parent 16c525b2c0
commit 059e787cb5
11 changed files with 48 additions and 33 deletions
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7
block_util/src/lib.rs
View File

@ -209,7 +209,7 @@ impl Request {
let hdr_desc_addr = hdr_desc
.addr()
.translate(access_platform, hdr_desc.len() as usize);
.translate_gva(access_platform, hdr_desc.len() as usize);
let mut req = Request {
request_type: request_type(desc_chain.memory(), hdr_desc_addr)?,
@ -249,7 +249,8 @@ impl Request {
}
req.data_descriptors.push((
desc.addr().translate(access_platform, desc.len() as usize),
desc.addr()
.translate_gva(access_platform, desc.len() as usize),
desc.len(),
));
desc = desc_chain
@ -274,7 +275,7 @@ impl Request {
req.status_addr = status_desc
.addr()
.translate(access_platform, status_desc.len() as usize);
.translate_gva(access_platform, status_desc.len() as usize);
Ok(req)
}

6
net_util/src/ctrl_queue.rs
View File

@ -71,14 +71,14 @@ impl CtrlQueue {
.read_obj(
ctrl_desc
.addr()
.translate(access_platform, ctrl_desc.len() as usize),
.translate_gva(access_platform, ctrl_desc.len() as usize),
)
.map_err(Error::GuestMemory)?;
let data_desc = desc_chain.next().ok_or(Error::NoDataDescriptor)?;
let data_desc_addr = data_desc
.addr()
.translate(access_platform, data_desc.len() as usize);
.translate_gva(access_platform, data_desc.len() as usize);
let status_desc = desc_chain.next().ok_or(Error::NoStatusDescriptor)?;
@ -135,7 +135,7 @@ impl CtrlQueue {
if ok { VIRTIO_NET_OK } else { VIRTIO_NET_ERR } as u8,
status_desc
.addr()
.translate(access_platform, status_desc.len() as usize),
.translate_gva(access_platform, status_desc.len() as usize),
)
.map_err(Error::GuestMemory)?;
let len = ctrl_desc.len() + data_desc.len() + status_desc.len();

11
net_util/src/queue_pair.rs
View File

@ -60,7 +60,9 @@ impl TxVirtio {
let mut iovecs = Vec::new();
while let Some(desc) = next_desc {
let desc_addr = desc.addr().translate(access_platform, desc.len() as usize);
let desc_addr = desc
.addr()
.translate_gva(access_platform, desc.len() as usize);
if !desc.is_write_only() && desc.len() > 0 {
let buf = desc_chain
.memory()
@ -192,7 +194,8 @@ impl RxVirtio {
let num_buffers_addr = desc_chain
.memory()
.checked_offset(
desc.addr().translate(access_platform, desc.len() as usize),
desc.addr()
.translate_gva(access_platform, desc.len() as usize),
10,
)
.unwrap();
@ -200,7 +203,9 @@ impl RxVirtio {
let mut iovecs = Vec::new();
while let Some(desc) = next_desc {
let desc_addr = desc.addr().translate(access_platform, desc.len() as usize);
let desc_addr = desc
.addr()
.translate_gva(access_platform, desc.len() as usize);
if desc.is_write_only() && desc.len() > 0 {
let buf = desc_chain
.memory()

4
virtio-devices/src/console.rs
View File

@ -151,7 +151,7 @@ impl ConsoleEpollHandler {
if let Err(e) = desc_chain.memory().write_slice(
&source_slice[..],
desc.addr()
.translate(self.access_platform.as_ref(), desc.len() as usize),
.translate_gva(self.access_platform.as_ref(), desc.len() as usize),
) {
error!("Failed to write slice: {:?}", e);
avail_iter.go_to_previous_position();
@ -190,7 +190,7 @@ impl ConsoleEpollHandler {
if let Some(ref mut out) = self.endpoint.out_file() {
let _ = desc_chain.memory().write_to(
desc.addr()
.translate(self.access_platform.as_ref(), desc.len() as usize),
.translate_gva(self.access_platform.as_ref(), desc.len() as usize),
out,
desc.len() as usize,
);

3
virtio-devices/src/device.rs
View File

@ -207,7 +207,8 @@ pub trait VirtioDevice: Send {
/// On the other side, the implementation itself should be provided by the code
/// emulating the IOMMU for the guest.
pub trait DmaRemapping: Send + Sync {
fn translate(&self, id: u32, addr: u64) -> std::result::Result<u64, std::io::Error>;
/// Provide a way to translate GVA address ranges into GPAs.
fn translate_gva(&self, id: u32, addr: u64) -> std::result::Result<u64, std::io::Error>;
}
/// Structure to handle device state common to all devices

6
virtio-devices/src/iommu.rs
View File

@ -683,7 +683,7 @@ pub struct IommuMapping {
}
impl DmaRemapping for IommuMapping {
fn translate(&self, id: u32, addr: u64) -> std::result::Result<u64, std::io::Error> {
fn translate_gva(&self, id: u32, addr: u64) -> std::result::Result<u64, std::io::Error> {
debug!("Translate addr 0x{:x}", addr);
if let Some(domain) = self.endpoints.read().unwrap().get(&id) {
if let Some(mapping) = self.mappings.read().unwrap().get(domain) {
@ -720,8 +720,8 @@ impl AccessPlatformMapping {
}
impl AccessPlatform for AccessPlatformMapping {
fn translate(&self, base: u64, _size: u64) -> std::result::Result<u64, std::io::Error> {
self.mapping.translate(self.id, base)
fn translate_gva(&self, base: u64, _size: u64) -> std::result::Result<u64, std::io::Error> {
self.mapping.translate_gva(self.id, base)
}
}

7
virtio-devices/src/pmem.rs
View File

@ -133,7 +133,10 @@ impl Request {
let request: VirtioPmemReq = desc_chain
.memory()
.read_obj(desc.addr().translate(access_platform, desc.len() as usize))
.read_obj(
desc.addr()
.translate_gva(access_platform, desc.len() as usize),
)
.map_err(Error::GuestMemory)?;
let request_type = match request.type_ {
@ -156,7 +159,7 @@ impl Request {
type_: request_type,
status_addr: status_desc
.addr()
.translate(access_platform, status_desc.len() as usize),
.translate_gva(access_platform, status_desc.len() as usize),
})
}
}

2
virtio-devices/src/rng.rs
View File

@ -61,7 +61,7 @@ impl RngEpollHandler {
.memory()
.read_from(
desc.addr()
.translate(self.access_platform.as_ref(), desc.len() as usize),
.translate_gva(self.access_platform.as_ref(), desc.len() as usize),
&mut self.random_file,
desc.len() as usize,
)

14
virtio-devices/src/transport/pci_common_config.rs
View File

@ -204,11 +204,15 @@ impl VirtioPciCommonConfig {
// Translate address of descriptor table and vrings.
if let Some(access_platform) = &self.access_platform {
if ready {
let desc_table =
access_platform.translate(q.state.desc_table.0, 0).unwrap();
let avail_ring =
access_platform.translate(q.state.avail_ring.0, 0).unwrap();
let used_ring = access_platform.translate(q.state.used_ring.0, 0).unwrap();
let desc_table = access_platform
.translate_gva(q.state.desc_table.0, 0)
.unwrap();
let avail_ring = access_platform
.translate_gva(q.state.avail_ring.0, 0)
.unwrap();
let used_ring = access_platform
.translate_gva(q.state.used_ring.0, 0)
.unwrap();
q.set_desc_table_address(
Some((desc_table & 0xffff_ffff) as u32),
Some((desc_table >> 32) as u32),

10
virtio-devices/src/vsock/packet.rs
View File

@ -127,7 +127,8 @@ impl VsockPacket {
let mut pkt = Self {
hdr: get_host_address_range(
desc_chain.memory(),
head.addr().translate(access_platform, head.len() as usize),
head.addr()
.translate_gva(access_platform, head.len() as usize),
VSOCK_PKT_HDR_SIZE,
)
.ok_or(VsockError::GuestMemory)? as *mut u8,
@ -166,7 +167,7 @@ impl VsockPacket {
desc_chain.memory(),
buf_desc
.addr()
.translate(access_platform, buf_desc.len() as usize),
.translate_gva(access_platform, buf_desc.len() as usize),
pkt.buf_size,
)
.ok_or(VsockError::GuestMemory)? as *mut u8,
@ -207,7 +208,8 @@ impl VsockPacket {
Ok(Self {
hdr: get_host_address_range(
desc_chain.memory(),
head.addr().translate(access_platform, head.len() as usize),
head.addr()
.translate_gva(access_platform, head.len() as usize),
VSOCK_PKT_HDR_SIZE,
)
.ok_or(VsockError::GuestMemory)? as *mut u8,
@ -216,7 +218,7 @@ impl VsockPacket {
desc_chain.memory(),
buf_desc
.addr()
.translate(access_platform, buf_desc.len() as usize),
.translate_gva(access_platform, buf_desc.len() as usize),
buf_size,
)
.ok_or(VsockError::GuestMemory)? as *mut u8,

11
vm-virtio/src/lib.rs
View File

@ -94,19 +94,18 @@ impl fmt::Display for VirtioDeviceType {
/// Trait for devices with access to data in memory being limited and/or
/// translated.
pub trait AccessPlatform: Send + Sync + Debug {
/// Provide a way to translate address ranges.
fn translate(&self, base: u64, size: u64) -> std::result::Result<u64, std::io::Error>;
/// Provide a way to translate GVA address ranges into GPAs.
fn translate_gva(&self, base: u64, size: u64) -> std::result::Result<u64, std::io::Error>;
}
pub trait Translatable {
#[must_use]
fn translate(&self, access_platform: Option<&Arc<dyn AccessPlatform>>, len: usize) -> Self;
fn translate_gva(&self, access_platform: Option<&Arc<dyn AccessPlatform>>, len: usize) -> Self;
}
impl Translatable for GuestAddress {
fn translate(&self, access_platform: Option<&Arc<dyn AccessPlatform>>, len: usize) -> Self {
fn translate_gva(&self, access_platform: Option<&Arc<dyn AccessPlatform>>, len: usize) -> Self {
if let Some(access_platform) = access_platform {
GuestAddress(access_platform.translate(self.0, len as u64).unwrap())
GuestAddress(access_platform.translate_gva(self.0, len as u64).unwrap())
} else {
*self
}