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Add MSI capability support for VFIO devices #191

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merged 10 commits into from
Dec 15, 2024
Merged

Add MSI capability support for VFIO devices #191

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1394368
fix(mem): move the lock of MmioBus to Memory
Lencerf Nov 17, 2024
5cd177f
fix(mem): fix field lock order
Lencerf Nov 17, 2024
c19d854
fix(mmio): handle unaligned and partial read/write
Lencerf Nov 18, 2024
f7d8010
refactor(pci): move reset() of PciCap to a new trait
Lencerf Nov 22, 2024
32a8881
feat(pci): add NullCap for hiding capabilities
Lencerf Nov 25, 2024
14d9ec7
refactor(vfio): use MmioBus to model the PCI config space
Lencerf Nov 25, 2024
3fe4c89
fix(vfio): set init values of MsixMsgCtrl
Lencerf Nov 25, 2024
0460b5e
fix(vfio): set bit IO of device command reg
Lencerf Dec 15, 2024
7eb2426
feat(vfio): support PCI MSI capability
Lencerf Dec 15, 2024
d6e941d
fix(vfio): disable MSIX IRQs iff any was enabled
Lencerf Dec 15, 2024
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247 changes: 239 additions & 8 deletions Cargo.lock
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1 change: 1 addition & 0 deletions Cargo.toml
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Expand Up @@ -21,6 +21,7 @@ assert_matches = "1"
proc-macro2 = "1"
syn = { version = "2", features = ["full"] }
quote = { version = "1" }
rstest = "0.23"

[profile.release]
lto = true
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1 change: 1 addition & 0 deletions alioth/Cargo.toml
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Expand Up @@ -28,3 +28,4 @@ io-uring = "0.7"

[dev-dependencies]
assert_matches.workspace = true
rstest.workspace = true
3 changes: 1 addition & 2 deletions alioth/src/hv/kvm/vmexit.rs
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Expand Up @@ -23,11 +23,10 @@ impl KvmVcpu {
#[cfg(target_endian = "little")]
pub(super) fn handle_mmio(&mut self) -> Result<VmExit, Error> {
let kvm_mmio = unsafe { &self.kvm_run.exit.mmio };
let data = u64::from_ne_bytes(kvm_mmio.data) & u64::MAX >> (64 - (kvm_mmio.len << 3));
let exit = VmExit::Mmio {
addr: kvm_mmio.phys_addr,
write: if kvm_mmio.is_write > 0 {
Some(data)
Some(u64::from_ne_bytes(kvm_mmio.data))
} else {
None
},
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