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arch: move test cases to vmm crate

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This saves us from adding a "kvm" feature to arch crate merely for the
purpose of running tests.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu
2020-07-08 12:48:46 +00:00
committed by Samuel Ortiz
parent 598eaf9f86
commit d80e383dbb
8 changed files with 277 additions and 259 deletions
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40
arch/src/x86_64/interrupts.rs
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@@ -23,12 +23,12 @@ pub enum Error {
pub type Result<T> = result::Result<T, hypervisor::HypervisorCpuError>;
// Defines poached from apicdef.h kernel header.
const APIC_LVT0: usize = 0x350;
const APIC_LVT1: usize = 0x360;
const APIC_MODE_NMI: u32 = 0x4;
const APIC_MODE_EXTINT: u32 = 0x7;
pub const APIC_LVT0: usize = 0x350;
pub const APIC_LVT1: usize = 0x360;
pub const APIC_MODE_NMI: u32 = 0x4;
pub const APIC_MODE_EXTINT: u32 = 0x7;
fn get_klapic_reg(klapic: &LapicState, reg_offset: usize) -> u32 {
pub fn get_klapic_reg(klapic: &LapicState, reg_offset: usize) -> u32 {
let sliceu8 = unsafe {
// This array is only accessed as parts of a u32 word, so interpret it as a u8 array.
// Cursors are only readable on arrays of u8, not i8(c_char).
@@ -41,7 +41,7 @@ fn get_klapic_reg(klapic: &LapicState, reg_offset: usize) -> u32 {
.expect("Failed to read klapic register")
}
fn set_klapic_reg(klapic: &mut LapicState, reg_offset: usize, value: u32) {
pub fn set_klapic_reg(klapic: &mut LapicState, reg_offset: usize, value: u32) {
let sliceu8 = unsafe {
// This array is only accessed as parts of a u32 word, so interpret it as a u8 array.
// Cursors are only readable on arrays of u8, not i8(c_char).
@@ -54,7 +54,7 @@ fn set_klapic_reg(klapic: &mut LapicState, reg_offset: usize, value: u32) {
.expect("Failed to write klapic register")
}
fn set_apic_delivery_mode(reg: u32, mode: u32) -> u32 {
pub fn set_apic_delivery_mode(reg: u32, mode: u32) -> u32 {
((reg) & !0x700) | ((mode) << 8)
}
@@ -118,30 +118,4 @@ mod tests {
let after: Vec<u32> = v.iter().map(|x| ((*x & !0x700) | ((2) << 8))).collect();
assert_eq!(v, after);
}
#[test]
fn test_setlint() {
let hv = hypervisor::new().unwrap();
let vm = hv.create_vm().expect("new VM fd creation failed");
assert!(hv.check_capability(hypervisor::kvm::Cap::Irqchip));
// Calling get_lapic will fail if there is no irqchip before hand.
assert!(vm.create_irq_chip().is_ok());
let vcpu = vm.create_vcpu(0).unwrap();
let klapic_before: LapicState = vcpu.get_lapic().unwrap();
// Compute the value that is expected to represent LVT0 and LVT1.
let lint0 = get_klapic_reg(&klapic_before, APIC_LVT0);
let lint1 = get_klapic_reg(&klapic_before, APIC_LVT1);
let lint0_mode_expected = set_apic_delivery_mode(lint0, APIC_MODE_EXTINT);
let lint1_mode_expected = set_apic_delivery_mode(lint1, APIC_MODE_NMI);
set_lint(&vcpu).unwrap();
// Compute the value that represents LVT0 and LVT1 after set_lint.
let klapic_actual: LapicState = vcpu.get_lapic().unwrap();
let lint0_mode_actual = get_klapic_reg(&klapic_actual, APIC_LVT0);
let lint1_mode_actual = get_klapic_reg(&klapic_actual, APIC_LVT1);
assert_eq!(lint0_mode_expected, lint0_mode_actual);
assert_eq!(lint1_mode_expected, lint1_mode_actual);
}
}