Revert "feat(x86_64): 添加KVM时钟源支持"

kernel/src/arch/x86_64/driver/tsc.rs

@@ -35,10 +35,6 @@ impl TSCManager {
             return Err(SystemError::ENODEV);
         }
 
-        if Self::cpu_khz() != 0 && Self::tsc_khz() != 0 {
-            return Ok(());
-        }
-
         if unsafe { TSC_KHZ == 0 } {
             if let Err(e) = Self::determine_cpu_tsc_frequency(false) {
                 error!("Failed to determine CPU TSC frequency: {:?}", e);
@@ -389,14 +385,6 @@ impl TSCManager {
             TSC_KHZ = khz;
         }
     }
-
-    pub(crate) fn set_khz_from_kvm(khz: u64) {
-        if khz == 0 {
-            return;
-        }
-        Self::set_cpu_khz(khz);
-        Self::set_tsc_khz(khz);
-    }
 }
 
 /// # 从calibrate_cpu_by_pit_hpet_ptimer 解耦出，减少calibrate_cpu_by_pit_hpet_ptimer的栈帧

kernel/src/arch/x86_64/init/mod.rs

@@ -9,7 +9,7 @@ use x86::dtables::DescriptorTablePointer;
 
 use crate::{
     arch::{fpu::FpState, interrupt::trap::arch_trap_init, process::table::TSSManager},
-    driver::clocksource::{acpi_pm::init_acpi_pm_clocksource, kvm_clock},
+    driver::clocksource::acpi_pm::init_acpi_pm_clocksource,
     init::init::start_kernel,
     mm::{MemoryManagementArch, PhysAddr},
 };
@@ -109,12 +109,10 @@ pub fn setup_arch() -> Result<(), SystemError> {
 /// 架构相关的初始化（在IDLE的最后一个阶段）
 #[inline(never)]
 pub fn setup_arch_post() -> Result<(), SystemError> {
-    let kvmclock_ok = kvm_clock::kvmclock_init();
-
     let ret = hpet_init();
     if ret.is_ok() {
         hpet_instance().hpet_enable().expect("hpet enable failed");
-    } else if !kvmclock_ok {
+    } else {
         init_acpi_pm_clocksource().expect("acpi_pm_timer inits failed");
     }
     TSCManager::init().expect("tsc init failed");

kernel/src/arch/x86_64/mod.rs

@@ -11,13 +11,11 @@ pub mod interrupt;
 pub mod ipc;
 pub mod kexec;
 pub mod kprobe;
-pub mod kvm_para;
 pub mod libs;
 pub mod mm;
 pub mod msi;
 pub mod pci;
 pub mod process;
-pub mod pvclock;
 pub mod rand;
 pub mod reboot;
 pub mod sched;