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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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vmm: Split configure_system() from load_kernel() for x86_64
Now the flow of both architectures are aligned to: 1. load kernel 2. create VCPU's 3. configure system 4. start VCPU's Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit is contained in:
parent
20cf21cd9d
commit
969e5e0b51
@ -50,6 +50,8 @@ pub struct EntryPoint {
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pub entry_addr: GuestAddress,
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pub entry_addr: GuestAddress,
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/// Specifies which boot protocol to use
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/// Specifies which boot protocol to use
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pub protocol: BootProtocol,
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pub protocol: BootProtocol,
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/// This field is used for bzImage to fill zero page
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pub setup_header: Option<setup_header>,
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}
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}
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const E820_RAM: u32 = 1;
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const E820_RAM: u32 = 1;
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109
vmm/src/vm.rs
109
vmm/src/vm.rs
@ -44,7 +44,6 @@ use devices::HotPlugNotificationFlags;
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#[cfg(target_arch = "x86_64")]
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#[cfg(target_arch = "x86_64")]
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use kvm_bindings::{kvm_enable_cap, kvm_userspace_memory_region, KVM_CAP_SPLIT_IRQCHIP};
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use kvm_bindings::{kvm_enable_cap, kvm_userspace_memory_region, KVM_CAP_SPLIT_IRQCHIP};
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use kvm_ioctls::*;
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use kvm_ioctls::*;
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#[cfg(target_arch = "x86_64")]
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use linux_loader::cmdline::Cmdline;
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use linux_loader::cmdline::Cmdline;
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#[cfg(target_arch = "x86_64")]
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#[cfg(target_arch = "x86_64")]
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use linux_loader::loader::elf::Error::InvalidElfMagicNumber;
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use linux_loader::loader::elf::Error::InvalidElfMagicNumber;
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@ -53,7 +52,6 @@ use linux_loader::loader::KernelLoader;
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use signal_hook::{iterator::Signals, SIGINT, SIGTERM, SIGWINCH};
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use signal_hook::{iterator::Signals, SIGINT, SIGTERM, SIGWINCH};
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#[cfg(target_arch = "x86_64")]
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#[cfg(target_arch = "x86_64")]
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use std::convert::TryInto;
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use std::convert::TryInto;
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#[cfg(target_arch = "x86_64")]
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use std::ffi::CString;
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use std::ffi::CString;
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use std::fs::{File, OpenOptions};
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use std::fs::{File, OpenOptions};
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use std::io::{self, Write};
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use std::io::{self, Write};
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@ -475,13 +473,7 @@ impl Vm {
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Ok(arch::InitramfsConfig { address, size })
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Ok(arch::InitramfsConfig { address, size })
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}
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}
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#[cfg(target_arch = "aarch64")]
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fn get_cmdline(&mut self) -> Result<CString> {
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fn load_kernel(&mut self) -> Result<EntryPoint> {
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unimplemented!();
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}
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#[cfg(target_arch = "x86_64")]
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fn load_kernel(&mut self) -> Result<EntryPoint> {
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let mut cmdline = Cmdline::new(arch::CMDLINE_MAX_SIZE);
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let mut cmdline = Cmdline::new(arch::CMDLINE_MAX_SIZE);
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cmdline
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cmdline
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.insert_str(self.config.lock().unwrap().cmdline.args.clone())
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.insert_str(self.config.lock().unwrap().cmdline.args.clone())
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@ -489,8 +481,17 @@ impl Vm {
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for entry in self.device_manager.lock().unwrap().cmdline_additions() {
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for entry in self.device_manager.lock().unwrap().cmdline_additions() {
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cmdline.insert_str(entry).map_err(Error::CmdLineInsertStr)?;
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cmdline.insert_str(entry).map_err(Error::CmdLineInsertStr)?;
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}
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}
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Ok(CString::new(cmdline).map_err(Error::CmdLineCString)?)
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}
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let cmdline_cstring = CString::new(cmdline).map_err(Error::CmdLineCString)?;
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#[cfg(target_arch = "aarch64")]
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fn load_kernel(&mut self) -> Result<EntryPoint> {
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unimplemented!();
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}
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#[cfg(target_arch = "x86_64")]
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fn load_kernel(&mut self) -> Result<EntryPoint> {
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let cmdline_cstring = self.get_cmdline()?;
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let guest_memory = self.memory_manager.lock().as_ref().unwrap().guest_memory();
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let guest_memory = self.memory_manager.lock().as_ref().unwrap().guest_memory();
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let mem = guest_memory.memory();
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let mem = guest_memory.memory();
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let entry_addr = match linux_loader::loader::elf::Elf::load(
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let entry_addr = match linux_loader::loader::elf::Elf::load(
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@ -521,6 +522,46 @@ impl Vm {
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)
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)
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.map_err(Error::LoadCmdLine)?;
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.map_err(Error::LoadCmdLine)?;
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if entry_addr.setup_header.is_some() {
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let load_addr = entry_addr
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.kernel_load
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.raw_value()
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.checked_add(KERNEL_64BIT_ENTRY_OFFSET)
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.ok_or(Error::MemOverflow)?;
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Ok(EntryPoint {
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entry_addr: GuestAddress(load_addr),
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protocol: BootProtocol::LinuxBoot,
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setup_header: entry_addr.setup_header,
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})
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} else {
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let entry_point_addr: GuestAddress;
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let boot_prot: BootProtocol;
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if let Some(pvh_entry_addr) = entry_addr.pvh_entry_addr {
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// Use the PVH kernel entry point to boot the guest
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entry_point_addr = pvh_entry_addr;
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boot_prot = BootProtocol::PvhBoot;
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} else {
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// Use the Linux 64-bit boot protocol
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entry_point_addr = entry_addr.kernel_load;
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boot_prot = BootProtocol::LinuxBoot;
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}
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Ok(EntryPoint {
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entry_addr: entry_point_addr,
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protocol: boot_prot,
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setup_header: None,
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})
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}
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}
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#[cfg(target_arch = "x86_64")]
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fn configure_system(&mut self, entry_addr: EntryPoint) -> Result<()> {
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let cmdline_cstring = self.get_cmdline()?;
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let guest_memory = self.memory_manager.lock().as_ref().unwrap().guest_memory();
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let mem = guest_memory.memory();
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let initramfs_config = match self.initramfs {
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let initramfs_config = match self.initramfs {
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Some(_) => Some(self.load_initramfs(mem.deref())?),
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Some(_) => Some(self.load_initramfs(mem.deref())?),
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None => None,
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None => None,
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@ -554,32 +595,8 @@ impl Vm {
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BootProtocol::LinuxBoot,
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BootProtocol::LinuxBoot,
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)
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)
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.map_err(Error::ConfigureSystem)?;
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.map_err(Error::ConfigureSystem)?;
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let load_addr = entry_addr
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.kernel_load
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.raw_value()
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.checked_add(KERNEL_64BIT_ENTRY_OFFSET)
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.ok_or(Error::MemOverflow)?;
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Ok(EntryPoint {
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entry_addr: GuestAddress(load_addr),
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protocol: BootProtocol::LinuxBoot,
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})
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}
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}
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None => {
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None => {
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let entry_point_addr: GuestAddress;
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let boot_prot: BootProtocol;
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if let Some(pvh_entry_addr) = entry_addr.pvh_entry_addr {
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// Use the PVH kernel entry point to boot the guest
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entry_point_addr = pvh_entry_addr;
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boot_prot = BootProtocol::PvhBoot;
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} else {
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// Use the Linux 64-bit boot protocol
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entry_point_addr = entry_addr.kernel_load;
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boot_prot = BootProtocol::LinuxBoot;
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}
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arch::configure_system(
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arch::configure_system(
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&mem,
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&mem,
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arch::layout::CMDLINE_START,
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arch::layout::CMDLINE_START,
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@ -588,20 +605,20 @@ impl Vm {
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boot_vcpus,
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boot_vcpus,
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None,
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None,
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rsdp_addr,
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rsdp_addr,
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boot_prot,
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entry_addr.protocol,
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)
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)
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.map_err(Error::ConfigureSystem)?;
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.map_err(Error::ConfigureSystem)?;
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Ok(EntryPoint {
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entry_addr: entry_point_addr,
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protocol: boot_prot,
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})
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}
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}
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}
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}
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Ok(())
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}
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}
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#[cfg(target_arch = "aarch64")]
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#[cfg(target_arch = "aarch64")]
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fn configure_system(&mut self) -> Result<()> {
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fn configure_system(&mut self, _entry_addr: EntryPoint) -> Result<()> {
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let _cmdline_cstring = self.get_cmdline()?;
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// What to do on AArch64 is:
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// - Setup GIC
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// - Generate FDT
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unimplemented!();
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unimplemented!();
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}
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}
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@ -984,20 +1001,16 @@ impl Vm {
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let new_state = VmState::Running;
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let new_state = VmState::Running;
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current_state.valid_transition(new_state)?;
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current_state.valid_transition(new_state)?;
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// On x86_64, load_kernel() invokes configure_system().
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let entry_point = self.load_kernel()?;
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// But on aarch64, it only loads kernel, configure_system()
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// need to be postponed after VCPU's are created.
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let entry_addr = self.load_kernel()?;
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// create and configure vcpus
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// create and configure vcpus
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self.cpu_manager
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self.cpu_manager
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.lock()
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.lock()
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.unwrap()
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.unwrap()
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.create_boot_vcpus(entry_addr)
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.create_boot_vcpus(entry_point)
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.map_err(Error::CpuManager)?;
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.map_err(Error::CpuManager)?;
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#[cfg(target_arch = "aarch64")]
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self.configure_system(entry_point)?;
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self.configure_system()?;
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self.cpu_manager
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self.cpu_manager
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.lock()
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.lock()
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