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misc: Change cpu ID type from u8 to u32

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This is the first change to Cloud Hypervisor in a series of changes
intended to increase the max number of supported vCPUs in guest VMs,
which is currently limited to 255 (254 on x86_64).

No user-visible/behavior changes are expected as a result of
applying this patch, as the type of boot_cpus and related
fields in config structs remains u8 for now, and all configuration
validations remain the same.

Signed-off-by: Barret Rhoden <brho@google.com>
Signed-off-by: Neel Natu <neelnatu@google.com>
Signed-off-by: Ofir Weisse <oweisse@google.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
This commit is contained in:
Peter Oskolkov
2025-07-29 19:02:20 +00:00
committed by Bo Chen
parent 5d478c534e
commit aa8e9cd91a
21 changed files with 116 additions and 123 deletions
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4
vmm/src/device_manager.rs
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@@ -1672,7 +1672,7 @@ impl DeviceManager {
) -> DeviceManagerResult<Arc<Mutex<dyn InterruptController>>> {
let interrupt_controller: Arc<Mutex<gic::Gic>> = Arc::new(Mutex::new(
gic::Gic::new(
self.config.lock().unwrap().cpus.boot_vcpus,
self.config.lock().unwrap().cpus.boot_vcpus as u32,
Arc::clone(&self.msi_interrupt_manager),
self.address_manager.vm.clone(),
)
@@ -1725,7 +1725,7 @@ impl DeviceManager {
) -> DeviceManagerResult<Arc<Mutex<dyn InterruptController>>> {
let interrupt_controller: Arc<Mutex<aia::Aia>> = Arc::new(Mutex::new(
aia::Aia::new(
self.config.lock().unwrap().cpus.boot_vcpus,
self.config.lock().unwrap().cpus.boot_vcpus as u32,
Arc::clone(&self.msi_interrupt_manager),
self.address_manager.vm.clone(),
)