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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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2
arch/src/aarch64/fdt.rs
View File

@@ -370,7 +370,7 @@ fn create_cpu_nodes(
if numa_nodes.len() > 1 {
for numa_node_idx in 0..numa_nodes.len() {
let numa_node = numa_nodes.get(&(numa_node_idx as u32));
if numa_node.unwrap().cpus.contains(&(cpu_id as u8)) {
if numa_node.unwrap().cpus.contains(&(cpu_id as u32)) {
fdt.property_u32("numa-node-id", numa_node_idx as u32)?;
}
}

2
arch/src/aarch64/mod.rs
View File

@@ -67,7 +67,7 @@ pub struct EntryPoint {
/// Configure the specified VCPU, and return its MPIDR.
pub fn configure_vcpu(
vcpu: &Arc<dyn hypervisor::Vcpu>,
id: u8,
id: u32,
boot_setup: Option<(EntryPoint, &GuestMemoryAtomic<GuestMemoryMmap>)>,
) -> super::Result<u64> {
if let Some((kernel_entry_point, _guest_memory)) = boot_setup {