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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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vmm/src/acpi.rs
+2 -2
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@@ -326,9 +326,9 @@ fn create_srat_table(
for cpu in &node.cpus {
#[cfg(target_arch = "x86_64")]
let x2apic_id = arch::x86_64::get_x2apic_id(*cpu as u32, topology);
let x2apic_id = arch::x86_64::get_x2apic_id(*cpu, topology);
#[cfg(target_arch = "aarch64")]
let x2apic_id = *cpu as u32;
let x2apic_id = *cpu;
// Flags
// - Enabled = 1 (bit 0)