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hw/acpi: Update ACPI _STA method with QOM vCPU ACPI Hotplug states

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Reflect the QOM vCPUs ACPI CPU hotplug states in the `_STA.Present` and
and `_STA.Enabled` bits when the guest kernel evaluates the ACPI
`_STA` method during initialization, as well as when vCPUs are
hot-plugged or hot-unplugged. If the CPU is present then the its
`enabled` status can be fetched using architecture-specific code [1].

Reference:
[1] Example implementation of architecture-specific hook to fetch CPU
    `enabled status
    Link: c0b416b11e

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Message-Id: <20241103102419.202225-4-salil.mehta@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Salil Mehta 2024-11-03 10:24:17 +00:00 • committed by Michael S. Tsirkin
parent e98411c2cb
commit bf1ecc8dad
2 changed files with 35 additions and 4 deletions
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1
include/hw/core/cpu.h
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@ -159,6 +159,7 @@ struct CPUClass {
void (*query_cpu_fast)(CPUState *cpu, CpuInfoFast *value);
int64_t (*get_arch_id)(CPUState *cpu);
bool (*cpu_persistent_status)(CPUState *cpu);
bool (*cpu_enabled_status)(CPUState *cpu);
void (*set_pc)(CPUState *cpu, vaddr value);
vaddr (*get_pc)(CPUState *cpu);
int (*gdb_read_register)(CPUState *cpu, GByteArray *buf, int reg);