Messages in this thread Patch in this message | | | From | Juergen Gross <> | Subject | [PATCH 1/2] x86/cpu: fix BSP detection when running as Xen PV guest | Date | Fri, 5 Apr 2024 14:34:33 +0200 |
| |
When booting as a Xen PV guest the boot processor isn't detected correctly and the following message is shown:
CPU topo: Boot CPU APIC ID not the first enumerated APIC ID: 0 > 1
Additionally this results in one CPU being ignored.
Fix that by calling the BSP detection logic when registering the boot CPU's APIC, too.
Fixes: 5c5682b9f87a ("x86/cpu: Detect real BSP on crash kernels") Signed-off-by: Juergen Gross <jgross@suse.com> --- arch/x86/kernel/cpu/topology.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c index aaca8d235dc2..23c3db5e6396 100644 --- a/arch/x86/kernel/cpu/topology.c +++ b/arch/x86/kernel/cpu/topology.c @@ -255,7 +255,7 @@ void __init topology_register_boot_apic(u32 apic_id) WARN_ON_ONCE(topo_info.boot_cpu_apic_id != BAD_APICID); topo_info.boot_cpu_apic_id = apic_id; - topo_register_apic(apic_id, CPU_ACPIID_INVALID, true); + topology_register_apic(apic_id, CPU_ACPIID_INVALID, true); } /** -- 2.35.3
| |