[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <87plumxz4x.ffs@tglx>
Date: Thu, 18 Apr 2024 21:13:34 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Lyude Paul <lyude@...hat.com>, Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: Early boot regression from f0551af0213 ("x86/topology: Ignore
non-present APIC IDs in a present package")
On Thu, Apr 18 2024 at 13:20, Lyude Paul wrote:
> Just gave it a try, unfortunately I'm still seeing the same result on
> that branch.
>
> One more piece of information I apparently missed when reporting this
> yesterday btw: I noticed one more kernel message that comes before the
> panic that's probably relevant:
>
> ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
Can you please apply the debug patch below which should make it boot
again.
Please also provide the output of the files underneath of
/sys/kernel/debug/x86/topo/
Thanks,
tglx
---
arch/x86/kernel/cpu/topology.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/arch/x86/kernel/cpu/topology.c
+++ b/arch/x86/kernel/cpu/topology.c
@@ -176,6 +176,8 @@ static __init void topo_register_apic(u3
{
int cpu, dom;
+ pr_info("APIC ID %x present %d\n", apic_id, present);
+
if (present) {
set_bit(apic_id, phys_cpu_present_map);
@@ -201,10 +203,7 @@ static __init void topo_register_apic(u3
*/
if (hypervisor_is_type(X86_HYPER_NATIVE) &&
topo_unit_count(pkgid, TOPO_PKG_DOMAIN, phys_cpu_present_map)) {
- pr_info_once("Ignoring hot-pluggable APIC ID %x in present package.\n",
- apic_id);
- topo_info.nr_rejected_cpus++;
- return;
+ pr_info("Hot-pluggable APIC ID %x in present package.\n", apic_id);
}
topo_info.nr_disabled_cpus++;
Powered by blists - more mailing lists