| Message ID | 20240212154640.177504138@linutronix.de |
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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org,
Tom Lendacky <thomas.lendacky@amd.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Arjan van de Ven <arjan@linux.intel.com>,
Huang Rui <ray.huang@amd.com>,
Juergen Gross <jgross@suse.com>,
Dimitri Sivanich <dimitri.sivanich@hpe.com>,
Sohil Mehta <sohil.mehta@intel.com>,
K Prateek Nayak <kprateek.nayak@amd.com>,
Kan Liang <kan.liang@linux.intel.com>,
Zhang Rui <rui.zhang@intel.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Feng Tang <feng.tang@intel.com>,
Andy Shevchenko <andy@infradead.org>,
Michael Kelley <mhklinux@outlook.com>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Wei Liu <wei.liu@kernel.org>
Subject: [patch V3 22/22] x86/apic: Use a proper define for invalid ACPI CPU
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References: <20240212154529.402604963@linutronix.de>
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Date: Tue, 13 Feb 2024 22:05:21 +0100 (CET)
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| Series |
x86/topology: More cleanups and preparatory work
|
|
Commit Message
Thomas Gleixner
Feb. 13, 2024, 9:05 p.m. UTC
From: Thomas Gleixner <tglx@linutronix.de> The ACPI ID for CPUs is preset with U32_MAX which is completely non obvious. Use a proper define for it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/x86/include/asm/apic.h | 3 +++ arch/x86/kernel/apic/apic.c | 2 +- arch/x86/xen/enlighten_hvm.c | 2 +- 3 files changed, 5 insertions(+), 2 deletions(-) ---
--- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -48,7 +48,10 @@ static inline void x86_32_probe_apic(voi extern u32 cpuid_to_apicid[]; +#define CPU_ACPIID_INVALID U32_MAX + #ifdef CONFIG_X86_LOCAL_APIC + extern int apic_verbosity; extern int local_apic_timer_c2_ok; --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -111,7 +111,7 @@ static inline bool apic_accessible(void) * Map cpu index to physical APIC ID */ DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_apicid, BAD_APICID); -DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid, U32_MAX); +DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid, CPU_ACPIID_INVALID); EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_apicid); EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_acpiid); --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -168,7 +168,7 @@ static int xen_cpu_up_prepare_hvm(unsign */ xen_uninit_lock_cpu(cpu); - if (cpu_acpi_id(cpu) != U32_MAX) + if (cpu_acpi_id(cpu) != CPU_ACPIID_INVALID) per_cpu(xen_vcpu_id, cpu) = cpu_acpi_id(cpu); else per_cpu(xen_vcpu_id, cpu) = cpu;