linux-kernel - [patch 26/58] x86/apic/32: Remove bigsmp_cpu_present_to

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Date:   Tue, 18 Jul 2023 01:15:14 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Wei Liu <wei.liu@...nel.org>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Juergen Gross <jgross@...e.com>
Subject: [patch 26/58] x86/apic/32: Remove bigsmp_cpu_present_to_apicid()

It's a copy of default_cpu_present_to_apicid() with the omission of the
actual check whether the CPU is present.

This APIC callback should die completely, but the XEN APIC implementation
does something different which needs to be addressed first.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/apic/bigsmp_32.c |   10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -43,14 +43,6 @@ static void bigsmp_setup_apic_routing(vo
 		nr_ioapics);
 }
 
-static int bigsmp_cpu_present_to_apicid(int mps_cpu)
-{
-	if (mps_cpu < nr_cpu_ids)
-		return (int) per_cpu(x86_cpu_to_apicid, mps_cpu);
-
-	return BAD_APICID;
-}
-
 static void bigsmp_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
 {
 	/* For clustered we don't have a good way to do this yet - hack */
@@ -119,7 +111,7 @@ static struct apic apic_bigsmp __ro_afte
 	.init_apic_ldr			= bigsmp_init_apic_ldr,
 	.ioapic_phys_id_map		= bigsmp_ioapic_phys_id_map,
 	.setup_apic_routing		= bigsmp_setup_apic_routing,
-	.cpu_present_to_apicid		= bigsmp_cpu_present_to_apicid,
+	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= physid_set_mask_of_physid,
 	.phys_pkg_id			= bigsmp_phys_pkg_id,