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>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
Dick Kennedy <dick.kennedy@broadcom.com>,
James Smart <james.smart@broadcom.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, linux-hwmon@vger.kernel.org,
Jean Delvare <jdelvare@suse.com>, Huang Rui <ray.huang@amd.com>,
Guenter Roeck <linux@roeck-us.net>,
Steve Wahl <steve.wahl@hpe.com>,
Mike Travis <mike.travis@hpe.com>,
Dimitri Sivanich <dimitri.sivanich@hpe.com>,
Russ Anderson <russ.anderson@hpe.com>
Subject: [patch 08/29] x86/cpu: Remove pointless evaluation of x86_coreid_bits
Date: Mon, 24 Jul 2023 19:44:03 +0200 (CEST) [thread overview]
Message-ID: <20230724172844.162323021@linutronix.de> (raw)
In-Reply-To: <20230724155329.474037902@linutronix.de>
cpuinfo_x86::x86_coreid_bits is only used by the AMD numa topology code. No
point in evaluating it on non AMD systems.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/cpu/intel.c | 13 -------------
arch/x86/kernel/cpu/zhaoxin.c | 14 --------------
2 files changed, 27 deletions(-)
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -488,19 +488,6 @@ static void early_init_intel(struct cpui
setup_clear_cpu_cap(X86_FEATURE_PGE);
}
- if (c->cpuid_level >= 0x00000001) {
- u32 eax, ebx, ecx, edx;
-
- cpuid(0x00000001, &eax, &ebx, &ecx, &edx);
- /*
- * If HTT (EDX[28]) is set EBX[16:23] contain the number of
- * apicids which are reserved per package. Store the resulting
- * shift value for the package management code.
- */
- if (edx & (1U << 28))
- c->x86_coreid_bits = get_count_order((ebx >> 16) & 0xff);
- }
-
check_memory_type_self_snoop_errata(c);
/*
--- a/arch/x86/kernel/cpu/zhaoxin.c
+++ b/arch/x86/kernel/cpu/zhaoxin.c
@@ -65,20 +65,6 @@ static void early_init_zhaoxin(struct cp
set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC);
}
-
- if (c->cpuid_level >= 0x00000001) {
- u32 eax, ebx, ecx, edx;
-
- cpuid(0x00000001, &eax, &ebx, &ecx, &edx);
- /*
- * If HTT (EDX[28]) is set EBX[16:23] contain the number of
- * apicids which are reserved per package. Store the resulting
- * shift value for the package management code.
- */
- if (edx & (1U << 28))
- c->x86_coreid_bits = get_count_order((ebx >> 16) & 0xff);
- }
-
}
static void init_zhaoxin(struct cpuinfo_x86 *c)
next prev parent reply other threads:[~2023-07-24 17:45 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-24 17:43 [patch 00/29] x86/cpu: Rework the topology evaluation Thomas Gleixner
2023-07-24 17:43 ` [patch 01/29] x86/cpu: Encapsulate topology information in cpuinfo_x86 Thomas Gleixner
2023-07-25 7:46 ` Thomas Gleixner
2023-07-24 17:43 ` [patch 02/29] x86/cpu: Move phys_proc_id into topology info Thomas Gleixner
2023-07-24 17:43 ` [patch 03/29] x86/cpu: Move cpu_die_id " Thomas Gleixner
2023-07-24 17:43 ` [patch 04/29] scsi: lpfc: Use topology_core_id() Thomas Gleixner
2023-07-24 17:43 ` [patch 05/29] hwmon: (fam15h_power) " Thomas Gleixner
2023-07-24 17:53 ` Guenter Roeck
2023-07-24 17:43 ` [patch 06/29] x86/cpu: Move cpu_core_id into topology info Thomas Gleixner
2023-07-24 17:44 ` [patch 07/29] x86/cpu: Move cu_id " Thomas Gleixner
2023-07-24 17:44 ` Thomas Gleixner [this message]
2023-07-24 17:44 ` [patch 09/29] x86/cpu: Move logical package and die IDs " Thomas Gleixner
2023-07-24 17:44 ` [patch 10/29] x86/cpu: Move cpu_l[l2]c_id " Thomas Gleixner
2023-07-24 17:44 ` [patch 11/29] x86/cpu: Provide debug interface Thomas Gleixner
2023-07-24 17:44 ` [patch 12/29] x86/cpu: Provide cpuid_read() et al Thomas Gleixner
2023-07-24 17:44 ` [patch 13/29] x86/cpu: Provide cpu_init/parse_topology() Thomas Gleixner
2023-07-24 17:44 ` [patch 14/29] x86/cpu: Add legacy topology parser Thomas Gleixner
2023-07-24 17:44 ` [patch 15/29] x86/cpu: Use common topology code for Centaur and Zhaoxin Thomas Gleixner
2023-07-24 17:44 ` [patch 16/29] x86/cpu: Move __max_die_per_package to common.c Thomas Gleixner
2023-07-24 17:44 ` [patch 17/29] x86/cpu: Provide a sane leaf 0xb/0x1f parser Thomas Gleixner
2023-07-24 20:49 ` Peter Zijlstra
2023-07-24 21:02 ` Peter Zijlstra
2023-07-25 6:51 ` Thomas Gleixner
2023-07-24 17:44 ` [patch 18/29] x86/cpu: Use common topology code for Intel Thomas Gleixner
2023-07-24 17:44 ` [patch 19/29] x86/cpu/amd: Provide a separate acessor for Node ID Thomas Gleixner
2023-07-24 17:44 ` [patch 20/29] x86/cpu: Provide an AMD/HYGON specific topology parser Thomas Gleixner
2023-07-24 17:44 ` [patch 21/29] x86/smpboot: Teach it about topo.amd_node_id Thomas Gleixner
2023-07-24 17:44 ` [patch 22/29] x86/cpu: Use common topology code for AMD Thomas Gleixner
2023-07-24 17:44 ` [patch 23/29] x86/cpu: Use common topology code for HYGON Thomas Gleixner
2023-07-24 17:44 ` [patch 24/29] x86/mm/numa: Use core domain size on AMD Thomas Gleixner
2023-07-24 17:44 ` [patch 25/29] x86/cpu: Make topology_amd_node_id() use the actual node info Thomas Gleixner
2023-07-24 17:44 ` [patch 26/29] x86/cpu: Remove topology.c Thomas Gleixner
2023-07-24 17:44 ` [patch 27/29] x86/cpu: Remove x86_coreid_bits Thomas Gleixner
2023-07-24 17:44 ` [patch 28/29] x86/apic: Remove unused phys_pkg_id() callback Thomas Gleixner
2023-07-24 17:44 ` [patch 29/29] x86/apic/uv: Remove the private leaf 0xb parser Thomas Gleixner
2023-07-24 21:05 ` [patch 00/29] x86/cpu: Rework the topology evaluation Peter Zijlstra
2023-07-25 20:17 ` Dimitri Sivanich
2023-07-26 22:15 ` Sohil Mehta
2023-07-26 22:38 ` Thomas Gleixner
2023-07-26 23:27 ` Sohil Mehta
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