From nobody Sun Feb 8 18:14:07 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD66AC04A6A for ; Wed, 9 Aug 2023 15:34:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234387AbjHIPeb (ORCPT ); Wed, 9 Aug 2023 11:34:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233612AbjHIPeQ (ORCPT ); Wed, 9 Aug 2023 11:34:16 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51A4A1FEF; Wed, 9 Aug 2023 08:34:16 -0700 (PDT) Date: Wed, 09 Aug 2023 15:34:14 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1691595255; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=b3vNKmw56FU15T9NY5n50SyYRbcYGKFHcGc4Ez4sTQY=; b=JeJ3Eyt1axyVGdOfZmgWo0o0HXsOlTjtClRnIngOolPiM+BFYPkYp3ELm8bD1SXoGm0sMl 7sIC2ibBnfFT/K4IGN8AUR+xrmEfeX0QpWtNIx4aQIbjAajuVwFvZoacqnx+/UcYP3/5Mt JyaPLhGyEldbsgxjp2vBd2eRK2y5+f7bUHAQZutRlZre81WP30/WgN4cJdmHSAXXzcBnc9 vCuiB6sAnOwxyPmBD8lWBi74mYF9cqFpxeK/w1RCDWxFzjB3CWe9FA0Vooa/OrhQY7/8PA XeDiG5i5AqNt/TJ/JqWCDDHn4r4b91NbTopY64Pwbs0SrdwZAfNdBXCHdE88jQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1691595255; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=b3vNKmw56FU15T9NY5n50SyYRbcYGKFHcGc4Ez4sTQY=; b=ODZXVQ/0JzKQKraWWE2xGzNeMRP1hk8ENh5+ca7s5Akaxk9NYo9Mkx+SVxMsyOFlBgaDvK RcW7qhNV+G1z7tDw== From: "tip-bot2 for Thomas Gleixner" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/apic] x86/apic: Split register_apic_address() Cc: Thomas Gleixner , Dave Hansen , "Peter Zijlstra (Intel)" , x86@kernel.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Message-ID: <169159525448.27769.13238318626262028013.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/apic branch of tip: Commit-ID: 90815d75ec85919de391dd982b5c866dc67b8758 Gitweb: https://git.kernel.org/tip/90815d75ec85919de391dd982b5c866dc= 67b8758 Author: Thomas Gleixner AuthorDate: Tue, 08 Aug 2023 15:03:48 -07:00 Committer: Dave Hansen CommitterDate: Wed, 09 Aug 2023 08:10:11 -07:00 x86/apic: Split register_apic_address() Split the fixmap setup out of register_lapic_address() and reuse it when the X2APIC is disabled during setup. This avoids registering the APIC ID (setting 'mp_lapic_addr') twice. [ dhansen: changelog wording tweak ] Signed-off-by: Thomas Gleixner Signed-off-by: Dave Hansen Acked-by: Peter Zijlstra (Intel) --- arch/x86/kernel/apic/apic.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index d0f4cca..45ae178 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1852,6 +1852,8 @@ void x2apic_setup(void) __x2apic_enable(); } =20 +static __init void apic_set_fixmap(void); + static __init void x2apic_disable(void) { u32 x2apic_id, state =3D x2apic_state; @@ -1872,7 +1874,7 @@ static __init void x2apic_disable(void) } =20 __x2apic_disable(); - register_lapic_address(mp_lapic_addr); + apic_set_fixmap(); } =20 static __init void x2apic_enable(void) @@ -2145,17 +2147,21 @@ void __init init_apic_mappings(void) } } =20 +static __init void apic_set_fixmap(void) +{ + set_fixmap_nocache(FIX_APIC_BASE, mp_lapic_addr); + apic_mmio_base =3D APIC_BASE; + apic_printk(APIC_VERBOSE, "mapped APIC to %16lx (%16lx)\n", + apic_mmio_base, mp_lapic_addr); + apic_read_boot_cpu_id(false); +} + void __init register_lapic_address(unsigned long address) { mp_lapic_addr =3D address; =20 - if (x2apic_mode) - return; - - set_fixmap_nocache(FIX_APIC_BASE, address); - apic_mmio_base =3D APIC_BASE; - apic_printk(APIC_VERBOSE, "mapped APIC to %16lx (%16lx)\n", APIC_BASE, ad= dress); - apic_read_boot_cpu_id(false); + if (!x2apic_mode) + apic_set_fixmap(); } =20 /*