From patchwork Mon Jul 24 13:35:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 125019 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:9010:0:b0:3e4:2afc:c1 with SMTP id l16csp1834721vqg; Mon, 24 Jul 2023 07:23:44 -0700 (PDT) X-Google-Smtp-Source: APBJJlESGfQaoc62mcnrOim3IhVW2BqgS6LYp8DrJ6pSlBkESfKFZE5I2jvMi6RjR0XWeOOP644b X-Received: by 2002:a17:90a:8a10:b0:268:237f:99ad with SMTP id w16-20020a17090a8a1000b00268237f99admr1104579pjn.27.1690208623911; Mon, 24 Jul 2023 07:23:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1690208623; cv=none; d=google.com; s=arc-20160816; b=fzACyGraxyXD4u9dGjacBgUpwbMg5RyrKhQYLwNICI7sjXO78HzUvnDaiBjqSQ8YPQ 3fPKFUgIZVpQh1MNhXFBUmEW0vyqnPzpgY3zos2lsUEIcdiwSsPpHGG3fXHKH+C9OaMd XHpsdk/IYCsUchHlKTBsa5OrzgY9Nj+IKXGxfXyq/8PlSW1PUOOir7ljrZo4L+74RUYb kQdvRvcFwvIiOvDYI3kDVygGwj7RGbLLef7LeWROIRhvV5OHY1bJb7sit/MpyTM1cu+B hHNcCQdnNnR2XEvYUx2aksNTQDTdaiF5k+OJCMwArWSe1xZiHoweCRjWkylrzdNJxtfO 5e4Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:date:mime-version:references:subject:cc:to:from :dkim-signature:dkim-signature:message-id; bh=/3PRh4Uq/w0/mm1OO+9nNoy3VWXLU/1yiwtVumBjbdg=; fh=mE3iieUIZLcDfOLIULj9X6/p0bMDPZGFSVRsnyRUnTc=; b=AQ328VLuI/wxVKGJxq+iI03bm1AzMePIjoyMx5heCR5sqtL1EkvkZZXrj8zKlDqwON /ddOd35AU/gHJ4nk0n9hcQNXIoGs4f68rpWpFxvN3mOPZVh9Hf3+1YFsq1KJSHXF0VJ1 WR0CPLSdUcKadz3F0yA62t6s+Nv7lkfUbHMMz4G2fSTS81h2PfXrpFQ6RcKgC/WZR8kp +roYvsmQowMFed1FasAy3od4lkrqc5tNqTyVliH4HXN3ixYfVRwpsBnBwXZwU2vQdwTk OAqX+TcoObbGq1JnwMVlv6k+2PKeOq2DRd1LLZ/ovD+YzWw9foLCZ+GGnFSODB+Q+ENI popw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=iqoFdzrp; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id a21-20020a63e855000000b0055bd8c2b3bdsi9482313pgk.153.2023.07.24.07.23.30; Mon, 24 Jul 2023 07:23:43 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=iqoFdzrp; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230349AbjGXNot (ORCPT + 99 others); Mon, 24 Jul 2023 09:44:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42278 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232242AbjGXNnb (ORCPT ); Mon, 24 Jul 2023 09:43:31 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50DE52D47 for ; Mon, 24 Jul 2023 06:41:41 -0700 (PDT) Message-ID: <20230724132047.437273933@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1690205707; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=/3PRh4Uq/w0/mm1OO+9nNoy3VWXLU/1yiwtVumBjbdg=; b=iqoFdzrptDL5+13a9vSi23w8jNKixvjOz81/Q5HzMFYUTDptVS2uxfF7L67V3fwdc/PlbI 3+hSwMevh8YzHecz7ANTicmMcxgDVBjG7nNZajggsJ72Qlmzs3catniBPWzEVnNfQAOYBU hpubOueRBU8iJeGS/21nr7FDpfjAwtJkIlTuANbCF6+gynK17jpRWtzAWsUS74H2LQWCU1 q3QnkTGExrsHyfVluyD9r8ZSqVMYaitkNRk0TUSYMJZnogRy8jLX1GDp5p+jUFbhZxUInP Jh1zmVx1gBiELNIxAjKANra7GDHdWfyhyv7U0d773WGomzdWmgf6l/MVZbrMig== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1690205707; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=/3PRh4Uq/w0/mm1OO+9nNoy3VWXLU/1yiwtVumBjbdg=; b=sPPuHYj0E3KXfDVdN2R+eoltumRNMpVgdzwAeSjGEupnt/PVx0lLDVh57g4sdeyBkh3Vp2 DgQWEtuJ4tOPM5DA== From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Andrew Cooper , Tom Lendacky , Paolo Bonzini , Wei Liu , Arjan van de Ven , Juergen Gross , Michael Kelley , Peter Keresztes Schmidt , "Peter Zijlstra (Intel)" Subject: [patch V2 48/58] x86/apic: Nuke ack_APIC_irq() References: <20230724131206.500814398@linutronix.de> MIME-Version: 1.0 Date: Mon, 24 Jul 2023 15:35:07 +0200 (CEST) X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1772312197864934538 X-GMAIL-MSGID: 1772312197864934538 Yet another wrapper of a wrapper gone along with the outdated comment that this compiles to a single instruction. Signed-off-by: Thomas Gleixner Reviewed-by: Wei Liu Acked-by: Peter Zijlstra (Intel) --- arch/x86/hyperv/hv_init.c | 2 +- arch/x86/include/asm/apic.h | 10 ---------- arch/x86/kernel/apic/apic.c | 10 +++++----- arch/x86/kernel/apic/io_apic.c | 4 ++-- arch/x86/kernel/apic/vector.c | 4 ++-- arch/x86/kernel/cpu/acrn.c | 2 +- arch/x86/kernel/cpu/mce/amd.c | 2 +- arch/x86/kernel/cpu/mce/threshold.c | 2 +- arch/x86/kernel/cpu/mshyperv.c | 4 ++-- arch/x86/kernel/irq.c | 14 +++++++------- arch/x86/kernel/irq_work.c | 2 +- arch/x86/kernel/kvm.c | 2 +- arch/x86/kernel/smp.c | 8 ++++---- arch/x86/xen/enlighten_hvm.c | 2 +- 14 files changed, 29 insertions(+), 39 deletions(-) --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -161,7 +161,7 @@ static inline bool hv_reenlightenment_av DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_reenlightenment) { - ack_APIC_irq(); + apic_eoi(); inc_irq_stat(irq_hv_reenlightenment_count); schedule_delayed_work(&hv_reenlightenment_work, HZ/10); } --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -402,16 +402,6 @@ static inline void apic_set_eoi(void (*e extern void apic_ack_irq(struct irq_data *data); -static inline void ack_APIC_irq(void) -{ - /* - * ack_APIC_irq() actually gets compiled as a single instruction - * ... yummie. - */ - apic_eoi(); -} - - static inline bool lapic_vector_set_in_irr(unsigned int vector) { u32 irr = apic_read(APIC_IRR + (vector / 32 * 0x10)); --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1076,7 +1076,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_apic_timer { struct pt_regs *old_regs = set_irq_regs(regs); - ack_APIC_irq(); + apic_eoi(); trace_local_timer_entry(LOCAL_TIMER_VECTOR); local_apic_timer_interrupt(); trace_local_timer_exit(LOCAL_TIMER_VECTOR); @@ -1480,7 +1480,7 @@ static bool apic_check_and_ack(union api * per set bit. */ for_each_set_bit(bit, isr->map, APIC_IR_BITS) - ack_APIC_irq(); + apic_eoi(); return true; } @@ -1492,7 +1492,7 @@ static bool apic_check_and_ack(union api * interrupt from previous kernel might still have ISR bit set. * * Most probably by now the CPU has serviced that pending interrupt and it - * might not have done the ack_APIC_irq() because it thought, interrupt + * might not have done the apic_eoi() because it thought, interrupt * came from i8259 as ExtInt. LAPIC did not get EOI so it does not clear * the ISR bit and cpu thinks it has already serviced the interrupt. Hence * a vector might get locked. It was noticed for timer irq (vector @@ -2146,7 +2146,7 @@ static noinline void handle_spurious_int if (v & (1 << (vector & 0x1f))) { pr_info("Spurious interrupt (vector 0x%02x) on CPU#%d. Acked\n", vector, smp_processor_id()); - ack_APIC_irq(); + apic_eoi(); } else { pr_info("Spurious interrupt (vector 0x%02x) on CPU#%d. Not pending!\n", vector, smp_processor_id()); @@ -2197,7 +2197,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_error_inte if (lapic_get_maxlvt() > 3) /* Due to the Pentium erratum 3AP. */ apic_write(APIC_ESR, 0); v = apic_read(APIC_ESR); - ack_APIC_irq(); + apic_eoi(); atomic_inc(&irq_err_count); apic_printk(APIC_DEBUG, KERN_DEBUG "APIC error on CPU%d: %02x", --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1823,7 +1823,7 @@ static void ioapic_ack_level(struct irq_ * We must acknowledge the irq before we move it or the acknowledge will * not propagate properly. */ - ack_APIC_irq(); + apic_eoi(); /* * Tail end of clearing remote IRR bit (either by delivering the EOI @@ -2046,7 +2046,7 @@ static void unmask_lapic_irq(struct irq_ static void ack_lapic_irq(struct irq_data *data) { - ack_APIC_irq(); + apic_eoi(); } static struct irq_chip lapic_chip __read_mostly = { --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -885,7 +885,7 @@ static int apic_retrigger_irq(struct irq void apic_ack_irq(struct irq_data *irqd) { irq_move_irq(irqd); - ack_APIC_irq(); + apic_eoi(); } void apic_ack_edge(struct irq_data *irqd) @@ -940,7 +940,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_irq_move_c struct apic_chip_data *apicd; struct hlist_node *tmp; - ack_APIC_irq(); + apic_eoi(); /* Prevent vectors vanishing under us */ raw_spin_lock(&vector_lock); --- a/arch/x86/kernel/cpu/acrn.c +++ b/arch/x86/kernel/cpu/acrn.c @@ -51,7 +51,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_acrn_hv_ca * will block the interrupt whose vector is lower than * HYPERVISOR_CALLBACK_VECTOR. */ - ack_APIC_irq(); + apic_eoi(); inc_irq_stat(irq_hv_callback_count); if (acrn_intr_handler) --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -759,7 +759,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_deferred_e inc_irq_stat(irq_deferred_error_count); deferred_error_int_vector(); trace_deferred_error_apic_exit(DEFERRED_ERROR_VECTOR); - ack_APIC_irq(); + apic_eoi(); } /* --- a/arch/x86/kernel/cpu/mce/threshold.c +++ b/arch/x86/kernel/cpu/mce/threshold.c @@ -27,5 +27,5 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_threshold) inc_irq_stat(irq_threshold_count); mce_threshold_vector(); trace_threshold_apic_exit(THRESHOLD_APIC_VECTOR); - ack_APIC_irq(); + apic_eoi(); } --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -119,7 +119,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_cal vmbus_handler(); if (ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED) - ack_APIC_irq(); + apic_eoi(); set_irq_regs(old_regs); } @@ -147,7 +147,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_sti if (hv_stimer0_handler) hv_stimer0_handler(); add_interrupt_randomness(HYPERV_STIMER0_VECTOR); - ack_APIC_irq(); + apic_eoi(); set_irq_regs(old_regs); } --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -49,7 +49,7 @@ void ack_bad_irq(unsigned int irq) * completely. * But only ack when the APIC is enabled -AK */ - ack_APIC_irq(); + apic_eoi(); } #define irq_stats(x) (&per_cpu(irq_stat, x)) @@ -256,7 +256,7 @@ DEFINE_IDTENTRY_IRQ(common_interrupt) if (likely(!IS_ERR_OR_NULL(desc))) { handle_irq(desc, regs); } else { - ack_APIC_irq(); + apic_eoi(); if (desc == VECTOR_UNUSED) { pr_emerg_ratelimited("%s: %d.%u No irq handler for vector\n", @@ -280,7 +280,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_x86_platfo { struct pt_regs *old_regs = set_irq_regs(regs); - ack_APIC_irq(); + apic_eoi(); trace_x86_platform_ipi_entry(X86_PLATFORM_IPI_VECTOR); inc_irq_stat(x86_platform_ipis); if (x86_platform_ipi_callback) @@ -310,7 +310,7 @@ EXPORT_SYMBOL_GPL(kvm_set_posted_intr_wa */ DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm_posted_intr_ipi) { - ack_APIC_irq(); + apic_eoi(); inc_irq_stat(kvm_posted_intr_ipis); } @@ -319,7 +319,7 @@ DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm */ DEFINE_IDTENTRY_SYSVEC(sysvec_kvm_posted_intr_wakeup_ipi) { - ack_APIC_irq(); + apic_eoi(); inc_irq_stat(kvm_posted_intr_wakeup_ipis); kvm_posted_intr_wakeup_handler(); } @@ -329,7 +329,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_kvm_posted */ DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm_posted_intr_nested_ipi) { - ack_APIC_irq(); + apic_eoi(); inc_irq_stat(kvm_posted_intr_nested_ipis); } #endif @@ -401,6 +401,6 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_thermal) inc_irq_stat(irq_thermal_count); smp_thermal_vector(); trace_thermal_apic_exit(THERMAL_APIC_VECTOR); - ack_APIC_irq(); + apic_eoi(); } #endif --- a/arch/x86/kernel/irq_work.c +++ b/arch/x86/kernel/irq_work.c @@ -16,7 +16,7 @@ #ifdef CONFIG_X86_LOCAL_APIC DEFINE_IDTENTRY_SYSVEC(sysvec_irq_work) { - ack_APIC_irq(); + apic_eoi(); trace_irq_work_entry(IRQ_WORK_VECTOR); inc_irq_stat(apic_irq_work_irqs); irq_work_run(); --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -291,7 +291,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_kvm_asyncp struct pt_regs *old_regs = set_irq_regs(regs); u32 token; - ack_APIC_irq(); + apic_eoi(); inc_irq_stat(irq_hv_callback_count); --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -135,7 +135,7 @@ static int smp_stop_nmi_callback(unsigne */ DEFINE_IDTENTRY_SYSVEC(sysvec_reboot) { - ack_APIC_irq(); + apic_eoi(); cpu_emergency_disable_virtualization(); stop_this_cpu(NULL); } @@ -268,7 +268,7 @@ static void native_stop_other_cpus(int w */ DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_reschedule_ipi) { - ack_APIC_irq(); + apic_eoi(); trace_reschedule_entry(RESCHEDULE_VECTOR); inc_irq_stat(irq_resched_count); scheduler_ipi(); @@ -277,7 +277,7 @@ DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_res DEFINE_IDTENTRY_SYSVEC(sysvec_call_function) { - ack_APIC_irq(); + apic_eoi(); trace_call_function_entry(CALL_FUNCTION_VECTOR); inc_irq_stat(irq_call_count); generic_smp_call_function_interrupt(); @@ -286,7 +286,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_call_funct DEFINE_IDTENTRY_SYSVEC(sysvec_call_function_single) { - ack_APIC_irq(); + apic_eoi(); trace_call_function_single_entry(CALL_FUNCTION_SINGLE_VECTOR); inc_irq_stat(irq_call_count); generic_smp_call_function_single_interrupt(); --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -132,7 +132,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_xen_hvm_ca struct pt_regs *old_regs = set_irq_regs(regs); if (xen_percpu_upcall) - ack_APIC_irq(); + apic_eoi(); inc_irq_stat(irq_hv_callback_count);