From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16A4CC47247 for ; Tue, 5 May 2020 14:15:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EEAB6207DD for ; Tue, 5 May 2020 14:15:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729931AbgEEOPo (ORCPT ); Tue, 5 May 2020 10:15:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1729910AbgEEOPl (ORCPT ); Tue, 5 May 2020 10:15:41 -0400 Received: from Galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0157C061A0F for ; Tue, 5 May 2020 07:15:40 -0700 (PDT) Received: from p5de0bf0b.dip0.t-ipconnect.de ([93.224.191.11] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1jVyLy-0001cD-BB; Tue, 05 May 2020 16:15:22 +0200 Received: from nanos.tec.linutronix.de (localhost [IPv6:::1]) by nanos.tec.linutronix.de (Postfix) with ESMTP id CD341FFC8D; Tue, 5 May 2020 16:15:21 +0200 (CEST) Message-Id: <20200505134905.728077036@linutronix.de> User-Agent: quilt/0.65 Date: Tue, 05 May 2020 15:44:19 +0200 From: Thomas Gleixner To: LKML Cc: x86@kernel.org, "Paul E. McKenney" , Andy Lutomirski , Alexandre Chartre , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Josh Poimboeuf , Will Deacon Subject: [patch V4 part 3 25/29] x86/entry: Convert Spurious interrupt bug exception to IDTENTRY References: <20200505134354.774943181@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-transfer-encoding: 8-bit X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Gleixner Convert #SPURIOUS to IDTENTRY_ERRORCODE: - Implement the C entry point with DEFINE_IDTENTRY - Emit the ASM stub with DECLARE_IDTENTRY - Remove the ASM idtentry in 64bit - Remove the open coded ASM entry code in 32bit - Fixup the XEN/PV code - Remove the old prototyoes No functional change. Signed-off-by: Thomas Gleixner --- arch/x86/entry/entry_32.S | 7 ------- arch/x86/entry/entry_64.S | 1 - arch/x86/include/asm/idtentry.h | 1 + arch/x86/include/asm/traps.h | 3 --- arch/x86/kernel/idt.c | 2 +- arch/x86/kernel/traps.c | 3 +-- arch/x86/xen/enlighten_pv.c | 2 +- arch/x86/xen/xen-asm_64.S | 2 +- 8 files changed, 5 insertions(+), 16 deletions(-) --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -1333,13 +1333,6 @@ SYM_CODE_START(machine_check) SYM_CODE_END(machine_check) #endif -SYM_CODE_START(spurious_interrupt_bug) - ASM_CLAC - pushl $0 - pushl $do_spurious_interrupt_bug - jmp common_exception -SYM_CODE_END(spurious_interrupt_bug) - #ifdef CONFIG_XEN_PV SYM_FUNC_START(xen_hypervisor_callback) /* --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -1074,7 +1074,6 @@ apicinterrupt IRQ_WORK_VECTOR irq_work */ idtentry X86_TRAP_BP int3 do_int3 has_error_code=0 -idtentry X86_TRAP_SPURIOUS spurious_interrupt_bug do_spurious_interrupt_bug has_error_code=0 idtentry X86_TRAP_MF coprocessor_error do_coprocessor_error has_error_code=0 idtentry X86_TRAP_AC alignment_check do_alignment_check has_error_code=1 idtentry X86_TRAP_XF simd_coprocessor_error do_simd_coprocessor_error has_error_code=0 --- a/arch/x86/include/asm/idtentry.h +++ b/arch/x86/include/asm/idtentry.h @@ -129,6 +129,7 @@ DECLARE_IDTENTRY(X86_TRAP_BR, exc_bound DECLARE_IDTENTRY(X86_TRAP_UD, exc_invalid_op); DECLARE_IDTENTRY(X86_TRAP_NM, exc_device_not_available); DECLARE_IDTENTRY(X86_TRAP_OLD_MF, exc_coproc_segment_overrun); +DECLARE_IDTENTRY(X86_TRAP_SPURIOUS, exc_spurious_interrupt_bug); /* Simple exception entries with error code pushed by hardware */ DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_TS, exc_invalid_tss); --- a/arch/x86/include/asm/traps.h +++ b/arch/x86/include/asm/traps.h @@ -19,7 +19,6 @@ asmlinkage void double_fault(void); #endif asmlinkage void page_fault(void); asmlinkage void async_page_fault(void); -asmlinkage void spurious_interrupt_bug(void); asmlinkage void coprocessor_error(void); asmlinkage void alignment_check(void); #ifdef CONFIG_X86_MCE @@ -33,7 +32,6 @@ asmlinkage void xen_xendebug(void); asmlinkage void xen_int3(void); asmlinkage void xen_double_fault(void); asmlinkage void xen_page_fault(void); -asmlinkage void xen_spurious_interrupt_bug(void); asmlinkage void xen_coprocessor_error(void); asmlinkage void xen_alignment_check(void); #ifdef CONFIG_X86_MCE @@ -49,7 +47,6 @@ dotraplinkage void do_int3(struct pt_reg dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code, unsigned long cr2); #endif dotraplinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address); -dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *regs, long error_code); dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code); dotraplinkage void do_alignment_check(struct pt_regs *regs, long error_code); dotraplinkage void do_simd_coprocessor_error(struct pt_regs *regs, long error_code); --- a/arch/x86/kernel/idt.c +++ b/arch/x86/kernel/idt.c @@ -80,7 +80,7 @@ static const __initconst struct idt_data INTG(X86_TRAP_NP, asm_exc_segment_not_present), INTG(X86_TRAP_SS, asm_exc_stack_segment), INTG(X86_TRAP_GP, asm_exc_general_protection), - INTG(X86_TRAP_SPURIOUS, spurious_interrupt_bug), + INTG(X86_TRAP_SPURIOUS, asm_exc_spurious_interrupt_bug), INTG(X86_TRAP_MF, coprocessor_error), INTG(X86_TRAP_AC, alignment_check), INTG(X86_TRAP_XF, simd_coprocessor_error), --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -859,8 +859,7 @@ do_simd_coprocessor_error(struct pt_regs math_error(regs, error_code, X86_TRAP_XF); } -dotraplinkage void -do_spurious_interrupt_bug(struct pt_regs *regs, long error_code) +DEFINE_IDTENTRY(exc_spurious_interrupt_bug) { /* * This addresses a Pentium Pro Erratum: --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -632,7 +632,7 @@ static struct trap_array_entry trap_arra TRAP_ENTRY(exc_segment_not_present, false ), TRAP_ENTRY(exc_stack_segment, false ), TRAP_ENTRY(exc_general_protection, false ), - { spurious_interrupt_bug, xen_spurious_interrupt_bug, false }, + TRAP_ENTRY(exc_spurious_interrupt_bug, false ), { coprocessor_error, xen_coprocessor_error, false }, { alignment_check, xen_alignment_check, false }, { simd_coprocessor_error, xen_simd_coprocessor_error, false }, --- a/arch/x86/xen/xen-asm_64.S +++ b/arch/x86/xen/xen-asm_64.S @@ -44,7 +44,7 @@ xen_pv_trap asm_exc_segment_not_present xen_pv_trap asm_exc_stack_segment xen_pv_trap asm_exc_general_protection xen_pv_trap page_fault -xen_pv_trap spurious_interrupt_bug +xen_pv_trap asm_exc_spurious_interrupt_bug xen_pv_trap coprocessor_error xen_pv_trap alignment_check #ifdef CONFIG_X86_MCE