From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Steven Rostedt <rostedt@goodmis.org>,
Brian Gerst <brgerst@gmail.com>, Juergen Gross <jgross@suse.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Arnd Bergmann <arnd@arndb.de>
Subject: [patch 03/15] x86/entry: Add IRQENTRY_IRQ macro
Date: Tue, 25 Feb 2020 23:47:22 +0100 [thread overview]
Message-ID: <20200225231609.216265343@linutronix.de> (raw)
In-Reply-To: 20200225224719.950376311@linutronix.de
Provide a seperate IDTENTRY macro for device interrupts, which supports the
interrupt stack switch mode on 64 bit. Otherwise its the same as
IDTENTRY_ERRORCODE.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/include/asm/idtentry.h | 44 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -171,6 +171,46 @@ static __always_inline void __##func(str
unsigned long error_code, \
unsigned long address)
+/**
+ * DECLARE_IDTENTRY_IRQ - Declare functions for device interrupt IDT entry
+ * points (common/spurious)
+ * @vector: Vector number (ignored for C)
+ * @func: Function name of the entry point
+ *
+ * Declares three functions:
+ * - The ASM entry point: asm_##func
+ * - The XEN PV trap entry point: xen_##func (maybe unused)
+ * - The C handler called from the ASM entry point
+ */
+#define DECLARE_IDTENTRY_IRQ(vector, func) \
+ asmlinkage void asm_##func(void); \
+ asmlinkage void xen_asm_##func(void); \
+ __visible void func(struct pt_regs *regs, unsigned long vector)
+
+/**
+ * DEFINE_IDTENTRY_IRQ - Emit code for device interrupt IDT entry points
+ * @func: Function name of the entry point
+ *
+ * @func is called from ASM entry code with interrupts disabled.
+ *
+ * Used for C handlers which require the vector number.
+ */
+#define DEFINE_IDTENTRY_IRQ(func) \
+static __always_inline void __##func(struct pt_regs *regs, \
+ unsigned long vector); \
+ \
+__visible notrace __irq_entry void func(struct pt_regs *regs, \
+ unsigned long vector) \
+{ \
+ idtentry_enter(regs); \
+ __##func (regs, vector); \
+ idtentry_exit(regs); \
+} \
+NOKPROBE_SYMBOL(func); \
+ \
+static __always_inline void __##func(struct pt_regs *regs, \
+ unsigned long vector)
+
#ifdef CONFIG_X86_64
/**
* DECLARE_IDTENTRY_IST - Declare functions for IST handling IDT entry points
@@ -340,6 +380,10 @@ static __always_inline void __##func(str
/* Special case for 32bit IRET 'trap'. Do not emit ASM code */
#define DECLARE_IDTENTRY_SW(vector, func)
+/* Entries for common/spurious (device) interrupts */
+#define DECLARE_IDTENTRY_IRQ(vector, func) \
+ idtentry_irq vector func
+
#ifdef CONFIG_X86_64
# define DECLARE_IDTENTRY_MCE(vector, func) \
idtentry_mce_db vector asm_##func func
next prev parent reply other threads:[~2020-02-25 23:27 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-25 22:47 [patch 00/15] x86/entry: Consolidation - Part V Thomas Gleixner
2020-02-25 22:47 ` [patch 01/15] x86/irq: Convey vector as argument and not in ptregs Thomas Gleixner
2020-02-26 5:13 ` Andy Lutomirski
2020-02-26 5:45 ` Brian Gerst
2020-02-26 20:13 ` Thomas Gleixner
2020-02-26 21:35 ` Andy Lutomirski
2020-02-26 23:50 ` Thomas Gleixner
2020-02-26 21:54 ` Brian Gerst
2020-02-26 23:43 ` Thomas Gleixner
2020-02-27 0:04 ` Brian Gerst
2020-02-25 22:47 ` [patch 02/15] x86/entry/64: Add ability to switch to IRQ stacks in idtentry Thomas Gleixner
2020-02-25 22:47 ` Thomas Gleixner [this message]
2020-02-26 15:05 ` [patch 03/15] x86/entry: Add IRQENTRY_IRQ macro Miroslav Benes
2020-02-25 22:47 ` [patch 04/15] x86/entry: Use idtentry for interrupts Thomas Gleixner
2020-02-25 22:47 ` [patch 05/15] x86/entry: Provide IDTEnTRY_SYSVEC Thomas Gleixner
2020-02-26 6:10 ` Andy Lutomirski
2020-02-26 20:15 ` Thomas Gleixner
2020-02-25 22:47 ` [patch 06/15] x86/entry: Convert APIC interrupts to IDTENTRY_SYSVEC Thomas Gleixner
2020-02-25 22:47 ` [patch 07/15] x86/entry: Convert SMP system vectors " Thomas Gleixner
2020-02-25 22:47 ` [patch 08/15] x86/entry: Convert various system vectors Thomas Gleixner
2020-02-25 22:47 ` [patch 09/15] x86/entry: Convert KVM vectors to IDTENTRY_SYSVEC Thomas Gleixner
2020-02-26 10:54 ` Paolo Bonzini
2020-02-25 22:47 ` [patch 10/15] x86/entry: Convert various hypervisor " Thomas Gleixner
2020-02-25 22:47 ` [patch 11/15] x86/entry: Convert XEN hypercall vector " Thomas Gleixner
2020-02-25 22:47 ` [patch 12/15] x86/entry: Remove the apic/BUILD interrupt leftovers Thomas Gleixner
2020-02-25 22:47 ` [patch 13/15] x86/entry/32: Remove redundant irq disable code Thomas Gleixner
2020-02-25 22:47 ` [patch 14/15] x86/entry: Provide return_from exception() Thomas Gleixner
2020-02-25 22:47 ` [patch 15/15] x86/entry: Use return_from_exception() Thomas Gleixner
2020-02-26 9:53 ` [patch 00/15] x86/entry: Consolidation - Part V Peter Zijlstra
2020-02-26 10:02 ` Peter Zijlstra
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