[patch 08/15] x86/entry: Convert various system vectors

From: Thomas Gleixner
Date: Tue Feb 25 2020 - 18:28:10 EST

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Convert various system vectors to IDTENTRY_SYSVEC
- Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
- Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
- Remove the ASM idtentries in 64bit
- Remove the BUILD_INTERRUPT entries in 32bit
- Remove the old prototyoes

No functional change.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/entry/entry_64.S | 19 -------------------
arch/x86/include/asm/entry_arch.h | 25 -------------------------
arch/x86/include/asm/hw_irq.h | 8 --------
arch/x86/include/asm/idtentry.h | 20 ++++++++++++++++++++
arch/x86/include/asm/irq_work.h | 1 -
arch/x86/include/asm/traps.h | 5 -----
arch/x86/include/asm/uv/uv_bau.h | 6 +++---
arch/x86/kernel/cpu/mce/amd.c | 2 +-
arch/x86/kernel/cpu/mce/therm_throt.c | 2 +-
arch/x86/kernel/cpu/mce/threshold.c | 2 +-
arch/x86/kernel/idt.c | 24 ++++++++++++------------
arch/x86/kernel/irq_work.c | 3 ++-
arch/x86/platform/uv/tlb_uv.c | 2 +-
13 files changed, 41 insertions(+), 78 deletions(-)

--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -994,9 +994,6 @@ apicinterrupt3 \num \sym \do_sym
POP_SECTION_IRQENTRY
.endm

-#ifdef CONFIG_X86_UV
-apicinterrupt3 UV_BAU_MESSAGE uv_bau_message_intr1 uv_bau_message_interrupt
-#endif

#ifdef CONFIG_HAVE_KVM
apicinterrupt3 POSTED_INTR_VECTOR kvm_posted_intr_ipi smp_kvm_posted_intr_ipi
@@ -1004,22 +1001,6 @@ apicinterrupt3 POSTED_INTR_WAKEUP_VECTOR
apicinterrupt3 POSTED_INTR_NESTED_VECTOR kvm_posted_intr_nested_ipi smp_kvm_posted_intr_nested_ipi
#endif

-#ifdef CONFIG_X86_MCE_THRESHOLD
-apicinterrupt THRESHOLD_APIC_VECTOR threshold_interrupt smp_threshold_interrupt
-#endif
-
-#ifdef CONFIG_X86_MCE_AMD
-apicinterrupt DEFERRED_ERROR_VECTOR deferred_error_interrupt smp_deferred_error_interrupt
-#endif
-
-#ifdef CONFIG_X86_THERMAL_VECTOR
-apicinterrupt THERMAL_APIC_VECTOR thermal_interrupt smp_thermal_interrupt
-#endif
-
-#ifdef CONFIG_IRQ_WORK
-apicinterrupt IRQ_WORK_VECTOR irq_work_interrupt smp_irq_work_interrupt
-#endif
-
/*
* Reload gs selector with exception handling
* edi: new selector
--- a/arch/x86/include/asm/entry_arch.h
+++ b/arch/x86/include/asm/entry_arch.h
@@ -17,28 +17,3 @@ BUILD_INTERRUPT(kvm_posted_intr_wakeup_i
BUILD_INTERRUPT(kvm_posted_intr_nested_ipi, POSTED_INTR_NESTED_VECTOR)
#endif

-/*
- * every pentium local APIC has two 'local interrupts', with a
- * soft-definable vector attached to both interrupts, one of
- * which is a timer interrupt, the other one is error counter
- * overflow. Linux uses the local APIC timer interrupt to get
- * a much simpler SMP time architecture:
- */
-#ifdef CONFIG_X86_LOCAL_APIC
-
-#ifdef CONFIG_IRQ_WORK
-BUILD_INTERRUPT(irq_work_interrupt, IRQ_WORK_VECTOR)
-#endif
-
-#ifdef CONFIG_X86_THERMAL_VECTOR
-BUILD_INTERRUPT(thermal_interrupt,THERMAL_APIC_VECTOR)
-#endif
-
-#ifdef CONFIG_X86_MCE_THRESHOLD
-BUILD_INTERRUPT(threshold_interrupt,THRESHOLD_APIC_VECTOR)
-#endif
-
-#ifdef CONFIG_X86_MCE_AMD
-BUILD_INTERRUPT(deferred_error_interrupt, DEFERRED_ERROR_VECTOR)
-#endif
-#endif
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -32,14 +32,6 @@
extern asmlinkage void kvm_posted_intr_ipi(void);
extern asmlinkage void kvm_posted_intr_wakeup_ipi(void);
extern asmlinkage void kvm_posted_intr_nested_ipi(void);
-extern asmlinkage void irq_work_interrupt(void);
-extern asmlinkage void uv_bau_message_intr1(void);
-
-extern asmlinkage void spurious_apic_interrupt(void);
-extern asmlinkage void thermal_interrupt(void);
-
-extern asmlinkage void threshold_interrupt(void);
-extern asmlinkage void deferred_error_interrupt(void);

#ifdef CONFIG_X86_LOCAL_APIC
struct irq_data;
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -497,6 +497,26 @@ DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VE
DECLARE_IDTENTRY_SYSVEC(RESCHEDULE_VECTOR, sysvec_reschedule);
#endif

+#ifdef CONFIG_X86_UV
+DECLARE_IDTENTRY_SYSVEC(UV_BAU_MESSAGE, sysvec_uv_bau_message);
+#endif
+
+#ifdef CONFIG_X86_MCE_THRESHOLD
+DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold);
+#endif
+
+#ifdef CONFIG_X86_MCE_AMD
+DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error);
+#endif
+
+#ifdef CONFIG_X86_THERMAL_VECTOR
+DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal);
+#endif
+
+#ifdef CONFIG_IRQ_WORK
+DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work);
+#endif
+
#ifdef CONFIG_X86_MCE
/* Machine check */
DECLARE_IDTENTRY_MCE(X86_TRAP_MC, exc_machine_check);
--- a/arch/x86/include/asm/irq_work.h
+++ b/arch/x86/include/asm/irq_work.h
@@ -10,7 +10,6 @@ static inline bool arch_irq_work_has_int
return boot_cpu_has(X86_FEATURE_APIC);
}
extern void arch_irq_work_raise(void);
-extern __visible void smp_irq_work_interrupt(struct pt_regs *regs);
#else
static inline bool arch_irq_work_has_interrupt(void)
{
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -32,11 +32,6 @@ static inline int get_si_code(unsigned l
extern int panic_on_unrecovered_nmi;

void math_emulate(struct math_emu_info *);
-#ifndef CONFIG_X86_32
-asmlinkage void smp_thermal_interrupt(struct pt_regs *regs);
-asmlinkage void smp_threshold_interrupt(struct pt_regs *regs);
-asmlinkage void smp_deferred_error_interrupt(struct pt_regs *regs);
-#endif

extern void ist_enter(struct pt_regs *regs);
extern void ist_exit(struct pt_regs *regs);
--- a/arch/x86/include/asm/uv/uv_bau.h
+++ b/arch/x86/include/asm/uv/uv_bau.h
@@ -12,6 +12,8 @@
#define _ASM_X86_UV_UV_BAU_H

#include <linux/bitmap.h>
+#include <asm/idtentry.h>
+
#define BITSPERBYTE 8

/*
@@ -799,11 +801,9 @@ static inline void bau_cpubits_clear(str
bitmap_zero(&dstp->bits, nbits);
}

-extern void uv_bau_message_intr1(void);
#ifdef CONFIG_TRACING
-#define trace_uv_bau_message_intr1 uv_bau_message_intr1
+#define trace_uv_bau_message_intr1 sysvec_uv_bau_message
#endif
-extern void uv_bau_timeout_intr1(void);

struct atomic_short {
short counter;
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -907,7 +907,7 @@ static void __log_error(unsigned int ban
mce_log(&m);
}

-asmlinkage __visible void __irq_entry smp_deferred_error_interrupt(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC(sysvec_deferred_error)
{
entering_irq();
trace_deferred_error_apic_entry(DEFERRED_ERROR_VECTOR);
--- a/arch/x86/kernel/cpu/mce/therm_throt.c
+++ b/arch/x86/kernel/cpu/mce/therm_throt.c
@@ -609,7 +609,7 @@ static void unexpected_thermal_interrupt

static void (*smp_thermal_vector)(void) = unexpected_thermal_interrupt;

-asmlinkage __visible void __irq_entry smp_thermal_interrupt(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC(sysvec_thermal)
{
entering_irq();
trace_thermal_apic_entry(THERMAL_APIC_VECTOR);
--- a/arch/x86/kernel/cpu/mce/threshold.c
+++ b/arch/x86/kernel/cpu/mce/threshold.c
@@ -21,7 +21,7 @@ static void default_threshold_interrupt(

void (*mce_threshold_vector)(void) = default_threshold_interrupt;

-asmlinkage __visible void __irq_entry smp_threshold_interrupt(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC(sysvec_threshold)
{
entering_irq();
trace_threshold_apic_entry(THRESHOLD_APIC_VECTOR);
--- a/arch/x86/kernel/idt.c
+++ b/arch/x86/kernel/idt.c
@@ -117,33 +117,33 @@ static const __initconst struct idt_data
#endif

#ifdef CONFIG_X86_THERMAL_VECTOR
- INTG(THERMAL_APIC_VECTOR, thermal_interrupt),
+ INTG(THERMAL_APIC_VECTOR, asm_sysvec_thermal),
#endif

#ifdef CONFIG_X86_MCE_THRESHOLD
- INTG(THRESHOLD_APIC_VECTOR, threshold_interrupt),
+ INTG(THRESHOLD_APIC_VECTOR, asm_sysvec_threshold),
#endif

#ifdef CONFIG_X86_MCE_AMD
- INTG(DEFERRED_ERROR_VECTOR, deferred_error_interrupt),
+ INTG(DEFERRED_ERROR_VECTOR, asm_sysvec_deferred_error),
#endif

#ifdef CONFIG_X86_LOCAL_APIC
- INTG(LOCAL_TIMER_VECTOR, asm_sysvec_apic_timer_interrupt),
- INTG(X86_PLATFORM_IPI_VECTOR, asm_sysvec_x86_platform_ipi),
+ INTG(LOCAL_TIMER_VECTOR, asm_sysvec_apic_timer_interrupt),
+ INTG(X86_PLATFORM_IPI_VECTOR, asm_sysvec_x86_platform_ipi),
# ifdef CONFIG_HAVE_KVM
- INTG(POSTED_INTR_VECTOR, kvm_posted_intr_ipi),
- INTG(POSTED_INTR_WAKEUP_VECTOR, kvm_posted_intr_wakeup_ipi),
- INTG(POSTED_INTR_NESTED_VECTOR, kvm_posted_intr_nested_ipi),
+ INTG(POSTED_INTR_VECTOR, kvm_posted_intr_ipi),
+ INTG(POSTED_INTR_WAKEUP_VECTOR, kvm_posted_intr_wakeup_ipi),
+ INTG(POSTED_INTR_NESTED_VECTOR, kvm_posted_intr_nested_ipi),
# endif
# ifdef CONFIG_IRQ_WORK
- INTG(IRQ_WORK_VECTOR, irq_work_interrupt),
+ INTG(IRQ_WORK_VECTOR, asm_sysvec_irq_work),
# endif
#ifdef CONFIG_X86_UV
- INTG(UV_BAU_MESSAGE, uv_bau_message_intr1),
+ INTG(UV_BAU_MESSAGE, asm_sysvec_uv_bau_message),
#endif
- INTG(SPURIOUS_APIC_VECTOR, asm_sysvec_spurious_apic_interrupt),
- INTG(ERROR_APIC_VECTOR, asm_sysvec_error_interrupt),
+ INTG(SPURIOUS_APIC_VECTOR, asm_sysvec_spurious_apic_interrupt),
+ INTG(ERROR_APIC_VECTOR, asm_sysvec_error_interrupt),
#endif
};

--- a/arch/x86/kernel/irq_work.c
+++ b/arch/x86/kernel/irq_work.c
@@ -9,11 +9,12 @@
#include <linux/irq_work.h>
#include <linux/hardirq.h>
#include <asm/apic.h>
+#include <asm/idtentry.h>
#include <asm/trace/irq_vectors.h>
#include <linux/interrupt.h>

#ifdef CONFIG_X86_LOCAL_APIC
-__visible void __irq_entry smp_irq_work_interrupt(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC(sysvec_irq_work)
{
ipi_entering_ack_irq();
trace_irq_work_entry(IRQ_WORK_VECTOR);
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1272,7 +1272,7 @@ static void process_uv2_message(struct m
* (the resource will not be freed until noninterruptable cpus see this
* interrupt; hardware may timeout the s/w ack and reply ERROR)
*/
-void uv_bau_message_interrupt(struct pt_regs *regs)
+DEFINE_IDTENTRY_SYSVEC(sysvec_uv_bau_message)
{
int count = 0;
cycles_t time_start;

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Previous message: Thomas Gleixner: "[patch 13/15] x86/entry/32: Remove redundant irq disable code"
In reply to: Thomas Gleixner: "[patch 13/15] x86/entry/32: Remove redundant irq disable code"
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