Commit d8ed9d48 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Ingo Molnar

x86/idt: Create file for IDT related code

IDT related code lives scattered around in various places. Create a new
source file in arch/x86/kernel/idt.c to hold it.

Move the idt_tables and descriptors to it for a start. Follow up patches
will gradually move more code over.
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20170828064958.367081121@linutronix.deSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 87cc0376
...@@ -42,7 +42,7 @@ CFLAGS_irq.o := -I$(src)/../include/asm/trace ...@@ -42,7 +42,7 @@ CFLAGS_irq.o := -I$(src)/../include/asm/trace
obj-y := process_$(BITS).o signal.o obj-y := process_$(BITS).o signal.o
obj-$(CONFIG_COMPAT) += signal_compat.o obj-$(CONFIG_COMPAT) += signal_compat.o
obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o obj-y += traps.o idt.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
obj-y += time.o ioport.o dumpstack.o nmi.o obj-y += time.o ioport.o dumpstack.o nmi.o
obj-$(CONFIG_MODIFY_LDT_SYSCALL) += ldt.o obj-$(CONFIG_MODIFY_LDT_SYSCALL) += ldt.o
obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o
......
...@@ -1289,15 +1289,6 @@ static __init int setup_disablecpuid(char *arg) ...@@ -1289,15 +1289,6 @@ static __init int setup_disablecpuid(char *arg)
__setup("clearcpuid=", setup_disablecpuid); __setup("clearcpuid=", setup_disablecpuid);
#ifdef CONFIG_X86_64 #ifdef CONFIG_X86_64
struct desc_ptr idt_descr __ro_after_init = {
.size = NR_VECTORS * 16 - 1,
.address = (unsigned long) idt_table,
};
const struct desc_ptr debug_idt_descr = {
.size = NR_VECTORS * 16 - 1,
.address = (unsigned long) debug_idt_table,
};
DEFINE_PER_CPU_FIRST(union irq_stack_union, DEFINE_PER_CPU_FIRST(union irq_stack_union,
irq_stack_union) __aligned(PAGE_SIZE) __visible; irq_stack_union) __aligned(PAGE_SIZE) __visible;
......
/*
* Interrupt descriptor table related code
*
* This file is licensed under the GPL V2
*/
#include <linux/interrupt.h>
#include <asm/desc.h>
/* Must be page-aligned because the real IDT is used in a fixmap. */
gate_desc idt_table[IDT_ENTRIES] __page_aligned_bss;
#ifdef CONFIG_X86_64
/* No need to be aligned, but done to keep all IDTs defined the same way. */
gate_desc debug_idt_table[IDT_ENTRIES] __page_aligned_bss;
struct desc_ptr idt_descr __ro_after_init = {
.size = IDT_ENTRIES * 16 - 1,
.address = (unsigned long) idt_table,
};
const struct desc_ptr debug_idt_descr = {
.size = IDT_ENTRIES * 16 - 1,
.address = (unsigned long) debug_idt_table,
};
#endif
...@@ -65,18 +65,12 @@ ...@@ -65,18 +65,12 @@
#include <asm/x86_init.h> #include <asm/x86_init.h>
#include <asm/pgalloc.h> #include <asm/pgalloc.h>
#include <asm/proto.h> #include <asm/proto.h>
/* No need to be aligned, but done to keep all IDTs defined the same way. */
gate_desc debug_idt_table[NR_VECTORS] __page_aligned_bss;
#else #else
#include <asm/processor-flags.h> #include <asm/processor-flags.h>
#include <asm/setup.h> #include <asm/setup.h>
#include <asm/proto.h> #include <asm/proto.h>
#endif #endif
/* Must be page-aligned because the real IDT is used in a fixmap. */
gate_desc idt_table[NR_VECTORS] __page_aligned_bss;
DECLARE_BITMAP(used_vectors, NR_VECTORS); DECLARE_BITMAP(used_vectors, NR_VECTORS);
static inline void cond_local_irq_enable(struct pt_regs *regs) static inline void cond_local_irq_enable(struct pt_regs *regs)
......
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