From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>, Peter Anvin <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
Steven Rostedt <rostedt@goodmis.org>
Subject: [patch V2 28/44] x86/idt: Create file for IDT related code
Date: Fri, 25 Aug 2017 23:47:16 +0200 [thread overview]
Message-ID: <20170825214942.440110255@linutronix.de> (raw)
In-Reply-To: 20170825214648.264521964@linutronix.de
[-- Attachment #1: x86-idt--Create-file-for-idt-related-code.patch --]
[-- Type: text/plain, Size: 2924 bytes --]
IDT related code lives in different places. Create a new source file 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: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/Makefile | 2 +-
arch/x86/kernel/cpu/common.c | 9 ---------
arch/x86/kernel/idt.c | 26 ++++++++++++++++++++++++++
arch/x86/kernel/traps.c | 6 ------
4 files changed, 27 insertions(+), 16 deletions(-)
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -42,7 +42,7 @@ CFLAGS_irq.o := -I$(src)/../include/asm/
obj-y := process_$(BITS).o signal.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_$(BITS).o
obj-y += time.o ioport.o dumpstack.o nmi.o
obj-$(CONFIG_MODIFY_LDT_SYSCALL) += ldt.o
obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1289,15 +1289,6 @@ static __init int setup_disablecpuid(cha
__setup("clearcpuid=", setup_disablecpuid);
#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,
irq_stack_union) __aligned(PAGE_SIZE) __visible;
--- /dev/null
+++ b/arch/x86/kernel/idt.c
@@ -0,0 +1,26 @@
+/*
+ * 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
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -65,18 +65,12 @@
#include <asm/x86_init.h>
#include <asm/pgalloc.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
#include <asm/processor-flags.h>
#include <asm/setup.h>
#include <asm/proto.h>
#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);
static inline void cond_local_irq_enable(struct pt_regs *regs)
next prev parent reply other threads:[~2017-08-25 22:04 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-25 21:46 [patch V2 00/44] x86: Cleanup IDT code Thomas Gleixner
2017-08-25 21:46 ` [patch V2 01/44] x86/irq: Remove vector_used_by_percpu_irq() Thomas Gleixner
2017-08-25 21:46 ` [patch V2 02/44] x86/irq: Unexport used_vectors Thomas Gleixner
2017-08-25 21:46 ` [patch V2 03/44] x86/irq: Get rid of the first_system_vector bogisity Thomas Gleixner
2017-08-25 21:46 ` [patch V2 04/44] x86/irq: Remove duplicated used_vectors definition Thomas Gleixner
2017-08-25 21:46 ` [patch V2 05/44] x86/boot: Move EISA setup to a proper place Thomas Gleixner
2017-08-25 21:46 ` [patch V2 06/44] x86/tracing: Introduce a static key for exception tracing Thomas Gleixner
2017-08-25 21:46 ` [patch V2 07/44] x86/traps: Simplify pagefault tracing logic Thomas Gleixner
2017-08-25 21:46 ` [patch V2 08/44] x86/apic: Remove the duplicated tracing version of local_timer_interrupt Thomas Gleixner
2017-08-25 21:46 ` [patch V2 09/44] x86/apic: Use this_cpu_ptr in local_timer_interrupt Thomas Gleixner
2017-08-25 21:46 ` [patch V2 10/44] x86/irq: Get rid of duplicated trace_x86_platform_ipi() code Thomas Gleixner
2017-08-25 21:46 ` [patch V2 11/44] x86/apic: Remove the duplicated tracing versions of interrupts Thomas Gleixner
2017-08-25 21:47 ` [patch V2 12/44] x86/irqwork: Get rid of duplicated tracing interrupt code Thomas Gleixner
2017-08-25 21:47 ` [patch V2 13/44] x86/mce: Remove " Thomas Gleixner
2017-08-25 21:47 ` [patch V2 14/44] x86/smp: Remove pointless duplicated " Thomas Gleixner
2017-08-25 21:47 ` [patch V2 15/44] x86/smp: Use static key for reschedule interrupt tracing Thomas Gleixner
2017-08-25 21:47 ` [patch V2 16/44] x86/idt: Remove tracing idt completely Thomas Gleixner
2017-08-25 21:47 ` [patch V2 17/44] x86/idt: Cleanup the i386 low level entry macros Thomas Gleixner
2017-08-25 21:47 ` [patch V2 18/44] x86/tracing: Disentangle pagefault and resched IPI tracing key Thomas Gleixner
2017-08-25 21:47 ` [patch V2 19/44] x86/ipi: Make platform IPI depend on APIC Thomas Gleixner
2017-08-25 21:47 ` [patch V2 20/44] x86/irq_work: Make it " Thomas Gleixner
2017-08-25 21:47 ` [patch V2 21/44] x86/tracing: Build tracepoints only when they are used Thomas Gleixner
2017-08-25 21:47 ` [patch V2 22/44] x86/idt: Unify gate_struct handling for 32/64bit Thomas Gleixner
2017-08-25 21:47 ` [patch V2 23/44] x86/percpu: Use static initializer for GDT entry Thomas Gleixner
2017-08-25 21:47 ` [patch V2 24/44] x86/fpu: Use bitfield accessors for desc_struct Thomas Gleixner
2017-08-25 21:47 ` [patch V2 25/44] x86: Replace access to desc_struct:a/b fields Thomas Gleixner
2017-08-26 2:16 ` Boris Ostrovsky
2017-08-25 21:47 ` [patch V2 26/44] x86/gdt: Use bitfields for initialization Thomas Gleixner
2017-08-25 21:47 ` [patch V2 27/44] x86/ldttss: Cleanup 32bit descriptors Thomas Gleixner
2017-08-25 21:47 ` Thomas Gleixner [this message]
2017-08-25 21:47 ` [patch V2 29/44] x86/idt: Move 32bit idt_descr to C code Thomas Gleixner
2017-08-25 21:47 ` [patch V2 30/44] x86/idt: Remove unused set_trap_gate() Thomas Gleixner
2017-08-25 21:47 ` [patch V2 31/44] x86/idt: Consolidate IDT invalidation Thomas Gleixner
2017-08-25 21:47 ` [patch V2 32/44] x86/idt: Move early IDT handler setup to IDT code Thomas Gleixner
2017-08-25 21:47 ` [patch V2 33/44] x86/idt: Move early IDT setup out of 32bit asm Thomas Gleixner
2017-08-25 21:47 ` [patch V2 34/44] x86/idt: Prepare for table based init Thomas Gleixner
2017-08-25 21:47 ` [patch V2 35/44] x86/idt: Switch early trap init to IDT tables Thomas Gleixner
2017-08-26 2:24 ` Boris Ostrovsky
2017-08-26 8:16 ` Thomas Gleixner
2017-08-26 10:59 ` Juergen Gross
2017-08-26 13:05 ` Thomas Gleixner
2017-08-26 15:07 ` Boris Ostrovsky
2017-08-25 21:47 ` [patch V2 36/44] x86/idt: Move debug stack init to table based Thomas Gleixner
2017-08-25 21:47 ` [patch V2 37/44] x86/idt: Move ist stack based traps to table init Thomas Gleixner
2017-08-25 21:47 ` [patch V2 38/44] x86/idt: Move regular trap init to tables Thomas Gleixner
2017-08-25 21:47 ` [patch V2 39/44] x86/idt: Move APIC gate initialization " Thomas Gleixner
2017-08-25 21:47 ` [patch V2 40/44] x86/idt: Move interrupt gate initialization to IDT code Thomas Gleixner
2017-08-25 21:47 ` [patch V2 41/44] x86/idt: Remove unused functions/inlines Thomas Gleixner
2017-08-25 21:47 ` [patch V2 42/44] x86/idt: Deinline setup functions Thomas Gleixner
2017-08-25 21:47 ` [patch V2 43/44] x86/idt: Simplify alloc_intr_gate Thomas Gleixner
2017-08-25 21:47 ` [patch V2 44/44] x86/idt: Hide set_intr_gate() Thomas Gleixner
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