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x86/irq: Add and use NR_EXTERNAL_VECTORS and NR_SYSTEM_VECTORS

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Add defines for the number of external vectors and number of system
vectors instead of requiring the use of (FIRST_SYSTEM_VECTOR -
FIRST_EXTERNAL_VECTOR) and (NR_VECTORS - FIRST_SYSTEM_VECTOR)
respectively. Clean up the usage sites.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20210519212154.511983-3-hpa@zytor.com
This commit is contained in:
H. Peter Anvin (Intel) 2021-05-19 14:21:48 -07:00 committed by Thomas Gleixner
parent f1b7d45d3f
commit ff85100388
3 changed files with 8 additions and 2 deletions
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4
arch/x86/include/asm/idtentry.h
View File

@ -504,7 +504,7 @@ __visible noinstr void func(struct pt_regs *regs, \
.align 8
SYM_CODE_START(irq_entries_start)
vector=FIRST_EXTERNAL_VECTOR
.rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
.rept NR_EXTERNAL_VECTORS
UNWIND_HINT_IRET_REGS
0 :
.byte 0x6a, vector
@ -520,7 +520,7 @@ SYM_CODE_END(irq_entries_start)
.align 8
SYM_CODE_START(spurious_entries_start)
vector=FIRST_SYSTEM_VECTOR
.rept (NR_VECTORS - FIRST_SYSTEM_VECTOR)
.rept NR_SYSTEM_VECTORS
UNWIND_HINT_IRET_REGS
0 :
.byte 0x6a, vector

3
arch/x86/include/asm/irq_vectors.h
View File

@ -114,6 +114,9 @@
#define FIRST_SYSTEM_VECTOR NR_VECTORS
#endif
#define NR_EXTERNAL_VECTORS (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
#define NR_SYSTEM_VECTORS (NR_VECTORS - FIRST_SYSTEM_VECTOR)
/*
* Size the maximum number of interrupts.
*

3
tools/arch/x86/include/asm/irq_vectors.h
View File

@ -114,6 +114,9 @@
#define FIRST_SYSTEM_VECTOR NR_VECTORS
#endif
#define NR_EXTERNAL_VECTORS (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
#define NR_SYSTEM_VECTORS (NR_VECTORS - FIRST_SYSTEM_VECTOR)
/*
* Size the maximum number of interrupts.
*