diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/desc.h | 22 | ||||
| -rw-r--r-- | include/asm-x86/irq_vectors.h | 2 |
2 files changed, 22 insertions, 2 deletions
diff --git a/include/asm-x86/desc.h b/include/asm-x86/desc.h index 268a012bcd7..b3875d4b4fa 100644 --- a/include/asm-x86/desc.h +++ b/include/asm-x86/desc.h @@ -311,6 +311,28 @@ static inline void set_intr_gate(unsigned int n, void *addr) _set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS); } +#define SYS_VECTOR_FREE 0 +#define SYS_VECTOR_ALLOCED 1 + +extern int first_system_vector; +extern char system_vectors[]; + +static inline void alloc_system_vector(int vector) +{ + if (system_vectors[vector] == SYS_VECTOR_FREE) { + system_vectors[vector] = SYS_VECTOR_ALLOCED; + if (first_system_vector > vector) + first_system_vector = vector; + } else + BUG(); +} + +static inline void alloc_intr_gate(unsigned int n, void *addr) +{ + alloc_system_vector(n); + set_intr_gate(n, addr); +} + /* * This routine sets up an interrupt gate at directory privilege level 3. */ diff --git a/include/asm-x86/irq_vectors.h b/include/asm-x86/irq_vectors.h index daceaaf0a3a..3cb6d8c77b3 100644 --- a/include/asm-x86/irq_vectors.h +++ b/include/asm-x86/irq_vectors.h @@ -96,8 +96,6 @@ # define FIRST_DEVICE_VECTOR (IRQ15_VECTOR + 2) #endif -#define FIRST_SYSTEM_VECTOR 0xef - #define NR_VECTORS 256 #define FPU_IRQ 13 |