diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/cpu/x86/lapic.h | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/src/include/cpu/x86/lapic.h b/src/include/cpu/x86/lapic.h index 4fbae88ca5..05d096e318 100644 --- a/src/include/cpu/x86/lapic.h +++ b/src/include/cpu/x86/lapic.h @@ -18,21 +18,10 @@ static __always_inline void xapic_write(unsigned int reg, uint32_t v) write32((volatile void *)(uintptr_t)(LAPIC_DEFAULT_BASE + reg), v); } -static inline void xapic_write_atomic(unsigned long reg, uint32_t v) -{ - volatile uint32_t *ptr; - - ptr = (volatile uint32_t *)(LAPIC_DEFAULT_BASE + reg); - - asm volatile ("xchgl %0, %1\n" - : "+r" (v), "+m" (*(ptr)) - : : "memory", "cc"); -} - static __always_inline void xapic_send_ipi(uint32_t icrlow, uint32_t apicid) { - xapic_write_atomic(LAPIC_ICR2, SET_LAPIC_DEST_FIELD(apicid)); - xapic_write_atomic(LAPIC_ICR, icrlow); + xapic_write(LAPIC_ICR2, SET_LAPIC_DEST_FIELD(apicid)); + xapic_write(LAPIC_ICR, icrlow); } static __always_inline int xapic_busy(void) @@ -114,7 +103,7 @@ static __always_inline void lapic_update32(unsigned int reg, uint32_t mask, uint value = xapic_read(reg); value &= mask; value |= or; - xapic_write_atomic(reg, value); + xapic_write(reg, value); } } |