2 files changed, 7 insertions, 7 deletions

diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h
index 4611f085cd43..3ab43df089cd 100644
--- a/arch/x86/include/asm/irq_vectors.h
+++ b/arch/x86/include/asm/irq_vectors.h
@@ -154,21 +154,21 @@ static inline int invalid_vm86_irq(int irq)
 
 #define NR_IRQS_LEGACY                    16
 
-#define CPU_VECTOR_LIMIT                (  8 * NR_CPUS      )
 #define IO_APIC_VECTOR_LIMIT            ( 32 * MAX_IO_APICS )
 
 #ifdef CONFIG_X86_IO_APIC
 # ifdef CONFIG_SPARSE_IRQ
+#  define CPU_VECTOR_LIMIT              (64 * NR_CPUS)
 #  define NR_IRQS                                       \
         (CPU_VECTOR_LIMIT > IO_APIC_VECTOR_LIMIT ?      \
                 (NR_VECTORS + CPU_VECTOR_LIMIT)  :      \
                 (NR_VECTORS + IO_APIC_VECTOR_LIMIT))
 # else
-#  if NR_CPUS < MAX_IO_APICS
-#   define NR_IRQS                      (NR_VECTORS + 4*CPU_VECTOR_LIMIT)
-#  else
-#   define NR_IRQS                      (NR_VECTORS + IO_APIC_VECTOR_LIMIT)
-#  endif
+#  define CPU_VECTOR_LIMIT              (32 * NR_CPUS)
+#  define NR_IRQS                                       \
+        (CPU_VECTOR_LIMIT < IO_APIC_VECTOR_LIMIT ?      \
+                (NR_VECTORS + CPU_VECTOR_LIMIT)  :      \
+                (NR_VECTORS + IO_APIC_VECTOR_LIMIT))
 # endif
 #else /* !CONFIG_X86_IO_APIC: */
 # define NR_IRQS                        NR_IRQS_LEGACY
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index de00c4619a55..d9cd1f1b9c07 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3840,7 +3840,7 @@ int __init arch_probe_nr_irqs(void)
         /*
          * for MSI and HT dyn irq
          */
-        nr += nr_irqs_gsi * 16;
+        nr += nr_irqs_gsi * 64;
 #endif
         if (nr < nr_irqs)
                 nr_irqs = nr;