diff --git a/arch/x86/core/CMakeLists.txt b/arch/x86/core/CMakeLists.txt
index 9268dc4cf4d..e8055c6fae2 100644
--- a/arch/x86/core/CMakeLists.txt
+++ b/arch/x86/core/CMakeLists.txt
@@ -16,6 +16,7 @@ zephyr_library_sources_ifdef(CONFIG_REBOOT_RST_CNT reboot_rst_cnt.c)
 zephyr_library_sources_ifdef(CONFIG_MULTIBOOT_INFO multiboot.c)
 zephyr_library_sources_ifdef(CONFIG_X86_EFI efi.c)
 zephyr_library_sources_ifdef(CONFIG_ACPI legacy_bios.c)
+zephyr_library_sources_ifdef(CONFIG_ACPI x86_acpi.c)
 zephyr_library_sources_ifdef(CONFIG_X86_MMU x86_mmu.c)
 zephyr_library_sources_ifdef(CONFIG_USERSPACE userspace.c)
 zephyr_library_sources_ifdef(CONFIG_ARCH_CACHE cache.c)
diff --git a/arch/x86/core/x86_acpi.c b/arch/x86/core/x86_acpi.c
new file mode 100644
index 00000000000..badbd3b414f
--- /dev/null
+++ b/arch/x86/core/x86_acpi.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2023, Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <zephyr/acpi/acpi.h>
+#include <zephyr/dt-bindings/interrupt-controller/intel-ioapic.h>
+
+uint32_t arch_acpi_encode_irq_flags(uint8_t polarity, uint8_t trigger)
+{
+	uint32_t irq_flag = IRQ_DELIVERY_LOWEST;
+
+	if (trigger == ACPI_LEVEL_SENSITIVE) {
+		irq_flag |= IRQ_TYPE_LEVEL;
+	} else {
+		irq_flag |= IRQ_TYPE_EDGE;
+	}
+
+	if (polarity == ACPI_ACTIVE_HIGH) {
+		irq_flag |= IRQ_TYPE_HIGH;
+	} else if (polarity == ACPI_ACTIVE_LOW) {
+		irq_flag |= IRQ_TYPE_LOW;
+	}
+
+	return irq_flag;
+}
diff --git a/include/zephyr/arch/x86/arch_inlines.h b/include/zephyr/arch/x86/arch_inlines.h
index 4b255acc853..356e7920c66 100644
--- a/include/zephyr/arch/x86/arch_inlines.h
+++ b/include/zephyr/arch/x86/arch_inlines.h
@@ -10,6 +10,8 @@
 
 #ifndef _ASMLANGUAGE
 
+#include <zephyr/arch/x86/x86_acpi.h>
+
 #if defined(CONFIG_X86_64)
 
 #include <zephyr/arch/x86/intel64/thread.h>
diff --git a/include/zephyr/arch/x86/x86_acpi.h b/include/zephyr/arch/x86/x86_acpi.h
new file mode 100644
index 00000000000..013400e6fe6
--- /dev/null
+++ b/include/zephyr/arch/x86/x86_acpi.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2023, Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @brief Encode interrupt flag for x86 architecture.
+ *
+ * @param polarity the interrupt polarity received from ACPICA lib
+ * @param trigger the interrupt level received from ACPICA lib
+ * @return return encoded interrupt flag
+ */
+uint32_t arch_acpi_encode_irq_flags(uint8_t polarity, uint8_t trigger);