Merge tag 'x86-irq-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 irq updates from Thomas Gleixner:
 "Surgery of the MSI interrupt handling to prepare the support of
  upcoming devices which require non-PCI based MSI handling:

   - Cleanup historical leftovers all over the place

   - Rework the code to utilize more core functionality

   - Wrap XEN PCI/MSI interrupts into an irqdomain to make irqdomain
     assignment to PCI devices possible.

   - Assign irqdomains to PCI devices at initialization time which
     allows to utilize the full functionality of hierarchical
     irqdomains.

   - Remove arch_.*_msi_irq() functions from X86 and utilize the
     irqdomain which is assigned to the device for interrupt management.

   - Make the arch_.*_msi_irq() support conditional on a config switch
     and let the last few users select it"

* tag 'x86-irq-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  PCI: MSI: Fix Kconfig dependencies for PCI_MSI_ARCH_FALLBACKS
  x86/apic/msi: Unbreak DMAR and HPET MSI
  iommu/amd: Remove domain search for PCI/MSI
  iommu/vt-d: Remove domain search for PCI/MSI[X]
  x86/irq: Make most MSI ops XEN private
  x86/irq: Cleanup the arch_*_msi_irqs() leftovers
  PCI/MSI: Make arch_.*_msi_irq[s] fallbacks selectable
  x86/pci: Set default irq domain in pcibios_add_device()
  iommm/amd: Store irq domain in struct device
  iommm/vt-d: Store irq domain in struct device
  x86/xen: Wrap XEN MSI management into irqdomain
  irqdomain/msi: Allow to override msi_domain_alloc/free_irqs()
  x86/xen: Consolidate XEN-MSI init
  x86/xen: Rework MSI teardown
  x86/xen: Make xen_msi_init() static and rename it to xen_hvm_msi_init()
  PCI/MSI: Provide pci_dev_has_special_msi_domain() helper
  PCI_vmd_Mark_VMD_irqdomain_with_DOMAIN_BUS_VMD_MSI
  irqdomain/msi: Provide DOMAIN_BUS_VMD_MSI
  x86/irq: Initialize PCI/MSI domain at PCI init time
  x86/pci: Reducde #ifdeffery in PCI init code
  ...

44 files changed, 597 insertions, 523 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 5b4ec80bf586..9d0f1e13c918 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -56,6 +56,7 @@ config IA64
 	select NEED_DMA_MAP_STATE
 	select NEED_SG_DMA_LENGTH
 	select NUMA if !FLATMEM
+	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
 	default y
 	help
 	  The Itanium Processor Family is Intel's 64-bit successor to
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8f328298f8cc..cff19225da3d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -86,6 +86,7 @@ config MIPS
 	select MODULES_USE_ELF_REL if MODULES
 	select MODULES_USE_ELF_RELA if MODULES && 64BIT
 	select PERF_USE_VMALLOC
+	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
 	select RTC_LIB
 	select SYSCTL_EXCEPTION_TRACE
 	select VIRT_TO_BUS
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 4a02cab105fd..592036103493 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -245,6 +245,7 @@ config PPC
 	select OLD_SIGACTION			if PPC32
 	select OLD_SIGSUSPEND
 	select PCI_DOMAINS			if PCI
+	select PCI_MSI_ARCH_FALLBACKS		if PCI_MSI
 	select PCI_SYSCALL			if PCI
 	select PPC_DAWR				if PPC64
 	select RTC_LIB
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index b29fcc66ec39..0a3899386a51 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -185,6 +185,7 @@ config S390
 	select OLD_SIGSUSPEND3
 	select PCI_DOMAINS		if PCI
 	select PCI_MSI			if PCI
+	select PCI_MSI_ARCH_FALLBACKS	if PCI_MSI
 	select SPARSE_IRQ
 	select SYSCTL_EXCEPTION_TRACE
 	select THREAD_INFO_IN_TASK
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index efeff2c896a5..91ed1104b7f4 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -43,6 +43,7 @@ config SPARC
 	select GENERIC_STRNLEN_USER
 	select MODULES_USE_ELF_RELA
 	select PCI_SYSCALL if PCI
+	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
 	select ODD_RT_SIGACTION
 	select OLD_SIGSUSPEND
 	select CPU_NO_EFFICIENT_FFS
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 2cc44e957c31..1c129abb7f09 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -519,6 +519,14 @@ static inline bool apic_id_is_primary_thread(unsigned int id) { return false; }
 static inline void apic_smt_update(void) { }
 #endif
 
+struct msi_msg;
+
+#ifdef CONFIG_PCI_MSI
+void x86_vector_msi_compose_msg(struct irq_data *data, struct msi_msg *msg);
+#else
+# define x86_vector_msi_compose_msg NULL
+#endif
+
 extern void ioapic_zap_locks(void);
 
 #endif /* _ASM_X86_APIC_H */
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 74c12437401e..a4aeeaace040 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -36,61 +36,56 @@ struct msi_desc;
 enum irq_alloc_type {
 	X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
 	X86_IRQ_ALLOC_TYPE_HPET,
-	X86_IRQ_ALLOC_TYPE_MSI,
-	X86_IRQ_ALLOC_TYPE_MSIX,
+	X86_IRQ_ALLOC_TYPE_PCI_MSI,
+	X86_IRQ_ALLOC_TYPE_PCI_MSIX,
 	X86_IRQ_ALLOC_TYPE_DMAR,
 	X86_IRQ_ALLOC_TYPE_UV,
+	X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT,
+	X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT,
 };
 
+struct ioapic_alloc_info {
+	int				pin;
+	int				node;
+	u32				trigger : 1;
+	u32				polarity : 1;
+	u32				valid : 1;
+	struct IO_APIC_route_entry	*entry;
+};
+
+struct uv_alloc_info {
+	int		limit;
+	int		blade;
+	unsigned long	offset;
+	char		*name;
+
+};
+
+/**
+ * irq_alloc_info - X86 specific interrupt allocation info
+ * @type:	X86 specific allocation type
+ * @flags:	Flags for allocation tweaks
+ * @devid:	Device ID for allocations
+ * @hwirq:	Associated hw interrupt number in the domain
+ * @mask:	CPU mask for vector allocation
+ * @desc:	Pointer to msi descriptor
+ * @data:	Allocation specific data
+ *
+ * @ioapic:	IOAPIC specific allocation data
+ * @uv:		UV specific allocation data
+*/
 struct irq_alloc_info {
 	enum irq_alloc_type	type;
 	u32			flags;
-	const struct cpumask	*mask;	/* CPU mask for vector allocation */
+	u32			devid;
+	irq_hw_number_t		hwirq;
+	const struct cpumask	*mask;
+	struct msi_desc		*desc;
+	void			*data;
+
 	union {
-		int		unused;
-#ifdef	CONFIG_HPET_TIMER
-		struct {
-			int		hpet_id;
-			int		hpet_index;
-			void		*hpet_data;
-		};
-#endif
-#ifdef	CONFIG_PCI_MSI
-		struct {
-			struct pci_dev	*msi_dev;
-			irq_hw_number_t	msi_hwirq;
-		};
-#endif
-#ifdef	CONFIG_X86_IO_APIC
-		struct {
-			int		ioapic_id;
-			int		ioapic_pin;
-			int		ioapic_node;
-			u32		ioapic_trigger : 1;
-			u32		ioapic_polarity : 1;
-			u32		ioapic_valid : 1;
-			struct IO_APIC_route_entry *ioapic_entry;
-		};
-#endif
-#ifdef	CONFIG_DMAR_TABLE
-		struct {
-			int		dmar_id;
-			void		*dmar_data;
-		};
-#endif
-#ifdef	CONFIG_X86_UV
-		struct {
-			int		uv_limit;
-			int		uv_blade;
-			unsigned long	uv_offset;
-			char		*uv_name;
-		};
-#endif
-#if IS_ENABLED(CONFIG_VMD)
-		struct {
-			struct msi_desc *desc;
-		};
-#endif
+		struct ioapic_alloc_info	ioapic;
+		struct uv_alloc_info		uv;
 	};
 };
 
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 4bc985f1e2e4..af4a151d70b3 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -45,8 +45,6 @@ extern int irq_remap_enable_fault_handling(void);
 extern void panic_if_irq_remap(const char *msg);
 
 extern struct irq_domain *
-irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info);
-extern struct irq_domain *
 irq_remapping_get_irq_domain(struct irq_alloc_info *info);
 
 /* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */
@@ -74,12 +72,6 @@ static inline void panic_if_irq_remap(const char *msg)
 }
 
 static inline struct irq_domain *
-irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info)
-{
-	return NULL;
-}
-
-static inline struct irq_domain *
 irq_remapping_get_irq_domain(struct irq_alloc_info *info)
 {
 	return NULL;
diff --git a/arch/x86/include/asm/irqdomain.h b/arch/x86/include/asm/irqdomain.h
index c066ffae222b..cd684d45cb5f 100644
--- a/arch/x86/include/asm/irqdomain.h
+++ b/arch/x86/include/asm/irqdomain.h
@@ -51,9 +51,13 @@ extern int mp_irqdomain_ioapic_idx(struct irq_domain *domain);
 #endif /* CONFIG_X86_IO_APIC */
 
 #ifdef CONFIG_PCI_MSI
-extern void arch_init_msi_domain(struct irq_domain *domain);
+void x86_create_pci_msi_domain(void);
+struct irq_domain *native_create_pci_msi_domain(void);
+extern struct irq_domain *x86_pci_msi_default_domain;
 #else
-static inline void arch_init_msi_domain(struct irq_domain *domain) { }
+static inline void x86_create_pci_msi_domain(void) { }
+#define native_create_pci_msi_domain	NULL
+#define x86_pci_msi_default_domain	NULL
 #endif
 
 #endif
diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h
index 606cbaebd336..e90ac7e9ae2c 100644
--- a/arch/x86/include/asm/mpspec.h
+++ b/arch/x86/include/asm/mpspec.h
@@ -67,21 +67,11 @@ static inline void find_smp_config(void)
 #ifdef CONFIG_X86_MPPARSE
 extern void e820__memblock_alloc_reserved_mpc_new(void);
 extern int enable_update_mptable;
-extern int default_mpc_apic_id(struct mpc_cpu *m);
-extern void default_smp_read_mpc_oem(struct mpc_table *mpc);
-# ifdef CONFIG_X86_IO_APIC
-extern void default_mpc_oem_bus_info(struct mpc_bus *m, char *str);
-# else
-#  define default_mpc_oem_bus_info NULL
-# endif
 extern void default_find_smp_config(void);
 extern void default_get_smp_config(unsigned int early);
 #else
 static inline void e820__memblock_alloc_reserved_mpc_new(void) { }
 #define enable_update_mptable 0
-#define default_mpc_apic_id NULL
-#define default_smp_read_mpc_oem NULL
-#define default_mpc_oem_bus_info NULL
 #define default_find_smp_config x86_init_noop
 #define default_get_smp_config x86_init_uint_noop
 #endif
diff --git a/arch/x86/include/asm/msi.h b/arch/x86/include/asm/msi.h
index 25ddd0916bb2..cd30013d15d3 100644
--- a/arch/x86/include/asm/msi.h
+++ b/arch/x86/include/asm/msi.h
@@ -9,6 +9,4 @@ typedef struct irq_alloc_info msi_alloc_info_t;
 int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec,
 		    msi_alloc_info_t *arg);
 
-void pci_msi_set_desc(msi_alloc_info_t *arg, struct msi_desc *desc);
-
 #endif /* _ASM_X86_MSI_H */
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 7ccb338507e3..d2c76c8d8cfd 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -105,17 +105,6 @@ static inline void early_quirks(void) { }
 
 extern void pci_iommu_alloc(void);
 
-#ifdef CONFIG_PCI_MSI
-/* implemented in arch/x86/kernel/apic/io_apic. */
-struct msi_desc;
-int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
-void native_teardown_msi_irq(unsigned int irq);
-void native_restore_msi_irqs(struct pci_dev *dev);
-#else
-#define native_setup_msi_irqs		NULL
-#define native_teardown_msi_irq		NULL
-#endif
-
 /* generic pci stuff */
 #include <asm-generic/pci.h>
 
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index 73bb404f4d2a..490411dba438 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -114,9 +114,20 @@ extern const struct pci_raw_ops pci_direct_conf1;
 extern bool port_cf9_safe;
 
 /* arch_initcall level */
+#ifdef CONFIG_PCI_DIRECT
 extern int pci_direct_probe(void);
 extern void pci_direct_init(int type);
+#else
+static inline int pci_direct_probe(void) { return -1; }
+static inline  void pci_direct_init(int type) { }
+#endif
+
+#ifdef CONFIG_PCI_BIOS
 extern void pci_pcbios_init(void);
+#else
+static inline void pci_pcbios_init(void) { }
+#endif
+
 extern void __init dmi_check_pciprobe(void);
 extern void __init dmi_check_skip_isa_align(void);
 
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 6807153c0410..397196fae24d 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -8,25 +8,16 @@ struct mpc_bus;
 struct mpc_cpu;
 struct mpc_table;
 struct cpuinfo_x86;
+struct irq_domain;
 
 /**
  * struct x86_init_mpparse - platform specific mpparse ops
- * @mpc_record:			platform specific mpc record accounting
  * @setup_ioapic_ids:		platform specific ioapic id override
- * @mpc_apic_id:		platform specific mpc apic id assignment
- * @smp_read_mpc_oem:		platform specific oem mpc table setup
- * @mpc_oem_pci_bus:		platform specific pci bus setup (default NULL)
- * @mpc_oem_bus_info:		platform specific mpc bus info
  * @find_smp_config:		find the smp configuration
  * @get_smp_config:		get the smp configuration
  */
 struct x86_init_mpparse {
-	void (*mpc_record)(unsigned int mode);
 	void (*setup_ioapic_ids)(void);
-	int (*mpc_apic_id)(struct mpc_cpu *m);
-	void (*smp_read_mpc_oem)(struct mpc_table *mpc);
-	void (*mpc_oem_pci_bus)(struct mpc_bus *m);
-	void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
 	void (*find_smp_config)(void);
 	void (*get_smp_config)(unsigned int early);
 };
@@ -52,12 +43,14 @@ struct x86_init_resources {
  * @intr_init:			interrupt init code
  * @intr_mode_select:		interrupt delivery mode selection
  * @intr_mode_init:		interrupt delivery mode setup
+ * @create_pci_msi_domain:	Create the PCI/MSI interrupt domain
  */
 struct x86_init_irqs {
 	void (*pre_vector_init)(void);
 	void (*intr_init)(void);
 	void (*intr_mode_select)(void);
 	void (*intr_mode_init)(void);
+	struct irq_domain *(*create_pci_msi_domain)(void);
 };
 
 /**
@@ -283,9 +276,6 @@ struct x86_platform_ops {
 struct pci_dev;
 
 struct x86_msi_ops {
-	int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type);
-	void (*teardown_msi_irq)(unsigned int irq);
-	void (*teardown_msi_irqs)(struct pci_dev *dev);
 	void (*restore_msi_irqs)(struct pci_dev *dev);
 };
 
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 5f943b938167..b3eef1d5c903 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1429,6 +1429,9 @@ void __init apic_intr_mode_init(void)
 		break;
 	}
 
+	if (x86_platform.apic_post_init)
+		x86_platform.apic_post_init();
+
 	apic_bsp_setup(upmode);
 }
 
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 21f9c7f11779..7b3c7e0d4a09 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -860,10 +860,10 @@ void ioapic_set_alloc_attr(struct irq_alloc_info *info, int node,
 {
 	init_irq_alloc_info(info, NULL);
 	info->type = X86_IRQ_ALLOC_TYPE_IOAPIC;
-	info->ioapic_node = node;
-	info->ioapic_trigger = trigger;
-	info->ioapic_polarity = polarity;
-	info->ioapic_valid = 1;
+	info->ioapic.node = node;
+	info->ioapic.trigger = trigger;
+	info->ioapic.polarity = polarity;
+	info->ioapic.valid = 1;
 }
 
 #ifndef CONFIG_ACPI
@@ -878,32 +878,32 @@ static void ioapic_copy_alloc_attr(struct irq_alloc_info *dst,
 
 	copy_irq_alloc_info(dst, src);
 	dst->type = X86_IRQ_ALLOC_TYPE_IOAPIC;
-	dst->ioapic_id = mpc_ioapic_id(ioapic_idx);
-	dst->ioapic_pin = pin;
-	dst->ioapic_valid = 1;
-	if (src && src->ioapic_valid) {
-		dst->ioapic_node = src->ioapic_node;
-		dst->ioapic_trigger = src->ioapic_trigger;
-		dst->ioapic_polarity = src->ioapic_polarity;
+	dst->devid = mpc_ioapic_id(ioapic_idx);
+	dst->ioapic.pin = pin;
+	dst->ioapic.valid = 1;
+	if (src && src->ioapic.valid) {
+		dst->ioapic.node = src->ioapic.node;
+		dst->ioapic.trigger = src->ioapic.trigger;
+		dst->ioapic.polarity = src->ioapic.polarity;
 	} else {
-		dst->ioapic_node = NUMA_NO_NODE;
+		dst->ioapic.node = NUMA_NO_NODE;
 		if (acpi_get_override_irq(gsi, &trigger, &polarity) >= 0) {
-			dst->ioapic_trigger = trigger;
-			dst->ioapic_polarity = polarity;
+			dst->ioapic.trigger = trigger;
+			dst->ioapic.polarity = polarity;
 		} else {
 			/*
 			 * PCI interrupts are always active low level
 			 * triggered.
 			 */
-			dst->ioapic_trigger = IOAPIC_LEVEL;
-			dst->ioapic_polarity = IOAPIC_POL_LOW;
+			dst->ioapic.trigger = IOAPIC_LEVEL;
+			dst->ioapic.polarity = IOAPIC_POL_LOW;
 		}
 	}
 }
 
 static int ioapic_alloc_attr_node(struct irq_alloc_info *info)
 {
-	return (info && info->ioapic_valid) ? info->ioapic_node : NUMA_NO_NODE;
+	return (info && info->ioapic.valid) ? info->ioapic.node : NUMA_NO_NODE;
 }
 
 static void mp_register_handler(unsigned int irq, unsigned long trigger)
@@ -933,14 +933,14 @@ static bool mp_check_pin_attr(int irq, struct irq_alloc_info *info)
 	 * pin with real trigger and polarity attributes.
 	 */
 	if (irq < nr_legacy_irqs() && data->count == 1) {
-		if (info->ioapic_trigger != data->trigger)
-			mp_register_handler(irq, info->ioapic_trigger);
-		data->entry.trigger = data->trigger = info->ioapic_trigger;
-		data->entry.polarity = data->polarity = info->ioapic_polarity;
+		if (info->ioapic.trigger != data->trigger)
+			mp_register_handler(irq, info->ioapic.trigger);
+		data->entry.trigger = data->trigger = info->ioapic.trigger;
+		data->entry.polarity = data->polarity = info->ioapic.polarity;
 	}
 
-	return data->trigger == info->ioapic_trigger &&
-	       data->polarity == info->ioapic_polarity;
+	return data->trigger == info->ioapic.trigger &&
+	       data->polarity == info->ioapic.polarity;
 }
 
 static int alloc_irq_from_domain(struct irq_domain *domain, int ioapic, u32 gsi,
@@ -1002,7 +1002,7 @@ static int alloc_isa_irq_from_domain(struct irq_domain *domain,
 		if (!mp_check_pin_attr(irq, info))
 			return -EBUSY;
 		if (__add_pin_to_irq_node(irq_data->chip_data, node, ioapic,
-					  info->ioapic_pin))
+					  info->ioapic.pin))
 			return -ENOMEM;
 	} else {
 		info->flags |= X86_IRQ_ALLOC_LEGACY;
@@ -2092,8 +2092,8 @@ static int mp_alloc_timer_irq(int ioapic, int pin)
 		struct irq_alloc_info info;
 
 		ioapic_set_alloc_attr(&info, NUMA_NO_NODE, 0, 0);
-		info.ioapic_id = mpc_ioapic_id(ioapic);
-		info.ioapic_pin = pin;
+		info.devid = mpc_ioapic_id(ioapic);
+		info.ioapic.pin = pin;
 		mutex_lock(&ioapic_mutex);
 		irq = alloc_isa_irq_from_domain(domain, 0, ioapic, pin, &info);
 		mutex_unlock(&ioapic_mutex);
@@ -2297,9 +2297,9 @@ static int mp_irqdomain_create(int ioapic)
 		return 0;
 
 	init_irq_alloc_info(&info, NULL);
-	info.type = X86_IRQ_ALLOC_TYPE_IOAPIC;
-	info.ioapic_id = mpc_ioapic_id(ioapic);
-	parent = irq_remapping_get_ir_irq_domain(&info);
+	info.type = X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT;
+	info.devid = mpc_ioapic_id(ioapic);
+	parent = irq_remapping_get_irq_domain(&info);
 	if (!parent)
 		parent = x86_vector_domain;
 	else
@@ -2933,9 +2933,9 @@ int mp_ioapic_registered(u32 gsi_base)
 static void mp_irqdomain_get_attr(u32 gsi, struct mp_chip_data *data,
 				  struct irq_alloc_info *info)
 {
-	if (info && info->ioapic_valid) {
-		data->trigger = info->ioapic_trigger;
-		data->polarity = info->ioapic_polarity;
+	if (info && info->ioapic.valid) {
+		data->trigger = info->ioapic.trigger;
+		data->polarity = info->ioapic.polarity;
 	} else if (acpi_get_override_irq(gsi, &data->trigger,
 					 &data->polarity) < 0) {
 		/* PCI interrupts are always active low level triggered. */
@@ -2981,7 +2981,7 @@ int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
 		return -EINVAL;
 
 	ioapic = mp_irqdomain_ioapic_idx(domain);
-	pin = info->ioapic_pin;
+	pin = info->ioapic.pin;
 	if (irq_find_mapping(domain, (irq_hw_number_t)pin) > 0)
 		return -EEXIST;
 
@@ -2989,7 +2989,7 @@ int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
 	if (!data)
 		return -ENOMEM;
 
-	info->ioapic_entry = &data->entry;
+	info->ioapic.entry = &data->entry;
 	ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, info);
 	if (ret < 0) {
 		kfree(data);
@@ -2997,7 +2997,7 @@ int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
 	}
 
 	INIT_LIST_HEAD(&data->irq_2_pin);
-	irq_data->hwirq = info->ioapic_pin;
+	irq_data->hwirq = info->ioapic.pin;
 	irq_data->chip = (domain->parent == x86_vector_domain) ?
 			  &ioapic_chip : &ioapic_ir_chip;
 	irq_data->chip_data = data;
@@ -3007,8 +3007,8 @@ int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
 	add_pin_to_irq_node(data, ioapic_alloc_attr_node(info), ioapic, pin);
 
 	local_irq_save(flags);
-	if (info->ioapic_entry)
-		mp_setup_entry(cfg, data, info->ioapic_entry);
+	if (info->ioapic.entry)
+		mp_setup_entry(cfg, data, info->ioapic.entry);
 	mp_register_handler(virq, data->trigger);
 	if (virq < nr_legacy_irqs())
 		legacy_pic->mask(virq);
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index c2b2911feeef..6313f0a05db7 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -21,7 +21,7 @@
 #include <asm/apic.h>
 #include <asm/irq_remapping.h>
 
-static struct irq_domain *msi_default_domain;
+struct irq_domain *x86_pci_msi_default_domain __ro_after_init;
 
 static void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg)
 {
@@ -45,7 +45,7 @@ static void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg)
 		MSI_DATA_VECTOR(cfg->vector);
 }
 
-static void irq_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
+void x86_vector_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
 {
 	__irq_msi_compose_msg(irqd_cfg(data), msg);
 }
@@ -177,40 +177,10 @@ static struct irq_chip pci_msi_controller = {
 	.irq_mask		= pci_msi_mask_irq,
 	.irq_ack		= irq_chip_ack_parent,
 	.irq_retrigger		= irq_chip_retrigger_hierarchy,
-	.irq_compose_msi_msg	= irq_msi_compose_msg,
 	.irq_set_affinity	= msi_set_affinity,
 	.flags			= IRQCHIP_SKIP_SET_WAKE,
 };
 
-int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
-{
-	struct irq_domain *domain;
-	struct irq_alloc_info info;
-
-	init_irq_alloc_info(&info, NULL);
-	info.type = X86_IRQ_ALLOC_TYPE_MSI;
-	info.msi_dev = dev;
-
-	domain = irq_remapping_get_irq_domain(&info);
-	if (domain == NULL)
-		domain = msi_default_domain;
-	if (domain == NULL)
-		return -ENOSYS;
-
-	return msi_domain_alloc_irqs(domain, &dev->dev, nvec);
-}
-
-void native_teardown_msi_irq(unsigned int irq)
-{
-	irq_domain_free_irqs(irq, 1);
-}
-
-static irq_hw_number_t pci_msi_get_hwirq(struct msi_domain_info *info,
-					 msi_alloc_info_t *arg)
-{
-	return arg->msi_hwirq;
-}
-
 int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec,
 		    msi_alloc_info_t *arg)
 {
@@ -218,11 +188,10 @@ int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec,
 	struct msi_desc *desc = first_pci_msi_entry(pdev);
 
 	init_irq_alloc_info(arg, NULL);
-	arg->msi_dev = pdev;
 	if (desc->msi_attrib.is_msix) {
-		arg->type = X86_IRQ_ALLOC_TYPE_MSIX;
+		arg->type = X86_IRQ_ALLOC_TYPE_PCI_MSIX;
 	} else {
-		arg->type = X86_IRQ_ALLOC_TYPE_MSI;
+		arg->type = X86_IRQ_ALLOC_TYPE_PCI_MSI;
 		arg->flags |= X86_IRQ_ALLOC_CONTIGUOUS_VECTORS;
 	}
 
@@ -230,16 +199,8 @@ int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec,
 }
 EXPORT_SYMBOL_GPL(pci_msi_prepare);
 
-void pci_msi_set_desc(msi_alloc_info_t *arg, struct msi_desc *desc)
-{
-	arg->msi_hwirq = pci_msi_domain_calc_hwirq(ar