Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull core irq updates from Thomas Gleixner:
 "Updates from the irq departement:

   - Update the interrupt spreading code so it handles numa node with
     different CPU counts properly.

   - A large overhaul of the ARM GiCv3 driver to support new PPI and SPI
     ranges.

   - Conversion of all alloc_fwnode() users to use physical addresses
     instead of virtual addresses so the virtual addresses are not
     leaked. The physical address is sufficient to identify the
     associated interrupt chip.

   - Add support for Marvel MMP3, Amlogic Meson SM1 interrupt chips.

   - Enforce interrupt threading at compile time if RT is enabled.

   - Small updates and improvements all over the place"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
  irqchip/gic-v3-its: Fix LPI release for Multi-MSI devices
  irqchip/uniphier-aidet: Use devm_platform_ioremap_resource()
  irqdomain: Add the missing assignment of domain->fwnode for named fwnode
  irqchip/mmp: Coexist with GIC root IRQ controller
  irqchip/mmp: Mask off interrupts from other cores
  irqchip/mmp: Add missing chained_irq_{enter,exit}()
  irqchip/mmp: Do not use of_address_to_resource() to get mux regs
  irqchip/meson-gpio: Add support for meson sm1 SoCs
  dt-bindings: interrupt-controller: New binding for the meson sm1 SoCs
  genirq/affinity: Remove const qualifier from node_to_cpumask argument
  genirq/affinity: Spread vectors on node according to nr_cpu ratio
  genirq/affinity: Improve __irq_build_affinity_masks()
  irqchip: Remove dev_err() usage after platform_get_irq()
  irqchip: Add include guard to irq-partition-percpu.h
  irqchip/mmp: Do not call irq_set_default_host() on DT platforms
  irqchip/gic-v3-its: Remove the redundant set_bit for lpi_map
  irqchip/gic-v3: Add quirks for HIP06/07 invalid GICD_TYPER erratum 161010803
  irqchip/gic: Skip DT quirks when evaluating IIDR-based quirks
  irqchip/gic-v3: Warn about inconsistent implementations of extended ranges
  irqchip/gic-v3: Add EPPI range support
  ...

Documentation/arm64/silicon-errata.rst

@@ -115,6 +115,8 @@ stable kernels.
 +----------------+-----------------+-----------------+-----------------------------+
 | Hisilicon      | Hip0{6,7}       | #161010701      | N/A                         |
 +----------------+-----------------+-----------------+-----------------------------+
+| Hisilicon      | Hip0{6,7}       | #161010803      | N/A                         |
++----------------+-----------------+-----------------+-----------------------------+
 | Hisilicon      | Hip07           | #161600802      | HISILICON_ERRATUM_161600802 |
 +----------------+-----------------+-----------------+-----------------------------+
 | Hisilicon      | Hip08 SMMU PMCG | #162001800      | N/A                         |

Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt

@@ -16,6 +16,7 @@ Required properties:
     "amlogic,meson-gxl-gpio-intc" for GXL SoCs (S905X, S912)
     "amlogic,meson-axg-gpio-intc" for AXG SoCs (A113D, A113X)
     "amlogic,meson-g12a-gpio-intc" for G12A SoCs (S905D2, S905X2, S905Y2)
+    "amlogic,meson-sm1-gpio-intc" for SM1 SoCs (S905D3, S905X3, S905Y3)
 - reg : Specifies base physical address and size of the registers.
 - interrupt-controller : Identifies the node as an interrupt controller.
 - #interrupt-cells : Specifies the number of cells needed to encode an

Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml

@@ -44,11 +44,13 @@ properties:
       be at least 4.
 
       The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
-      interrupts. Other values are reserved for future use.
+      interrupts, 2 for interrupts in the Extended SPI range, 3 for the
+      Extended PPI range. Other values are reserved for future use.
 
       The 2nd cell contains the interrupt number for the interrupt type.
       SPI interrupts are in the range [0-987]. PPI interrupts are in the
-      range [0-15].
+      range [0-15]. Extented SPI interrupts are in the range [0-1023].
+      Extended PPI interrupts are in the range [0-127].
 
       The 3rd cell is the flags, encoded as follows:
       bits[3:0] trigger type and level flags.

arch/arm/mach-mmp/regs-icu.h

@@ -11,6 +11,9 @@
 #define ICU_VIRT_BASE	(AXI_VIRT_BASE + 0x82000)
 #define ICU_REG(x)	(ICU_VIRT_BASE + (x))
 
+#define ICU2_VIRT_BASE	(AXI_VIRT_BASE + 0x84000)
+#define ICU2_REG(x)	(ICU2_VIRT_BASE + (x))
+
 #define ICU_INT_CONF(n)		ICU_REG((n) << 2)
 #define ICU_INT_CONF_MASK	(0xf)
 

drivers/irqchip/irq-gic-common.c

@@ -41,6 +41,8 @@ void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
 		void *data)
 {
 	for (; quirks->desc; quirks++) {
+		if (quirks->compatible)
+			continue;
 		if (quirks->iidr != (quirks->mask & iidr))
 			continue;
 		if (quirks->init(data))
@@ -63,7 +65,7 @@ int gic_configure_irq(unsigned int irq, unsigned int type,
 	 * for "irq", depending on "type".
 	 */
 	raw_spin_lock_irqsave(&irq_controller_lock, flags);
-	val = oldval = readl_relaxed(base + GIC_DIST_CONFIG + confoff);
+	val = oldval = readl_relaxed(base + confoff);
 	if (type & IRQ_TYPE_LEVEL_MASK)
 		val &= ~confmask;
 	else if (type & IRQ_TYPE_EDGE_BOTH)
@@ -83,14 +85,10 @@ int gic_configure_irq(unsigned int irq, unsigned int type,
 	 * does not allow us to set the configuration or we are in a
 	 * non-secure mode, and hence it may not be catastrophic.
 	 */
-	writel_relaxed(val, base + GIC_DIST_CONFIG + confoff);
-	if (readl_relaxed(base + GIC_DIST_CONFIG + confoff) != val) {
-		if (WARN_ON(irq >= 32))
-			ret = -EINVAL;
-		else
-			pr_warn("GIC: PPI%d is secure or misconfigured\n",
-				irq - 16);
-	}
+	writel_relaxed(val, base + confoff);
+	if (readl_relaxed(base + confoff) != val)
+		ret = -EINVAL;
+
 	raw_spin_unlock_irqrestore(&irq_controller_lock, flags);
 
 	if (sync_access)
@@ -132,26 +130,31 @@ void gic_dist_config(void __iomem *base, int gic_irqs,
 		sync_access();
 }
 
-void gic_cpu_config(void __iomem *base, void (*sync_access)(void))
+void gic_cpu_config(void __iomem *base, int nr, void (*sync_access)(void))
 {
 	int i;
 
 	/*
 	 * Deal with the banked PPI and SGI interrupts - disable all
-	 * PPI interrupts, ensure all SGI interrupts are enabled.
-	 * Make sure everything is deactivated.
+	 * private interrupts. Make sure everything is deactivated.
 	 */
-	writel_relaxed(GICD_INT_EN_CLR_X32, base + GIC_DIST_ACTIVE_CLEAR);
-	writel_relaxed(GICD_INT_EN_CLR_PPI, base + GIC_DIST_ENABLE_CLEAR);
-	writel_relaxed(GICD_INT_EN_SET_SGI, base + GIC_DIST_ENABLE_SET);
+	for (i = 0; i < nr; i += 32) {
+		writel_relaxed(GICD_INT_EN_CLR_X32,
+			       base + GIC_DIST_ACTIVE_CLEAR + i / 8);
+		writel_relaxed(GICD_INT_EN_CLR_X32,
+			       base + GIC_DIST_ENABLE_CLEAR + i / 8);
+	}
 
 	/*
 	 * Set priority on PPI and SGI interrupts
 	 */
-	for (i = 0; i < 32; i += 4)
+	for (i = 0; i < nr; i += 4)
 		writel_relaxed(GICD_INT_DEF_PRI_X4,
 					base + GIC_DIST_PRI + i * 4 / 4);
 
+	/* Ensure all SGI interrupts are now enabled */
+	writel_relaxed(GICD_INT_EN_SET_SGI, base + GIC_DIST_ENABLE_SET);
+
 	if (sync_access)
 		sync_access();
 }

drivers/irqchip/irq-gic-common.h

@@ -22,7 +22,7 @@ int gic_configure_irq(unsigned int irq, unsigned int type,
                        void __iomem *base, void (*sync_access)(void));
 void gic_dist_config(void __iomem *base, int gic_irqs,
 		     void (*sync_access)(void));
-void gic_cpu_config(void __iomem *base, void (*sync_access)(void));
+void gic_cpu_config(void __iomem *base, int nr, void (*sync_access)(void));
 void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
 		void *data);
 void gic_enable_of_quirks(const struct device_node *np,

drivers/irqchip/irq-gic-v2m.c

@@ -525,7 +525,7 @@ acpi_parse_madt_msi(union acpi_subtable_headers *header,
 			spi_start, nr_spis);
 	}
 
-	fwnode = irq_domain_alloc_fwnode((void *)m->base_address);
+	fwnode = irq_domain_alloc_fwnode(&res.start);
 	if (!fwnode) {
 		pr_err("Unable to allocate GICv2m domain token\n");
 		return -EINVAL;

drivers/irqchip/irq-gic-v3-its.c

@@ -2464,6 +2464,7 @@ static int its_alloc_device_irq(struct its_device *dev, int nvecs, irq_hw_number
 {
 	int idx;
 
+	/* Find a free LPI region in lpi_map and allocate them. */
 	idx = bitmap_find_free_region(dev->event_map.lpi_map,
 				      dev->event_map.nr_lpis,
 				      get_count_order(nvecs));
@@ -2471,7 +2472,6 @@ static int its_alloc_device_irq(struct its_device *dev, int nvecs, irq_hw_number
 		return -ENOSPC;
 
 	*hwirq = dev->event_map.lpi_base + idx;
-	set_bit(idx, dev->event_map.lpi_map);
 
 	return 0;
 }
@@ -2641,14 +2641,13 @@ static void its_irq_domain_free(struct irq_domain *domain, unsigned int virq,
 	struct its_node *its = its_dev->its;
 	int i;
 
+	bitmap_release_region(its_dev->event_map.lpi_map,
+			      its_get_event_id(irq_domain_get_irq_data(domain, virq)),
+			      get_count_order(nr_irqs));
+
 	for (i = 0; i < nr_irqs; i++) {
 		struct irq_data *data = irq_domain_get_irq_data(domain,
 								virq + i);
-		u32 event = its_get_event_id(data);
-
-		/* Mark interrupt index as unused */
-		clear_bit(event, its_dev->event_map.lpi_map);
-
 		/* Nuke the entry in the domain */
 		irq_domain_reset_irq_data(data);
 	}
@@ -3921,7 +3920,7 @@ static int __init gic_acpi_parse_madt_its(union acpi_subtable_headers *header,
 	res.end = its_entry->base_address + ACPI_GICV3_ITS_MEM_SIZE - 1;
 	res.flags = IORESOURCE_MEM;
 
-	dom_handle = irq_domain_alloc_fwnode((void *)its_entry->base_address);
+	dom_handle = irq_domain_alloc_fwnode(&res.start);
 	if (!dom_handle) {
 		pr_err("ITS@%pa: Unable to allocate GICv3 ITS domain token\n",
 		       &res.start);

drivers/irqchip/irq-gic.c

@@ -291,6 +291,7 @@ static int gic_set_type(struct irq_data *d, unsigned int type)
 {
 	void __iomem *base = gic_dist_base(d);
 	unsigned int gicirq = gic_irq(d);
+	int ret;
 
 	/* Interrupt configuration for SGIs can't be changed */
 	if (gicirq < 16)
@@ -301,7 +302,14 @@ static int gic_set_type(struct irq_data *d, unsigned int type)
 			    type != IRQ_TYPE_EDGE_RISING)
 		return -EINVAL;
 
-	return gic_configure_irq(gicirq, type, base, NULL);
+	ret = gic_configure_irq(gicirq, type, base + GIC_DIST_CONFIG, NULL);
+	if (ret && gicirq < 32) {
+		/* Misconfigured PPIs are usually not fatal */
+		pr_warn("GIC: PPI%d is secure or misconfigured\n", gicirq - 16);
+		ret = 0;
+	}
+
+	return ret;
 }
 
 static int gic_irq_set_vcpu_affinity(struct irq_data *d, void *vcpu)
@@ -535,7 +543,7 @@ static int gic_cpu_init(struct gic_chip_data *gic)
 				gic_cpu_map[i] &= ~cpu_mask;
 	}
 
-	gic_cpu_config(dist_base, NULL);
+	gic_cpu_config(dist_base, 32, NULL);
 
 	writel_relaxed(GICC_INT_PRI_THRESHOLD, base + GIC_CPU_PRIMASK);
 	gic_cpu_if_up(gic);
@@ -1627,7 +1635,7 @@ static int __init gic_v2_acpi_init(struct acpi_subtable_header *header,
 	/*
 	 * Initialize GIC instance zero (no multi-GIC support).
 	 */
-	domain_handle = irq_domain_alloc_fwnode(gic->raw_dist_base);
+	domain_handle = irq_domain_alloc_fwnode(&dist->base_address);
 	if (!domain_handle) {
 		pr_err("Unable to allocate domain handle\n");
 		gic_teardown(gic);

drivers/irqchip/irq-hip04.c

@@ -130,7 +130,12 @@ static int hip04_irq_set_type(struct irq_data *d, unsigned int type)
 
 	raw_spin_lock(&irq_controller_lock);
 
-	ret = gic_configure_irq(irq, type, base, NULL);
+	ret = gic_configure_irq(irq, type, base + GIC_DIST_CONFIG, NULL);
+	if (ret && irq < 32) {
+		/* Misconfigured PPIs are usually not fatal */
+		pr_warn("GIC: PPI%d is secure or misconfigured\n", irq - 16);
+		ret = 0;
+	}
 
 	raw_spin_unlock(&irq_controller_lock);
 
@@ -268,7 +273,7 @@ static void hip04_irq_cpu_init(struct hip04_irq_data *intc)
 		if (i != cpu)
 			hip04_cpu_map[i] &= ~cpu_mask;
 
-	gic_cpu_config(dist_base, NULL);
+	gic_cpu_config(dist_base, 32, NULL);
 
 	writel_relaxed(0xf0, base + GIC_CPU_PRIMASK);
 	writel_relaxed(1, base + GIC_CPU_CTRL);

drivers/irqchip/irq-imgpdc.c

@@ -362,10 +362,8 @@ static int pdc_intc_probe(struct platform_device *pdev)
 	}
 	for (i = 0; i < priv->nr_perips; ++i) {
 		irq = platform_get_irq(pdev, 1 + i);
-		if (irq < 0) {
-			dev_err(&pdev->dev, "cannot find perip IRQ #%u\n", i);
+		if (irq < 0)
 			return irq;
-		}
 		priv->perip_irqs[i] = irq;
 	}
 	/* check if too many were provided */
@@ -376,10 +374,8 @@ static int pdc_intc_probe(struct platform_device *pdev)
 
 	/* Get syswake IRQ number */
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "cannot find syswake IRQ\n");
+	if (irq < 0)
 		return irq;
-	}
 	priv->syswake_irq = irq;
 
 	/* Set up an IRQ domain */

drivers/irqchip/irq-ixp4xx.c

@@ -319,7 +319,7 @@ void __init ixp4xx_irq_init(resource_size_t irqbase,
 		pr_crit("IXP4XX: could not ioremap interrupt controller\n");
 		return;
 	}
-	fwnode = irq_domain_alloc_fwnode(base);
+	fwnode = irq_domain_alloc_fwnode(&irqbase);
 	if (!fwnode) {
 		pr_crit("IXP4XX: no domain handle\n");
 		return;

drivers/irqchip/irq-keystone.c

@@ -164,10 +164,8 @@ static int keystone_irq_probe(struct platform_device *pdev)
 	}
 
 	kirq->irq = platform_get_irq(pdev, 0);
-	if (kirq->irq < 0) {
-		dev_err(dev, "no irq resource %d\n", kirq->irq);
+	if (kirq->irq < 0)
 		return kirq->irq;
-	}
 
 	kirq->dev = dev;
 	kirq->mask = ~0x0;

drivers/irqchip/irq-meson-gpio.c

@@ -24,14 +24,25 @@
 #define REG_PIN_47_SEL	0x08
 #define REG_FILTER_SEL	0x0c
 
-#define REG_EDGE_POL_MASK(x)	(BIT(x) | BIT(16 + (x)))
+/*
+ * Note: The S905X3 datasheet reports that BOTH_EDGE is controlled by
+ * bits 24 to 31. Tests on the actual HW show that these bits are
+ * stuck at 0. Bits 8 to 15 are responsive and have the expected
+ * effect.
+ */
 #define REG_EDGE_POL_EDGE(x)	BIT(x)
 #define REG_EDGE_POL_LOW(x)	BIT(16 + (x))
+#define REG_BOTH_EDGE(x)	BIT(8 + (x))
+#define REG_EDGE_POL_MASK(x)    (	\
+		REG_EDGE_POL_EDGE(x) |	\
+		REG_EDGE_POL_LOW(x)  |	\
+		REG_BOTH_EDGE(x))
 #define REG_PIN_SEL_SHIFT(x)	(((x) % 4) * 8)
 #define REG_FILTER_SEL_SHIFT(x)	((x) * 4)
 
 struct meson_gpio_irq_params {
 	unsigned int nr_hwirq;
+	bool support_edge_both;
 };
 
 static const struct meson_gpio_irq_params meson8_params = {
@@ -54,6 +65,11 @@ static const struct meson_gpio_irq_params axg_params = {
 	.nr_hwirq = 100,
 };
 
+static const struct meson_gpio_irq_params sm1_params = {
+	.nr_hwirq = 100,
+	.support_edge_both = true,
+};
+
 static const struct of_device_id meson_irq_gpio_matches[] = {
 	{ .compatible = "amlogic,meson8-gpio-intc", .data = &meson8_params },
 	{ .compatible = "amlogic,meson8b-gpio-intc", .data = &meson8b_params },
@@ -61,11 +77,12 @@ static const struct of_device_id meson_irq_gpio_matches[] = {
 	{ .compatible = "amlogic,meson-gxl-gpio-intc", .data = &gxl_params },
 	{ .compatible = "amlogic,meson-axg-gpio-intc", .data = &axg_params },
 	{ .compatible = "amlogic,meson-g12a-gpio-intc", .data = &axg_params },
+	{ .compatible = "amlogic,meson-sm1-gpio-intc", .data = &sm1_params },
 	{ }
 };
 
 struct meson_gpio_irq_controller {
-	unsigned int nr_hwirq;
+	const struct meson_gpio_irq_params *params;
 	void __iomem *base;
 	u32 channel_irqs[NUM_CHANNEL];
 	DECLARE_BITMAP(channel_map, NUM_CHANNEL);
@@ -168,14 +185,22 @@ static int meson_gpio_irq_type_setup(struct meson_gpio_irq_controller *ctl,
 	 */
 	type &= IRQ_TYPE_SENSE_MASK;
 
-	if (type == IRQ_TYPE_EDGE_BOTH)
-		return -EINVAL;
+	/*
+	 * New controller support EDGE_BOTH trigger. This setting takes
+	 * precedence over the other edge/polarity settings
+	 */
+	if (type == IRQ_TYPE_EDGE_BOTH) {
+		if (!ctl->params->support_edge_both)
+			return -EINVAL;
 
-	if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
-		val |= REG_EDGE_POL_EDGE(idx);
+		val |= REG_BOTH_EDGE(idx);
+	} else {
+		if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
+			val |= REG_EDGE_POL_EDGE(idx);
 
-	if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING))
-		val |= REG_EDGE_POL_LOW(idx);
+		if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING))
+			val |= REG_EDGE_POL_LOW(idx);
+	}
 
 	spin_lock(&ctl->lock);
 
@@ -199,7 +224,7 @@ static unsigned int meson_gpio_irq_type_output(unsigned int type)
 	 */
 	if (sense & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
 		type |= IRQ_TYPE_LEVEL_HIGH;
-	else if (sense & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
+	else
 		type |= IRQ_TYPE_EDGE_RISING;
 
 	return type;
@@ -328,15 +353,13 @@ static int __init meson_gpio_irq_parse_dt(struct device_node *node,
 					  struct meson_gpio_irq_controller *ctl)
 {
 	const struct of_device_id *match;
-	const struct meson_gpio_irq_params *params;
 	int ret;
 
 	match = of_match_node(meson_irq_gpio_matches, node);
 	if (!match)
 		return -ENODEV;
 
-	params = match->data;
-	ctl->nr_hwirq = params->nr_hwirq;
+	ctl->params = match->data;
 
 	ret = of_property_read_variable_u32_array(node,
 						  "amlogic,channel-interrupts",
@@ -385,7 +408,8 @@ static int __init meson_gpio_irq_of_init(struct device_node *node,
 	if (ret)
 		goto free_channel_irqs;
 
-	domain = irq_domain_create_hierarchy(parent_domain, 0, ctl->nr_hwirq,
+	domain = irq_domain_create_hierarchy(parent_domain, 0,
+					     ctl->params->nr_hwirq,
 					     of_node_to_fwnode(node),
 					     &meson_gpio_irq_domain_ops,
 					     ctl);
@@ -396,7 +420,7 @@ static int __init meson_gpio_irq_of_init(struct device_node *node,
 	}
 
 	pr_info("%d to %d gpio interrupt mux initialized\n",
-		ctl->nr_hwirq, NUM_CHANNEL);
+		ctl->params->nr_hwirq, NUM_CHANNEL);
 
 	return 0;
 

drivers/irqchip/irq-mmp.c

@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/irqchip.h>
+#include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
@@ -43,6 +44,7 @@ struct icu_chip_data {
 	unsigned int		conf_enable;
 	unsigned int		conf_disable;
 	unsigned int		conf_mask;
+	unsigned int		conf2_mask;
 	unsigned int		clr_mfp_irq_base;
 	unsigned int		clr_mfp_hwirq;
 	struct irq_domain	*domain;
@@ -52,9 +54,11 @@ struct mmp_intc_conf {
 	unsigned int	conf_enable;
 	unsigned int	conf_disable;
 	unsigned int	conf_mask;
+	unsigned int	conf2_mask;
 };
 
 static void __iomem *mmp_icu_base;
+static void __iomem *mmp_icu2_base;
 static struct icu_chip_data icu_data[MAX_ICU_NR];
 static int max_icu_nr;
 
@@ -97,6 +101,16 @@ static void icu_mask_irq(struct irq_data *d)
 		r &= ~data->conf_mask;
 		r |= data->conf_disable;
 		writel_relaxed(r, mmp_icu_base + (hwirq << 2));
+
+		if (data->conf2_mask) {
+			/*
+			 * ICU1 (above) only controls PJ4 MP1; if using SMP,
+			 * we need to also mask the MP2 and MM cores via ICU2.
+			 */
+			r = readl_relaxed(mmp_icu2_base + (hwirq << 2));
+			r &= ~data->conf2_mask;
+			writel_relaxed(r, mmp_icu2_base + (hwirq << 2));
+		}
 	} else {
 		r = readl_relaxed(data->reg_mask) | (1 << hwirq);
 		writel_relaxed(r, data->reg_mask);
@@ -132,11 +146,14 @@ struct irq_chip icu_irq_chip = {
 static void icu_mux_irq_demux(struct irq_desc *desc)
 {
 	unsigned int irq = irq_desc_get_irq(desc);
+	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct irq_domain *domain;
 	struct icu_chip_data *data;
 	int i;
 	unsigned long mask, status, n;
 
+	chained_irq_enter(chip, desc);
+
 	for (i = 1; i < max_icu_nr; i++) {
 		if (irq == icu_data[i].cascade_irq) {
 			domain = icu_data[i].domain;
@@ -146,7 +163,7 @@ static void icu_mux_irq_demux(struct irq_desc *desc)
 	}
 	if (i >= max_icu_nr) {
 		pr_err("Spurious irq %d in MMP INTC\n", irq);
-		return;
+		goto out;
 	}
 
 	mask = readl_relaxed(data->reg_mask);
@@ -158,6 +175,9 @@ static void icu_mux_irq_demux(struct irq_desc *desc)
 			generic_handle_irq(icu_data[i].virq_base + n);
 		}
 	}
+
+out:
+	chained_irq_exit(chip, desc);
 }
 
 static int mmp_irq_domain_map(struct irq_domain *d, unsigned int irq,
@@ -194,6 +214,14 @@ static const struct mmp_intc_conf mmp2_conf = {
 			  MMP2_ICU_INT_ROUTE_PJ4_FIQ,
 };
 
+static struct mmp_intc_conf mmp3_conf = {
+	.conf_enable	= 0x20,
+	.conf_disable	= 0x0,
+	.conf_mask	= MMP2_ICU_INT_ROUTE_PJ4_IRQ |
+			  MMP2_ICU_INT_ROUTE_PJ4_FIQ,
+	.conf2_mask	= 0xf0,
+};
+
 static void __exception_irq_entry mmp_handle_irq(struct pt_regs *regs)
 {
 	int hwirq;
@@ -395,7 +423,6 @@ static int __init mmp_of_init(struct device_node *node,
 	icu_data[0].conf_enable = mmp_conf.conf_enable;
 	icu_data[0].conf_disable = mmp_conf.conf_disable;
 	icu_data[0].conf_mask = mmp_conf.conf_mask;
-	irq_set_default_host(icu_data[0].domain);
 	set_handle_irq(mmp_handle_irq);
 	max_icu_nr = 1;
 	return 0;
@@ -414,19 +441,50 @@ static int __init mmp2_of_init(struct device_node *node,
 	icu_data[0].conf_enable = mmp2_conf.conf_enable;
 	icu_data[0].conf_disable = mmp2_conf.conf_disable;
 	icu_data[0].conf_mask = mmp2_conf.conf_mask;
-	irq_set_default_host(icu_data[0].domain);
 	set_handle_irq(mmp2_handle_irq);
 	max_icu_nr = 1;
 	return 0;
 }
 IRQCHIP_DECLARE(mmp2_intc, "mrvl,mmp2-intc", mmp2_of_init);
 
+static int __init mmp3_of_init(struct device_node *node,
+			       struct device_node *parent)
+{
+	int ret;
+
+	mmp_icu2_base = of_iomap(node, 1);
+	if (!mmp_icu2_base) {
+		pr_err("Failed to get interrupt controller register #2\n");
+		return -ENODEV;
+	}
+
+	ret = mmp_init_bases(node);
+	if (ret < 0) {
+		iounmap(mmp_icu2_base);
+		return ret;
+	}
+
+	icu_data[0].conf_enable = mmp3_conf.conf_enable;
+	icu_data[0].conf_disable = mmp3_conf.conf_disable;
+	icu_data[0].conf_mask = mmp3_conf.conf_mask;
+	icu_data[0].conf2_mask = mmp3_conf.conf2_mask;
+
+	if (!parent) {
+		/* This is the main interrupt controller. */
+		set_handle_irq(mmp2_handle_irq);
+	}
+
+	max_icu_nr = 1;
+	return 0;
+}
+IRQCHIP_DECLARE(mmp3_intc, "marvell,mmp3-intc", mmp3_of_init);
+
 static int __init mmp2_mux_of_init(struct device_node *node,
 				   struct device_node *parent)
 {
-	struct resource res;
 	int i, ret, irq, j = 0;
 	u32 nr_irqs, mfp_irq;
+	u32 reg[4];
 
 	if (!parent)
 		return -ENODEV;
@@ -438,18 +496,22 @@ static int __init mmp2_mux_of_init(struct device_node *node,
 		pr_err("Not found mrvl,intc-nr-irqs property\n");
 		return -EINVAL;
 	}
-	ret = of_address_to_resource(node, 0, &res);
-	if (ret < 0) {
-		pr_err("Not found reg property\n");
-		return -EINVAL;
-	}
-	icu_data[i].reg_status = mmp_icu_base + res.start;
-	ret = of_address_to_resource(node, 1, &res);
+
+	/*
+	 * For historical reasons, the "regs" property of the
+	 * mrvl,mmp2-mux-intc is not a regular "regs" property containing
+	 * addresses on the parent bus, but offsets from the intc's base.
+	 * That is why we can't use of_address_to_resource() here.
+	 */
+	ret = of_property_read_variable_u32_array(node, "reg", reg,
+						  ARRAY_SIZE(reg),
+						  ARRAY_SIZE(reg));
 	if (ret < 0) {
 		pr_err("Not found reg property\n");
 		return -EINVAL;
 	}
-	icu_data[i].reg_mask = mmp_icu_base + res.start;
+	icu_data[i].reg_status = mmp_icu_base + reg[0];
+	icu_data[i].reg_mask = mmp_icu_base + reg[2];
 	icu_data[i].cascade_irq = irq_of_parse_and_map(node, 0);
 	if (!icu_data[i].cascade_irq)
 		return -EINVAL;

drivers/irqchip/irq-uniphier-aidet.c

@@ -166,7 +166,6 @@ static int uniphier_aidet_probe(struct platform_device *pdev)
 	struct device_node *parent_np;
 	struct irq_domain *parent_domain;
 	struct uniphier_aidet_priv *priv;
-	struct resource *res;
 
 	parent_np = of_irq_find_parent(dev->of_node);
 	if (!parent_np)
@@ -181,8 +180,7 @@ static int uniphier_aidet_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->reg_base = devm_ioremap_resource(dev, res);
+	priv->reg_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->reg_base))
 		return PTR_ERR(priv->reg_base);
 

drivers/irqchip/qcom-irq-combiner.c

@@ -248,10 +248,8 @@ static int __init combiner_probe(struct platform_device *pdev)
 		return err;
 
 	combiner->parent_irq = platform_get_irq(pdev, 0);
-	if (combiner->parent_irq <= 0) {
-		dev_err(&pdev->dev, "Error getting IRQ resource\n");
+	if (combiner->parent_irq <= 0)
 		return -EPROBE_DEFER;
-	}
 
 	combiner->domain = irq_domain_create_linear(pdev->dev.fwnode, combiner->nirqs,
 						    &domain_ops, combiner);

drivers/pci/controller/pci-hyperv.c

@@ -2521,6 +2521,7 @@ static int hv_pci_probe(struct hv_device *hdev,
 			const struct hv_vmbus_device_id *dev_id)
 {
 	struct hv_pcibus_device *hbus;
+	char *name;
 	int ret;
 
 	/*
@@ -2589,7 +2590,14 @@ static int hv_pci_probe(struct hv_device *hdev,
 		goto free_config;
 	}
 
-	hbus->sysdata.fwnode = irq_domain_alloc_fwnode(hbus);
+	name = kasprintf(GFP_KERNEL, "%pUL", &hdev->dev_instance);
+	if (!name) {
+		ret = -ENOMEM;
+		goto unmap;
+	}
+
+	hbus->sysdata.fwnode = irq_domain_alloc_named_fwnode(name);
+	kfree(name);
 	if (!hbus->sysdata.fwnode) {
 		ret = -ENOMEM;
 		goto unmap;

include/linux/interrupt.h

@@ -472,7 +472,11 @@ extern int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
 				 bool state);
 
 #ifdef CONFIG_IRQ_FORCED_THREADING
+# ifdef CONFIG_PREEMPT_RT
+#  define force_irqthreads	(true)
+# else
 extern bool force_irqthreads;
+# endif
 #else
 #define force_irqthreads	(0)
 #endif

include/linux/irqchip/arm-gic-v3.h

@@ -30,10 +30,22 @@
 #define GICD_ICFGR			0x0C00
 #define GICD_IGRPMODR			0x0D00
 #define GICD_NSACR			0x0E00
+#define GICD_IGROUPRnE			0x1000
+#define GICD_ISENABLERnE		0x1200
+#define GICD_ICENABLERnE		0x1400
+#define GICD_ISPENDRnE			0x1600
+#define GICD_ICPENDRnE			0x1800
+#define GICD_ISACTIVERnE		0x1A00
+#define GICD_ICACTIVERnE		0x1C00
+#define GICD_IPRIORITYRnE		0x2000
+#define GICD_ICFGRnE			0x3000
 #define GICD_IROUTER			0x6000
+#define GICD_IROUTERnE			0x8000
 #define GICD_IDREGS			0xFFD0
 #define GICD_PIDR2			0xFFE8
 
+#define ESPI_BASE_INTID			4096
+
 /*
  * Those registers are actually from GICv2, but the spec demands that they
  * are implemented as RES0 if ARE is 1 (which we do in KVM's emulated GICv3).
@@ -69,10 +81,13 @@
 #define GICD_TYPER_RSS			(1U << 26)
 #define GICD_TYPER_LPIS			(1U << 17)
 #define GICD_TYPER_MBIS			(1U << 16)
+#define GICD_TYPER_ESPI			(1U << 8)
 
 #define GICD_TYPER_ID_BITS(typer)	((((typer) >> 19) & 0x1f) + 1)
 #define GICD_TYPER_NUM_LPIS(typer)	((((typer) >> 11) & 0x1f) + 1)
-#define GICD_TYPER_IRQS(typer)		((((typer) & 0x1f) + 1) * 32)
+#define GICD_TYPER_SPIS(typer)		((((typer) & 0x1f) + 1) * 32)
+#define GICD_TYPER_ESPIS(typer)						\
+	(((typer) & GICD_TYPER_ESPI) ? GICD_TYPER_SPIS((typer) >> 27) : 0)
 
 #define GICD_IROUTER_SPI_MODE_ONE	(0U << 31)
 #define GICD_IROUTER_SPI_MODE_ANY	(1U << 31)
@@ -109,6 +124,18 @@
 
 #define GICR_TYPER_CPU_NUMBER(r)	(((r) >> 8) & 0xffff)
 
+#define EPPI_BASE_INTID			1056
+
+#define GICR_TYPER_NR_PPIS(r)						\
+	({								\
+		unsigned int __ppinum = ((r) >> 27) & 0x1f;		\
+		unsigned int __nr_ppis = 16;				\
+		if (__ppinum == 1 || __ppinum == 2)			\
+			__nr_ppis +=  __ppinum * 32;			\
+									\
+		__nr_ppis;						\
+	 })
+
 #define GICR_WAKER_ProcessorSleep	(1U << 1)
 #define GICR_WAKER_ChildrenAsleep	(1U << 2)
 
@@ -469,6 +496,7 @@
 #define ICC_CTLR_EL1_A3V_SHIFT		15
 #define ICC_CTLR_EL1_A3V_MASK		(0x1 << ICC_CTLR_EL1_A3V_SHIFT)
 #define ICC_CTLR_EL1_RSS		(0x1 << 18)
+#define ICC_CTLR_EL1_ExtRange		(0x1 << 19)
 #define ICC_PMR_EL1_SHIFT		0
 #define ICC_PMR_EL1_MASK		(0xff << ICC_PMR_EL1_SHIFT)
 #define ICC_BPR0_EL1_SHIFT		0

include/linux/irqchip/irq-partition-percpu.h

@@ -4,6 +4,9 @@
  * Author: Marc Zyngier <marc.zyngier@arm.com>
  */
 
+#ifndef __LINUX_IRQCHIP_IRQ_PARTITION_PERCPU_H
+#define __LINUX_IRQCHIP_IRQ_PARTITION_PERCPU_H
+
 #include <linux/fwnode.h>
 #include <linux/cpumask.h>
 #include <linux/irqdomain.h>
@@ -46,3 +49,5 @@ struct irq_domain *partition_get_domain(struct partition_desc *dsc)
 	return NULL;
 }
 #endif
+
+#endif /* __LINUX_IRQCHIP_IRQ_PARTITION_PERCPU_H */

include/linux/irqdomain.h

@@ -220,7 +220,7 @@ static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
 
 #ifdef CONFIG_IRQ_DOMAIN
 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
-						const char *name, void *data);
+						const char *name, phys_addr_t *pa);
 
 enum {
 	IRQCHIP_FWNODE_REAL,
@@ -241,9 +241,9 @@ struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id)
 					 NULL);
 }
 
-static inline struct fwnode_handle *irq_domain_alloc_fwnode(void *data)
+static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa)
 {
-	return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, data);
+	return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa);
 }
 
 void irq_domain_free_fwnode(struct fwnode_handle *fwnode);

kernel/irq/affinity.c

@@ -7,6 +7,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/cpu.h>
+#include <linux/sort.h>
 
 static void irq_spread_init_one(struct cpumask *irqmsk, struct cpumask *nmsk,
 				unsigned int cpus_per_vec)
@@ -94,6 +95,155 @@ static int get_nodes_in_cpumask(cpumask_var_t *node_to_cpumask,
 	return nodes;
 }
 
+struct node_vectors {
+	unsigned id;
+
+	union {
+		unsigned nvectors;
+		unsigned ncpus;
+	};
+};
+
+static int ncpus_cmp_func(const void *l, const void *r)
+{
+	const struct node_vectors *ln = l;
+	const struct node_vectors *rn = r;
+
+	return ln->ncpus - rn->ncpus;
+}
+
+/*
+ * Allocate vector number for each node, so that for each node:
+ *
+ * 1) the allocated number is >= 1
+ *
+ * 2) the allocated numbver is <= active CPU number of this node
+ *
+ * The actual allocated total vectors may be less than @numvecs when
+ * active total CPU number is less than @numvecs.
+ *
+ * Active CPUs means the CPUs in '@cpu_mask AND @node_to_cpumask[]'
+ * for each node.
+ */
+static void alloc_nodes_vectors(unsigned int numvecs,
+				cpumask_var_t *node_to_cpumask,
+				const struct cpumask *cpu_mask,
+				const nodemask_t nodemsk,
+				struct cpumask *nmsk,
+				struct node_vectors *node_vectors)
+{
+	unsigned n, remaining_ncpus = 0;
+
+	for (n = 0; n < nr_node_ids; n++) {
+		node_vectors[n].id = n;
+		node_vectors[n].ncpus = UINT_MAX;
+	}
+
+	for_each_node_mask(n, nodemsk) {
+		unsigned ncpus;
+
+		cpumask_and(nmsk, cpu_mask, node_to_cpumask[n]);
+		ncpus = cpumask_weight(nmsk);
+
+		if (!ncpus)
+			continue;
+		remaining_ncpus += ncpus;
+		node_vectors[n].ncpus = ncpus;
+	}
+
+	numvecs = min_t(unsigned, remaining_ncpus, numvecs);
+
+	sort(node_vectors, nr_node_ids, sizeof(node_vectors[0]),
+	     ncpus_cmp_func, NULL);
+
+	/*
+	 * Allocate vectors for each node according to the ratio of this
+	 * node's nr_cpus to remaining un-assigned ncpus. 'numvecs' is
+	 * bigger than number of active numa nodes. Always start the
+	 * allocation from the node with minimized nr_cpus.
+	 *
+	 * This way guarantees that each active node gets allocated at
+	 * least one vector, and the theory is simple: over-allocation
+	 * is only done when this node is assigned by one vector, so
+	 * other nodes will be allocated >= 1 vector, since 'numvecs' is
+	 * bigger than number of numa nodes.
+	 *
+	 * One perfect invariant is that number of allocated vectors for
+	 * each node is <= CPU count of this node:
+	 *
+	 * 1) suppose there are two nodes: A and B
+	 * 	ncpu(X) is CPU count of node X
+	 * 	vecs(X) is the vector count allocated to node X via this
+	 * 	algorithm
+	 *
+	 * 	ncpu(A) <= ncpu(B)
+	 * 	ncpu(A) + ncpu(B) = N
+	 * 	vecs(A) + vecs(B) = V
+	 *
+	 * 	vecs(A) = max(1, round_down(V * ncpu(A) / N))
+	 * 	vecs(B) = V - vecs(A)
+	 *
+	 * 	both N and V are integer, and 2 <= V <= N, suppose
+	 * 	V = N - delta, and 0 <= delta <= N - 2
+	 *
+	 * 2) obviously vecs(A) <= ncpu(A) because:
+	 *
+	 * 	if vecs(A) is 1, then vecs(A) <= ncpu(A) given
+	 * 	ncpu(A) >= 1
+	 *
+	 * 	otherwise,
+	 * 		vecs(A) <= V * ncpu(A) / N <= ncpu(A), given V <= N
+	 *
+	 * 3) prove how vecs(B) <= ncpu(B):
+	 *
+	 * 	if round_down(V * ncpu(A) / N) == 0, vecs(B) won't be
+	 * 	over-allocated, so vecs(B) <= ncpu(B),
+	 *
+	 * 	otherwise:
+	 *
+	 * 	vecs(A) =
+	 * 		round_down(V * ncpu(A) / N) =
+	 * 		round_down((N - delta) * ncpu(A) / N) =
+	 * 		round_down((N * ncpu(A) - delta * ncpu(A)) / N)	 >=
+	 * 		round_down((N * ncpu(A) - delta * N) / N)	 =
+	 * 		cpu(A) - delta
+	 *
+	 * 	then:
+	 *
+	 * 	vecs(A) - V >= ncpu(A) - delta - V
+	 * 	=>
+	 * 	V - vecs(A) <= V + delta - ncpu(A)
+	 * 	=>
+	 * 	vecs(B) <= N - ncpu(A)
+	 * 	=>
+	 * 	vecs(B) <= cpu(B)
+	 *
+	 * For nodes >= 3, it can be thought as one node and another big
+	 * node given that is exactly what this algorithm is implemented,
+	 * and we always re-calculate 'remaining_ncpus' & 'numvecs', and
+	 * finally for each node X: vecs(X) <= ncpu(X).
+	 *
+	 */
+	for (n = 0; n < nr_node_ids; n++) {
+		unsigned nvectors, ncpus;
+
+		if (node_vectors[n].ncpus == UINT_MAX)
+			continue;
+
+		WARN_ON_ONCE(numvecs == 0);
+
+		ncpus = node_vectors[n].ncpus;
+		nvectors = max_t(unsigned, 1,
+				 numvecs * ncpus / remaining_ncpus);
+		WARN_ON_ONCE(nvectors > ncpus);
+
+		node_vectors[n].nvectors = nvectors;
+
+		remaining_ncpus -= ncpus;
+		numvecs -= nvectors;
+	}
+}
+
 static int __irq_build_affinity_masks(unsigned int startvec,
 				      unsigned int numvecs,
 				      unsigned int firstvec,
@@ -102,10 +252,11 @@ static int __irq_build_affinity_masks(unsigned int startvec,
 				      struct cpumask *nmsk,
 				      struct irq_affinity_desc *masks)
 {
-	unsigned int n, nodes, cpus_per_vec, extra_vecs, done = 0;
+	unsigned int i, n, nodes, cpus_per_vec, extra_vecs, done = 0;
 	unsigned int last_affv = firstvec + numvecs;
 	unsigned int curvec = startvec;
 	nodemask_t nodemsk = NODE_MASK_NONE;
+	struct node_vectors *node_vectors;
 
 	if (!cpumask_weight(cpu_mask))
 		return 0;
@@ -126,42 +277,56 @@ static int __irq_build_affinity_masks(unsigned int startvec,
 		return numvecs;
 	}
 
-	for_each_node_mask(n, nodemsk) {
-		unsigned int ncpus, v, vecs_to_assign, vecs_per_node;
+	node_vectors = kcalloc(nr_node_ids,
+			       sizeof(struct node_vectors),
+			       GFP_KERNEL);
+	if (!node_vectors)
+		return -ENOMEM;
 
-		/* Spread the vectors per node */
-		vecs_per_node = (numvecs - (curvec - firstvec)) / nodes;
+	/* allocate vector number for each node */
+	alloc_nodes_vectors(numvecs, node_to_cpumask, cpu_mask,
+			    nodemsk, nmsk, node_vectors);
 
-		/* Get the cpus on this node which are in the mask */
-		cpumask_and(nmsk, cpu_mask, node_to_cpumask[n]);
+	for (i = 0; i < nr_node_ids; i++) {
+		unsigned int ncpus, v;
+		struct node_vectors *nv = &node_vectors[i];
+
+		if (nv->nvectors == UINT_MAX)
+			continue;
 
-		/* Calculate the number of cpus per vector */
+		/* Get the cpus on this node which are in the mask */
+		cpumask_and(nmsk, cpu_mask, node_to_cpumask[nv->id]);
 		ncpus = cpumask_weight(nmsk);
-		vecs_to_assign = min(vecs_per_node, ncpus);
+		if (!ncpus)
+			continue;
+
+		WARN_ON_ONCE(nv->nvectors > ncpus);
 
 		/* Account for rounding errors */
-		extra_vecs = ncpus - vecs_to_assign * (ncpus / vecs_to_assign);
+		extra_vecs = ncpus - nv->nvectors * (ncpus / nv->nvectors);
 
-		for (v = 0; curvec < last_affv && v < vecs_to_assign;
-		     curvec++, v++) {
-			cpus_per_vec = ncpus / vecs_to_assign;
+		/* Spread allocated vectors on CPUs of the current node */
+		for (v = 0; v < nv->nvectors; v++, curvec++) {
+			cpus_per_vec = ncpus / nv->nvectors;
 
 			/* Account for extra vectors to compensate rounding errors */
 			if (extra_vecs) {
 				cpus_per_vec++;
 				--extra_vecs;
 			}
+
+			/*
+			 * wrapping has to be considered given 'startvec'
+			 * may start anywhere
+			 */
+			if (curvec >= last_affv)
+				curvec = firstvec;
 			irq_spread_init_one(&masks[curvec].mask, nmsk,
 						cpus_per_vec);
 		}
-
-		done += v;
-		if (done >= numvecs)
-			break;
-		if (curvec >= last_affv)
-			curvec = firstvec;
-		--nodes;
+		done += nv->nvectors;
 	}
+	kfree(node_vectors);
 	return done;
 }
 
@@ -174,7 +339,7 @@ static int irq_build_affinity_masks(unsigned int startvec, unsigned int numvecs,
 				    unsigned int firstvec,
 				    struct irq_affinity_desc *masks)
 {
-	unsigned int curvec = startvec, nr_present, nr_others;
+	unsigned int curvec = startvec, nr_present = 0, nr_others = 0;
 	cpumask_var_t *node_to_cpumask;
 	cpumask_var_t nmsk, npresmsk;
 	int ret = -ENOMEM;
@@ -189,15 +354,17 @@ static int irq_build_affinity_masks(unsigned int startvec, unsigned int numvecs,
 	if (!node_to_cpumask)
 		goto fail_npresmsk;
 
-	ret = 0;
 	/* Stabilize the cpumasks */
 	get_online_cpus();
 	build_node_to_cpumask(node_to_cpumask);
 
 	/* Spread on present CPUs starting from affd->pre_vectors */
-	nr_present = __irq_build_affinity_masks(curvec, numvecs,
-						firstvec, node_to_cpumask,
-						cpu_present_mask, nmsk, masks);
+	ret = __irq_build_affinity_masks(curvec, numvecs, firstvec,
+					 node_to_cpumask, cpu_present_mask,
+					 nmsk, masks);
+	if (ret < 0)
+		goto fail_build_affinity;
+	nr_present = ret;
 
 	/*
 	 * Spread on non present CPUs starting from the next vector to be
@@ -210,12 +377,16 @@ static int irq_build_affinity_masks(unsigned int startvec, unsigned int numvecs,
 	else
 		curvec = firstvec + nr_present;
 	cpumask_andnot(npresmsk, cpu_possible_mask, cpu_present_mask);
-	nr_others = __irq_build_affinity_masks(curvec, numvecs,
-					       firstvec, node_to_cpumask,
-					       npresmsk, nmsk, masks);
+	ret = __irq_build_affinity_masks(curvec, numvecs, firstvec,
+					 node_to_cpumask, npresmsk, nmsk,
+					 masks);
+	if (ret >= 0)
+		nr_others = ret;
+
+ fail_build_affinity:
 	put_online_cpus();
 
-	if (nr_present < numvecs)
+	if (ret >= 0)
 		WARN_ON(nr_present + nr_others < numvecs);
 
 	free_node_to_cpumask(node_to_cpumask);
@@ -225,7 +396,7 @@ static int irq_build_affinity_masks(unsigned int startvec, unsigned int numvecs,
 
  fail_nmsk:
 	free_cpumask_var(nmsk);
-	return ret;
+	return ret < 0 ? ret : 0;
 }
 
 static void default_calc_sets(struct irq_affinity *affd, unsigned int affvecs)

kernel/irq/irqdomain.c

@@ -31,7 +31,7 @@ struct irqchip_fwid {
 	struct fwnode_handle	fwnode;
 	unsigned int		type;
 	char			*name;
-	void *data;
+	phys_addr_t		*pa;
 };
 
 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
@@ -62,7 +62,8 @@ EXPORT_SYMBOL_GPL(irqchip_fwnode_ops);
  * domain struct.
  */
 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
-						const char *name, void *data)
+						const char *name,
+						phys_addr_t *pa)
 {
 	struct irqchip_fwid *fwid;
 	char *n;
@@ -77,7 +78,7 @@ struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
 		n = kasprintf(GFP_KERNEL, "%s-%d", name, id);
 		break;
 	default:
-		n = kasprintf(GFP_KERNEL, "irqchip@%p", data);
+		n = kasprintf(GFP_KERNEL, "irqchip@%pa", pa);
 		break;
 	}
 
@@ -89,7 +90,7 @@ struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
 
 	fwid->type = type;
 	fwid->name = n;
-	fwid->data = data;
+	fwid->pa = pa;
 	fwid->fwnode.ops = &irqchip_fwnode_ops;
 	return &fwid->fwnode;
 }
@@ -148,6 +149,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
 		switch (fwid->type) {
 		case IRQCHIP_FWNODE_NAMED:
 		case IRQCHIP_FWNODE_NAMED_ID:
+			domain->fwnode = fwnode;
 			domain->name = kstrdup(fwid->name, GFP_KERNEL);
 			if (!domain->name) {
 				kfree(domain);

kernel/irq/manage.c

@@ -23,7 +23,7 @@
 
 #include "internals.h"
 
-#ifdef CONFIG_IRQ_FORCED_THREADING
+#if defined(CONFIG_IRQ_FORCED_THREADING) && !defined(CONFIG_PREEMPT_RT)
 __read_mostly bool force_irqthreads;
 EXPORT_SYMBOL_GPL(force_irqthreads);