Merge tag 'v5.10.27' into 5.10

This is the 5.10.27 stable release

Documentation/virt/kvm/api.rst

@@ -4810,8 +4810,10 @@ If an MSR access is not permitted through the filtering, it generates a
 allows user space to deflect and potentially handle various MSR accesses
 into user space.
 
-If a vCPU is in running state while this ioctl is invoked, the vCPU may
-experience inconsistent filtering behavior on MSR accesses.
+Note, invoking this ioctl with a vCPU is running is inherently racy.  However,
+KVM does guarantee that vCPUs will see either the previous filter or the new
+filter, e.g. MSRs with identical settings in both the old and new filter will
+have deterministic behavior.
 
 
 5. The kvm_run structure

Makefile

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 5
 PATCHLEVEL = 10
-SUBLEVEL = 26
+SUBLEVEL = 27
 EXTRAVERSION =
 NAME = Dare mighty things
 
@@ -265,7 +265,8 @@ no-dot-config-targets := $(clean-targets) \
 			 $(version_h) headers headers_% archheaders archscripts \
 			 %asm-generic kernelversion %src-pkg dt_binding_check \
 			 outputmakefile
-no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease
+no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \
+			  image_name
 single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/
 
 config-build	:=

arch/arm/boot/dts/at91-sam9x60ek.dts

@@ -334,14 +334,6 @@
 };
 
 &pinctrl {
-	atmel,mux-mask = <
-			 /*	A	B	C	*/
-			 0xFFFFFE7F 0xC0E0397F 0xEF00019D	/* pioA */
-			 0x03FFFFFF 0x02FC7E68 0x00780000	/* pioB */
-			 0xffffffff 0xF83FFFFF 0xB800F3FC	/* pioC */
-			 0x003FFFFF 0x003F8000 0x00000000	/* pioD */
-			 >;
-
 	adc {
 		pinctrl_adc_default: adc_default {
 			atmel,pins = <AT91_PIOB 15 AT91_PERIPH_A AT91_PINCTRL_NONE>;

arch/arm/boot/dts/at91-sama5d27_som1.dtsi

@@ -84,8 +84,8 @@
 				pinctrl-0 = <&pinctrl_macb0_default>;
 				phy-mode = "rmii";
 
-				ethernet-phy@0 {
-					reg = <0x0>;
+				ethernet-phy@7 {
+					reg = <0x7>;
 					interrupt-parent = <&pioA>;
 					interrupts = <PIN_PD31 IRQ_TYPE_LEVEL_LOW>;
 					pinctrl-names = "default";

arch/arm/boot/dts/imx6ull-myir-mys-6ulx-eval.dts

@@ -14,5 +14,6 @@
 };
 
 &gpmi {
+	fsl,use-minimum-ecc;
 	status = "okay";
 };

arch/arm/boot/dts/sam9x60.dtsi

@@ -606,6 +606,15 @@
 				compatible = "microchip,sam9x60-pinctrl", "atmel,at91sam9x5-pinctrl", "atmel,at91rm9200-pinctrl", "simple-bus";
 				ranges = <0xfffff400 0xfffff400 0x800>;
 
+				/* mux-mask corresponding to sam9x60 SoC in TFBGA228L package */
+				atmel,mux-mask = <
+						 /*	A	B	C	*/
+						 0xffffffff 0xffe03fff 0xef00019d	/* pioA */
+						 0x03ffffff 0x02fc7e7f 0x00780000	/* pioB */
+						 0xffffffff 0xffffffff 0xf83fffff	/* pioC */
+						 0x003fffff 0x003f8000 0x00000000	/* pioD */
+						 >;
+
 				pioA: gpio@fffff400 {
 					compatible = "microchip,sam9x60-gpio", "atmel,at91sam9x5-gpio", "atmel,at91rm9200-gpio";
 					reg = <0xfffff400 0x200>;

arch/arm/mach-omap2/sr_device.c

@@ -88,34 +88,26 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data,
 
 extern struct omap_sr_data omap_sr_pdata[];
 
-static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
+static int __init sr_init_by_name(const char *name, const char *voltdm)
 {
 	struct omap_sr_data *sr_data = NULL;
 	struct omap_volt_data *volt_data;
-	struct omap_smartreflex_dev_attr *sr_dev_attr;
 	static int i;
 
-	if (!strncmp(oh->name, "smartreflex_mpu_iva", 20) ||
-	    !strncmp(oh->name, "smartreflex_mpu", 16))
+	if (!strncmp(name, "smartreflex_mpu_iva", 20) ||
+	    !strncmp(name, "smartreflex_mpu", 16))
 		sr_data = &omap_sr_pdata[OMAP_SR_MPU];
-	else if (!strncmp(oh->name, "smartreflex_core", 17))
+	else if (!strncmp(name, "smartreflex_core", 17))
 		sr_data = &omap_sr_pdata[OMAP_SR_CORE];
-	else if (!strncmp(oh->name, "smartreflex_iva", 16))
+	else if (!strncmp(name, "smartreflex_iva", 16))
 		sr_data = &omap_sr_pdata[OMAP_SR_IVA];
 
 	if (!sr_data) {
-		pr_err("%s: Unknown instance %s\n", __func__, oh->name);
+		pr_err("%s: Unknown instance %s\n", __func__, name);
 		return -EINVAL;
 	}
 
-	sr_dev_attr = (struct omap_smartreflex_dev_attr *)oh->dev_attr;
-	if (!sr_dev_attr || !sr_dev_attr->sensor_voltdm_name) {
-		pr_err("%s: No voltage domain specified for %s. Cannot initialize\n",
-		       __func__, oh->name);
-		goto exit;
-	}
-
-	sr_data->name = oh->name;
+	sr_data->name = name;
 	if (cpu_is_omap343x())
 		sr_data->ip_type = 1;
 	else
@@ -136,10 +128,10 @@ static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
 		}
 	}
 
-	sr_data->voltdm = voltdm_lookup(sr_dev_attr->sensor_voltdm_name);
+	sr_data->voltdm = voltdm_lookup(voltdm);
 	if (!sr_data->voltdm) {
 		pr_err("%s: Unable to get voltage domain pointer for VDD %s\n",
-			__func__, sr_dev_attr->sensor_voltdm_name);
+			__func__, voltdm);
 		goto exit;
 	}
 
@@ -160,6 +152,20 @@ static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
 	return 0;
 }
 
+static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
+{
+	struct omap_smartreflex_dev_attr *sr_dev_attr;
+
+	sr_dev_attr = (struct omap_smartreflex_dev_attr *)oh->dev_attr;
+	if (!sr_dev_attr || !sr_dev_attr->sensor_voltdm_name) {
+		pr_err("%s: No voltage domain specified for %s. Cannot initialize\n",
+		       __func__, oh->name);
+		return 0;
+	}
+
+	return sr_init_by_name(oh->name, sr_dev_attr->sensor_voltdm_name);
+}
+
 /*
  * API to be called from board files to enable smartreflex
  * autocompensation at init.
@@ -169,7 +175,42 @@ void __init omap_enable_smartreflex_on_init(void)
 	sr_enable_on_init = true;
 }
 
+static const char * const omap4_sr_instances[] = {
+	"mpu",
+	"iva",
+	"core",
+};
+
+static const char * const dra7_sr_instances[] = {
+	"mpu",
+	"core",
+};
+
 int __init omap_devinit_smartreflex(void)
 {
+	const char * const *sr_inst;
+	int i, nr_sr = 0;
+
+	if (soc_is_omap44xx()) {
+		sr_inst = omap4_sr_instances;
+		nr_sr = ARRAY_SIZE(omap4_sr_instances);
+
+	} else if (soc_is_dra7xx()) {
+		sr_inst = dra7_sr_instances;
+		nr_sr = ARRAY_SIZE(dra7_sr_instances);
+	}
+
+	if (nr_sr) {
+		const char *name, *voltdm;
+
+		for (i = 0; i < nr_sr; i++) {
+			name = kasprintf(GFP_KERNEL, "smartreflex_%s", sr_inst[i]);
+			voltdm = sr_inst[i];
+			sr_init_by_name(name, voltdm);
+		}
+
+		return 0;
+	}
+
 	return omap_hwmod_for_each_by_class("smartreflex", sr_dev_init, NULL);
 }

arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi

@@ -192,6 +192,7 @@
 			ranges = <0x0 0x00 0x1700000 0x100000>;
 			reg = <0x00 0x1700000 0x0 0x100000>;
 			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
+			dma-coherent;
 
 			sec_jr0: jr@10000 {
 				compatible = "fsl,sec-v5.4-job-ring",

arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi

@@ -322,6 +322,7 @@
 			ranges = <0x0 0x00 0x1700000 0x100000>;
 			reg = <0x00 0x1700000 0x0 0x100000>;
 			interrupts = <0 75 0x4>;
+			dma-coherent;
 
 			sec_jr0: jr@10000 {
 				compatible = "fsl,sec-v5.4-job-ring",

arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi

@@ -325,6 +325,7 @@
 			ranges = <0x0 0x00 0x1700000 0x100000>;
 			reg = <0x00 0x1700000 0x0 0x100000>;
 			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
+			dma-coherent;
 
 			sec_jr0: jr@10000 {
 				compatible = "fsl,sec-v5.4-job-ring",

arch/arm64/kernel/crash_dump.c

@@ -64,5 +64,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
 ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos)
 {
 	memcpy(buf, phys_to_virt((phys_addr_t)*ppos), count);
+	*ppos += count;
+
 	return count;
 }

arch/arm64/kernel/stacktrace.c

@@ -199,17 +199,18 @@ void show_stack(struct task_struct *tsk, unsigned long *sp, const char *loglvl)
 
 #ifdef CONFIG_STACKTRACE
 
-void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie,
-		     struct task_struct *task, struct pt_regs *regs)
+noinline void arch_stack_walk(stack_trace_consume_fn consume_entry,
+			      void *cookie, struct task_struct *task,
+			      struct pt_regs *regs)
 {
 	struct stackframe frame;
 
 	if (regs)
 		start_backtrace(&frame, regs->regs[29], regs->pc);
 	else if (task == current)
 		start_backtrace(&frame,
-				(unsigned long)__builtin_frame_address(0),
-				(unsigned long)arch_stack_walk);
+				(unsigned long)__builtin_frame_address(1),
+				(unsigned long)__builtin_return_address(0));
 	else
 		start_backtrace(&frame, thread_saved_fp(task),
 				thread_saved_pc(task));

arch/ia64/include/asm/syscall.h

@@ -32,7 +32,7 @@ static inline void syscall_rollback(struct task_struct *task,
 static inline long syscall_get_error(struct task_struct *task,
 				     struct pt_regs *regs)
 {
-	return regs->r10 == -1 ? regs->r8:0;
+	return regs->r10 == -1 ? -regs->r8:0;
 }
 
 static inline long syscall_get_return_value(struct task_struct *task,

arch/ia64/kernel/ptrace.c

@@ -2010,27 +2010,39 @@ static void syscall_get_set_args_cb(struct unw_frame_info *info, void *data)
 {
 	struct syscall_get_set_args *args = data;
 	struct pt_regs *pt = args->regs;
-	unsigned long *krbs, cfm, ndirty;
+	unsigned long *krbs, cfm, ndirty, nlocals, nouts;
 	int i, count;
 
 	if (unw_unwind_to_user(info) < 0)
 		return;
 
+	/*
+	 * We get here via a few paths:
+	 * - break instruction: cfm is shared with caller.
+	 *   syscall args are in out= regs, locals are non-empty.
+	 * - epsinstruction: cfm is set by br.call
+	 *   locals don't exist.
+	 *
+	 * For both cases argguments are reachable in cfm.sof - cfm.sol.
+	 * CFM: [ ... | sor: 17..14 | sol : 13..7 | sof : 6..0 ]
+	 */
 	cfm = pt->cr_ifs;
+	nlocals = (cfm >> 7) & 0x7f; /* aka sol */
+	nouts = (cfm & 0x7f) - nlocals; /* aka sof - sol */
 	krbs = (unsigned long *)info->task + IA64_RBS_OFFSET/8;
 	ndirty = ia64_rse_num_regs(krbs, krbs + (pt->loadrs >> 19));
 
 	count = 0;
 	if (in_syscall(pt))
-		count = min_t(int, args->n, cfm & 0x7f);
+		count = min_t(int, args->n, nouts);
 
+	/* Iterate over outs. */
 	for (i = 0; i < count; i++) {
+		int j = ndirty + nlocals + i + args->i;
 		if (args->rw)
-			*ia64_rse_skip_regs(krbs, ndirty + i + args->i) =
-				args->args[i];
+			*ia64_rse_skip_regs(krbs, j) = args->args[i];
 		else
-			args->args[i] = *ia64_rse_skip_regs(krbs,
-				ndirty + i + args->i);
+			args->args[i] = *ia64_rse_skip_regs(krbs, j);
 	}
 
 	if (!args->rw) {

arch/powerpc/include/asm/dcr-native.h

@@ -53,8 +53,8 @@ static inline void mtdcrx(unsigned int reg, unsigned int val)
 #define mfdcr(rn)						\
 	({unsigned int rval;					\
 	if (__builtin_constant_p(rn) && rn < 1024)		\
-		asm volatile("mfdcr %0," __stringify(rn)	\
-		              : "=r" (rval));			\
+		asm volatile("mfdcr %0, %1" : "=r" (rval)	\
+			      : "n" (rn));			\
 	else if (likely(cpu_has_feature(CPU_FTR_INDEXED_DCR)))	\
 		rval = mfdcrx(rn);				\
 	else							\
@@ -64,8 +64,8 @@ static inline void mtdcrx(unsigned int reg, unsigned int val)
 #define mtdcr(rn, v)						\
 do {								\
 	if (__builtin_constant_p(rn) && rn < 1024)		\
-		asm volatile("mtdcr " __stringify(rn) ",%0"	\
-			      : : "r" (v)); 			\
+		asm volatile("mtdcr %0, %1"			\
+			      : : "n" (rn), "r" (v));		\
 	else if (likely(cpu_has_feature(CPU_FTR_INDEXED_DCR)))	\
 		mtdcrx(rn, v);					\
 	else							\

arch/sparc/kernel/traps_64.c

@@ -275,14 +275,13 @@ bool is_no_fault_exception(struct pt_regs *regs)
 			asi = (regs->tstate >> 24); /* saved %asi       */
 		else
 			asi = (insn >> 5);	    /* immediate asi    */
-		if ((asi & 0xf2) == ASI_PNF) {
-			if (insn & 0x1000000) {     /* op3[5:4]=3       */
-				handle_ldf_stq(insn, regs);
-				return true;
-			} else if (insn & 0x200000) { /* op3[2], stores */
+		if ((asi & 0xf6) == ASI_PNF) {
+			if (insn & 0x200000)        /* op3[2], stores   */
 				return false;
-			}
-			handle_ld_nf(insn, regs);
+			if (insn & 0x1000000)       /* op3[5:4]=3 (fp)  */
+				handle_ldf_stq(insn, regs);
+			else
+				handle_ld_nf(insn, regs);
 			return true;
 		}
 	}

arch/x86/include/asm/kvm_host.h

@@ -890,6 +890,12 @@ enum kvm_irqchip_mode {
 	KVM_IRQCHIP_SPLIT,        /* created with KVM_CAP_SPLIT_IRQCHIP */
 };
 
+struct kvm_x86_msr_filter {
+	u8 count;
+	bool default_allow:1;
+	struct msr_bitmap_range ranges[16];
+};
+
 #define APICV_INHIBIT_REASON_DISABLE    0
 #define APICV_INHIBIT_REASON_HYPERV     1
 #define APICV_INHIBIT_REASON_NESTED     2
@@ -985,14 +991,12 @@ struct kvm_arch {
 	bool guest_can_read_msr_platform_info;
 	bool exception_payload_enabled;
 
+	bool bus_lock_detection_enabled;
+
 	/* Deflect RDMSR and WRMSR to user space when they trigger a #GP */
 	u32 user_space_msr_mask;
 
-	struct {
-		u8 count;
-		bool default_allow:1;
-		struct msr_bitmap_range ranges[16];
-	} msr_filter;
+	struct kvm_x86_msr_filter __rcu *msr_filter;
 
 	struct kvm_pmu_event_filter *pmu_event_filter;
 	struct task_struct *nx_lpage_recovery_thread;

arch/x86/include/asm/static_call.h

@@ -37,4 +37,11 @@
 #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)			\
 	__ARCH_DEFINE_STATIC_CALL_TRAMP(name, "ret; nop; nop; nop; nop")
 
+
+#define ARCH_ADD_TRAMP_KEY(name)					\
+	asm(".pushsection .static_call_tramp_key, \"a\"		\n"	\
+	    ".long " STATIC_CALL_TRAMP_STR(name) " - .		\n"	\
+	    ".long " STATIC_CALL_KEY_STR(name) " - .		\n"	\
+	    ".popsection					\n")
+
 #endif /* _ASM_STATIC_CALL_H */