Merge tag 'v6.1.151' into 6.1-main

This is the 6.1.151 stable release

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Author: frank-w

Makefile

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 1
-SUBLEVEL = 150
+SUBLEVEL = 151
 EXTRAVERSION =
 NAME = Curry Ramen
 

arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi

@@ -508,6 +508,7 @@
 	pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
 	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
 	vmmc-supply = <&reg_usdhc2_vmmc>;
+	vqmmc-supply = <&ldo5>;
 	bus-width = <4>;
 	status = "okay";
 };

arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts

@@ -977,6 +977,7 @@
 		reg = <0>;
 		m25p,fast-read;
 		spi-max-frequency = <10000000>;
+		vcc-supply = <&vcc_3v0>;
 	};
 };
 

arch/x86/include/asm/pgtable_64_types.h

@@ -40,6 +40,9 @@ static inline bool pgtable_l5_enabled(void)
 #define pgtable_l5_enabled() 0
 #endif /* CONFIG_X86_5LEVEL */
 
+#define ARCH_PAGE_TABLE_SYNC_MASK \
+	(pgtable_l5_enabled() ? PGTBL_PGD_MODIFIED : PGTBL_P4D_MODIFIED)
+
 extern unsigned int pgdir_shift;
 extern unsigned int ptrs_per_p4d;
 

arch/x86/mm/init_64.c

@@ -223,6 +223,24 @@ static void sync_global_pgds(unsigned long start, unsigned long end)
 		sync_global_pgds_l4(start, end);
 }
 
+/*
+ * Make kernel mappings visible in all page tables in the system.
+ * This is necessary except when the init task populates kernel mappings
+ * during the boot process. In that case, all processes originating from
+ * the init task copies the kernel mappings, so there is no issue.
+ * Otherwise, missing synchronization could lead to kernel crashes due
+ * to missing page table entries for certain kernel mappings.
+ *
+ * Synchronization is performed at the top level, which is the PGD in
+ * 5-level paging systems. But in 4-level paging systems, however,
+ * pgd_populate() is a no-op, so synchronization is done at the P4D level.
+ * sync_global_pgds() handles this difference between paging levels.
+ */
+void arch_sync_kernel_mappings(unsigned long start, unsigned long end)
+{
+	sync_global_pgds(start, end);
+}
+
 /*
  * NOTE: This function is marked __ref because it calls __init function
  * (alloc_bootmem_pages). It's safe to do it ONLY when after_bootmem == 0.

drivers/acpi/arm64/iort.c

@@ -928,8 +928,10 @@ static u32 *iort_rmr_alloc_sids(u32 *sids, u32 count, u32 id_start,
 
 	new_sids = krealloc_array(sids, count + new_count,
 				  sizeof(*new_sids), GFP_KERNEL);
-	if (!new_sids)
+	if (!new_sids) {
+		kfree(sids);
 		return NULL;
+	}
 
 	for (i = count; i < total_count; i++)
 		new_sids[i] = id_start++;

drivers/cpufreq/intel_pstate.c

@@ -172,7 +172,6 @@ struct vid_data {
  *			based on the MSR_IA32_MISC_ENABLE value and whether or
  *			not the maximum reported turbo P-state is different from
  *			the maximum reported non-turbo one.
- * @turbo_disabled_mf:	The @turbo_disabled value reflected by cpuinfo.max_freq.
  * @min_perf_pct:	Minimum capacity limit in percent of the maximum turbo
  *			P-state capacity.
  * @max_perf_pct:	Maximum capacity limit in percent of the maximum turbo
@@ -181,7 +180,6 @@ struct vid_data {
 struct global_params {
 	bool no_turbo;
 	bool turbo_disabled;
-	bool turbo_disabled_mf;
 	int max_perf_pct;
 	int min_perf_pct;
 };
@@ -559,16 +557,16 @@ static void intel_pstate_hybrid_hwp_adjust(struct cpudata *cpu)
 	cpu->pstate.min_pstate = intel_pstate_freq_to_hwp(cpu, freq);
 }
 
-static inline void update_turbo_state(void)
+static bool turbo_is_disabled(void)
 {
 	u64 misc_en;
-	struct cpudata *cpu;
 
-	cpu = all_cpu_data[0];
+	if (!cpu_feature_enabled(X86_FEATURE_IDA))
+		return true;
+
 	rdmsrl(MSR_IA32_MISC_ENABLE, misc_en);
-	global.turbo_disabled =
-		(misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE ||
-		 cpu->pstate.max_pstate == cpu->pstate.turbo_pstate);
+
+	return !!(misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE);
 }
 
 static int min_perf_pct_min(void)
@@ -1123,40 +1121,16 @@ static void intel_pstate_update_policies(void)
 static void __intel_pstate_update_max_freq(struct cpudata *cpudata,
 					   struct cpufreq_policy *policy)
 {
-	policy->cpuinfo.max_freq = global.turbo_disabled_mf ?
+	policy->cpuinfo.max_freq = global.turbo_disabled ?
 			cpudata->pstate.max_freq : cpudata->pstate.turbo_freq;
 	refresh_frequency_limits(policy);
 }
 
-static void intel_pstate_update_max_freq(unsigned int cpu)
-{
-	struct cpufreq_policy *policy = cpufreq_cpu_acquire(cpu);
-
-	if (!policy)
-		return;
-
-	__intel_pstate_update_max_freq(all_cpu_data[cpu], policy);
-
-	cpufreq_cpu_release(policy);
-}
-
 static void intel_pstate_update_limits(unsigned int cpu)
 {
 	mutex_lock(&intel_pstate_driver_lock);
 
-	update_turbo_state();
-	/*
-	 * If turbo has been turned on or off globally, policy limits for
-	 * all CPUs need to be updated to reflect that.
-	 */
-	if (global.turbo_disabled_mf != global.turbo_disabled) {
-		global.turbo_disabled_mf = global.turbo_disabled;
-		arch_set_max_freq_ratio(global.turbo_disabled);
-		for_each_possible_cpu(cpu)
-			intel_pstate_update_max_freq(cpu);
-	} else {
-		cpufreq_update_policy(cpu);
-	}
+	cpufreq_update_policy(cpu);
 
 	mutex_unlock(&intel_pstate_driver_lock);
 }
@@ -1256,11 +1230,7 @@ static ssize_t show_no_turbo(struct kobject *kobj,
 		return -EAGAIN;
 	}
 
-	update_turbo_state();
-	if (global.turbo_disabled)
-		ret = sprintf(buf, "%u\n", global.turbo_disabled);
-	else
-		ret = sprintf(buf, "%u\n", global.no_turbo);
+	ret = sprintf(buf, "%u\n", global.no_turbo);
 
 	mutex_unlock(&intel_pstate_driver_lock);
 
@@ -1271,32 +1241,39 @@ static ssize_t store_no_turbo(struct kobject *a, struct kobj_attribute *b,
 			      const char *buf, size_t count)
 {
 	unsigned int input;
-	int ret;
+	bool no_turbo;
 
-	ret = sscanf(buf, "%u", &input);
-	if (ret != 1)
+	if (sscanf(buf, "%u", &input) != 1)
 		return -EINVAL;
 
 	mutex_lock(&intel_pstate_driver_lock);
 
 	if (!intel_pstate_driver) {
-		mutex_unlock(&intel_pstate_driver_lock);
-		return -EAGAIN;
+		count = -EAGAIN;
+		goto unlock_driver;
 	}
 
-	mutex_lock(&intel_pstate_limits_lock);
+	no_turbo = !!clamp_t(int, input, 0, 1);
 
-	update_turbo_state();
-	if (global.turbo_disabled) {
-		pr_notice_once("Turbo disabled by BIOS or unavailable on processor\n");
-		mutex_unlock(&intel_pstate_limits_lock);
-		mutex_unlock(&intel_pstate_driver_lock);
-		return -EPERM;
+	WRITE_ONCE(global.turbo_disabled, turbo_is_disabled());
+	if (global.turbo_disabled && !no_turbo) {
+		pr_notice("Turbo disabled by BIOS or unavailable on processor\n");
+		count = -EPERM;
+		if (global.no_turbo)
+			goto unlock_driver;
+		else
+			no_turbo = 1;
 	}
 
-	global.no_turbo = clamp_t(int, input, 0, 1);
+	if (no_turbo == global.no_turbo) {
+		goto unlock_driver;
+	}
 
-	if (global.no_turbo) {
+	WRITE_ONCE(global.no_turbo, no_turbo);
+
+	mutex_lock(&intel_pstate_limits_lock);
+
+	if (no_turbo) {
 		struct cpudata *cpu = all_cpu_data[0];
 		int pct = cpu->pstate.max_pstate * 100 / cpu->pstate.turbo_pstate;
 
@@ -1308,8 +1285,9 @@ static ssize_t store_no_turbo(struct kobject *a, struct kobj_attribute *b,
 	mutex_unlock(&intel_pstate_limits_lock);
 
 	intel_pstate_update_policies();
-	arch_set_max_freq_ratio(global.no_turbo);
+	arch_set_max_freq_ratio(no_turbo);
 
+unlock_driver:
 	mutex_unlock(&intel_pstate_driver_lock);
 
 	return count;
@@ -1757,7 +1735,7 @@ static u64 atom_get_val(struct cpudata *cpudata, int pstate)
 	u32 vid;
 
 	val = (u64)pstate << 8;
-	if (global.no_turbo && !global.turbo_disabled)
+	if (READ_ONCE(global.no_turbo) && !READ_ONCE(global.turbo_disabled))
 		val |= (u64)1 << 32;
 
 	vid_fp = cpudata->vid.min + mul_fp(
@@ -1927,7 +1905,7 @@ static u64 core_get_val(struct cpudata *cpudata, int pstate)
 	u64 val;
 
 	val = (u64)pstate << 8;
-	if (global.no_turbo && !global.turbo_disabled)
+	if (READ_ONCE(global.no_turbo) && !READ_ONCE(global.turbo_disabled))
 		val |= (u64)1 << 32;
 
 	return val;
@@ -1988,14 +1966,6 @@ static void intel_pstate_set_min_pstate(struct cpudata *cpu)
 	intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
 }
 
-static void intel_pstate_max_within_limits(struct cpudata *cpu)
-{
-	int pstate = max(cpu->pstate.min_pstate, cpu->max_perf_ratio);
-
-	update_turbo_state();
-	intel_pstate_set_pstate(cpu, pstate);
-}
-
 static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
 {
 	int perf_ctl_max_phys = pstate_funcs.get_max_physical(cpu->cpu);
@@ -2221,7 +2191,7 @@ static inline int32_t get_target_pstate(struct cpudata *cpu)
 
 	sample->busy_scaled = busy_frac * 100;
 
-	target = global.no_turbo || global.turbo_disabled ?
+	target = READ_ONCE(global.no_turbo) ?
 			cpu->pstate.max_pstate : cpu->pstate.turbo_pstate;
 	target += target >> 2;
 	target = mul_fp(target, busy_frac);
@@ -2265,8 +2235,6 @@ static void intel_pstate_adjust_pstate(struct cpudata *cpu)
 	struct sample *sample;
 	int target_pstate;
 
-	update_turbo_state();
-
 	target_pstate = get_target_pstate(cpu);
 	target_pstate = intel_pstate_prepare_request(cpu, target_pstate);
 	trace_cpu_frequency(target_pstate * cpu->pstate.scaling, cpu->cpu);
@@ -2492,7 +2460,7 @@ static void intel_pstate_clear_update_util_hook(unsigned int cpu)
 
 static int intel_pstate_get_max_freq(struct cpudata *cpu)
 {
-	return global.turbo_disabled || global.no_turbo ?
+	return READ_ONCE(global.no_turbo) ?
 			cpu->pstate.max_freq : cpu->pstate.turbo_freq;
 }
 
@@ -2577,12 +2545,14 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
 	intel_pstate_update_perf_limits(cpu, policy->min, policy->max);
 
 	if (cpu->policy == CPUFREQ_POLICY_PERFORMANCE) {
+		int pstate = max(cpu->pstate.min_pstate, cpu->max_perf_ratio);
+
 		/*
 		 * NOHZ_FULL CPUs need this as the governor callback may not
 		 * be invoked on them.
 		 */
 		intel_pstate_clear_update_util_hook(policy->cpu);
-		intel_pstate_max_within_limits(cpu);
+		intel_pstate_set_pstate(cpu, pstate);
 	} else {
 		intel_pstate_set_update_util_hook(policy->cpu);
 	}
@@ -2625,10 +2595,9 @@ static void intel_pstate_verify_cpu_policy(struct cpudata *cpu,
 {
 	int max_freq;
 
-	update_turbo_state();
 	if (hwp_active) {
 		intel_pstate_get_hwp_cap(cpu);
-		max_freq = global.no_turbo || global.turbo_disabled ?
+		max_freq = READ_ONCE(global.no_turbo) ?
 				cpu->pstate.max_freq : cpu->pstate.turbo_freq;
 	} else {
 		max_freq = intel_pstate_get_max_freq(cpu);
@@ -2722,8 +2691,6 @@ static int __intel_pstate_cpu_init(struct cpufreq_policy *policy)
 
 	/* cpuinfo and default policy values */
 	policy->cpuinfo.min_freq = cpu->pstate.min_freq;
-	update_turbo_state();
-	global.turbo_disabled_mf = global.turbo_disabled;
 	policy->cpuinfo.max_freq = global.turbo_disabled ?
 			cpu->pstate.max_freq : cpu->pstate.turbo_freq;
 
@@ -2889,8 +2856,6 @@ static int intel_cpufreq_target(struct cpufreq_policy *policy,
 	struct cpufreq_freqs freqs;
 	int target_pstate;
 
-	update_turbo_state();
-
 	freqs.old = policy->cur;
 	freqs.new = target_freq;
 
@@ -2912,8 +2877,6 @@ static unsigned int intel_cpufreq_fast_switch(struct cpufreq_policy *policy,
 	struct cpudata *cpu = all_cpu_data[policy->cpu];
 	int target_pstate;
 
-	update_turbo_state();
-
 	target_pstate = intel_pstate_freq_to_hwp(cpu, target_freq);
 
 	target_pstate = intel_cpufreq_update_pstate(policy, target_pstate, true);
@@ -2931,7 +2894,6 @@ static void intel_cpufreq_adjust_perf(unsigned int cpunum,
 	int old_pstate = cpu->pstate.current_pstate;
 	int cap_pstate, min_pstate, max_pstate, target_pstate;
 
-	update_turbo_state();
 	cap_pstate = global.turbo_disabled ? HWP_GUARANTEED_PERF(hwp_cap) :
 					     HWP_HIGHEST_PERF(hwp_cap);
 
@@ -3121,6 +3083,10 @@ static int intel_pstate_register_driver(struct cpufreq_driver *driver)
 
 	memset(&global, 0, sizeof(global));
 	global.max_perf_pct = 100;
+	global.turbo_disabled = turbo_is_disabled();
+	global.no_turbo = global.turbo_disabled;
+
+	arch_set_max_freq_ratio(global.turbo_disabled);
 
 	intel_pstate_driver = driver;
 	ret = cpufreq_register_driver(intel_pstate_driver);

drivers/dma/mediatek/mtk-cqdma.c

@@ -421,15 +421,11 @@ static struct virt_dma_desc *mtk_cqdma_find_active_desc(struct dma_chan *c,
 {
 	struct mtk_cqdma_vchan *cvc = to_cqdma_vchan(c);
 	struct virt_dma_desc *vd;
-	unsigned long flags;
 
-	spin_lock_irqsave(&cvc->pc->lock, flags);
 	list_for_each_entry(vd, &cvc->pc->queue, node)
 		if (vd->tx.cookie == cookie) {
-			spin_unlock_irqrestore(&cvc->pc->lock, flags);
 			return vd;
 		}
-	spin_unlock_irqrestore(&cvc->pc->lock, flags);
 
 	list_for_each_entry(vd, &cvc->vc.desc_issued, node)
 		if (vd->tx.cookie == cookie)
@@ -453,9 +449,11 @@ static enum dma_status mtk_cqdma_tx_status(struct dma_chan *c,
 	if (ret == DMA_COMPLETE || !txstate)
 		return ret;
 
-	spin_lock_irqsave(&cvc->vc.lock, flags);
+	spin_lock_irqsave(&cvc->pc->lock, flags);
+	spin_lock(&cvc->vc.lock);
 	vd = mtk_cqdma_find_active_desc(c, cookie);
-	spin_unlock_irqrestore(&cvc->vc.lock, flags);
+	spin_unlock(&cvc->vc.lock);
+	spin_unlock_irqrestore(&cvc->pc->lock, flags);
 
 	if (vd) {
 		cvd = to_cqdma_vdesc(vd);