Merge tag 'v5.4.147' into 5.4-2.3.x-imx

This is the 5.4.147 stable release

Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>

5 files changed, 42 insertions, 7 deletions

diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index 22f070085971..ee10a9f06b97 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -194,6 +194,13 @@ struct bpf_idx_pair {
 	u32 idx;
 };
 
+struct bpf_id_pair {
+	u32 old;
+	u32 cur;
+};
+
+/* Maximum number of register states that can exist at once */
+#define BPF_ID_MAP_SIZE (MAX_BPF_REG + MAX_BPF_STACK / BPF_REG_SIZE)
 #define MAX_CALL_FRAMES 8
 struct bpf_verifier_state {
 	/* call stack tracking */
@@ -301,8 +308,8 @@ struct bpf_insn_aux_data {
 		};
 	};
 	int ctx_field_size; /* the ctx field size for load insn, maybe 0 */
-	int sanitize_stack_off; /* stack slot to be cleared */
 	bool seen; /* this insn was processed by the verifier */
+	bool sanitize_stack_spill; /* subject to Spectre v4 sanitation */
 	bool zext_dst; /* this insn zero extends dst reg */
 	u8 alu_state; /* used in combination with alu_limit */
 	bool prune_point;
@@ -364,12 +371,14 @@ struct bpf_verifier_env {
 	struct bpf_map *used_maps[MAX_USED_MAPS]; /* array of map's used by eBPF program */
 	u32 used_map_cnt;		/* number of used maps */
 	u32 id_gen;			/* used to generate unique reg IDs */
+	bool explore_alu_limits;
 	bool allow_ptr_leaks;
 	bool seen_direct_write;
 	struct bpf_insn_aux_data *insn_aux_data; /* array of per-insn state */
 	const struct bpf_line_info *prev_linfo;
 	struct bpf_verifier_log log;
 	struct bpf_subprog_info subprog_info[BPF_MAX_SUBPROGS + 1];
+	struct bpf_id_pair idmap_scratch[BPF_ID_MAP_SIZE];
 	struct {
 		int *insn_state;
 		int *insn_stack;
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h
index 73f8c3cb9588..9ee6ccc18424 100644
--- a/include/linux/energy_model.h
+++ b/include/linux/energy_model.h
@@ -42,6 +42,22 @@ struct em_perf_domain {
 
 #define EM_CPU_MAX_POWER 0xFFFF
 
+/*
+ * Increase resolution of energy estimation calculations for 64-bit
+ * architectures. The extra resolution improves decision made by EAS for the
+ * task placement when two Performance Domains might provide similar energy
+ * estimation values (w/o better resolution the values could be equal).
+ *
+ * We increase resolution only if we have enough bits to allow this increased
+ * resolution (i.e. 64-bit). The costs for increasing resolution when 32-bit
+ * are pretty high and the returns do not justify the increased costs.
+ */
+#ifdef CONFIG_64BIT
+#define em_scale_power(p) ((p) * 1000)
+#else
+#define em_scale_power(p) (p)
+#endif
+
 struct em_data_callback {
 	/**
 	 * active_power() - Provide power at the next capacity state of a CPU
diff --git a/include/linux/filter.h b/include/linux/filter.h
index c53e2fe3c8f7..c4f89340f498 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -68,6 +68,11 @@ struct ctl_table_header;
 /* unused opcode to mark call to interpreter with arguments */
 #define BPF_CALL_ARGS	0xe0
 
+/* unused opcode to mark speculation barrier for mitigating
+ * Speculative Store Bypass
+ */
+#define BPF_NOSPEC	0xc0
+
 /* As per nm, we expose JITed images as text (code) section for
  * kallsyms. That way, tools like perf can find it to match
  * addresses.
@@ -368,6 +373,16 @@ static inline bool insn_is_zext(const struct bpf_insn *insn)
 		.off   = 0,					\
 		.imm   = 0 })
 
+/* Speculation barrier */
+
+#define BPF_ST_NOSPEC()						\
+	((struct bpf_insn) {					\
+		.code  = BPF_ST | BPF_NOSPEC,			\
+		.dst_reg = 0,					\
+		.src_reg = 0,					\
+		.off   = 0,					\
+		.imm   = 0 })
+
 /* Internal classic blocks for direct assignment */
 
 #define __BPF_STMT(CODE, K)					\
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 1f98b52118f0..48be92aded5e 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -317,16 +317,12 @@ struct clock_event_device;
 
 extern void hrtimer_interrupt(struct clock_event_device *dev);
 
-extern void clock_was_set_delayed(void);
-
 extern unsigned int hrtimer_resolution;
 
 #else
 
 #define hrtimer_resolution	(unsigned int)LOW_RES_NSEC
 
-static inline void clock_was_set_delayed(void) { }
-
 #endif
 
 static inline ktime_t
@@ -350,7 +346,6 @@ hrtimer_expires_remaining_adjusted(const struct hrtimer *timer)
 						    timer->base->get_time());
 }
 
-extern void clock_was_set(void);
 #ifdef CONFIG_TIMERFD
 extern void timerfd_clock_was_set(void);
 #else
diff --git a/include/linux/power/max17042_battery.h b/include/linux/power/max17042_battery.h
index 4badd5322949..2f9ff5017f12 100644
--- a/include/linux/power/max17042_battery.h
+++ b/include/linux/power/max17042_battery.h
@@ -69,7 +69,7 @@ enum max17042_register {
 	MAX17042_RelaxCFG	= 0x2A,
 	MAX17042_MiscCFG	= 0x2B,
 	MAX17042_TGAIN		= 0x2C,
-	MAx17042_TOFF		= 0x2D,
+	MAX17042_TOFF		= 0x2D,
 	MAX17042_CGAIN		= 0x2E,
 	MAX17042_COFF		= 0x2F,