Merge branch 'for-6.15/amd_sfh' into for-linus

From: Mario Limonciello <mario.limonciello@amd.com>

Some platforms include a human presence detection (HPD) sensor. When
enabled and a user is detected a wake event will be emitted from the
sensor fusion hub that software can react to.

Example use cases are "wake from suspend on approach" or to "lock
when leaving".

This is currently enabled by default on supported systems, but users
can't control it. This essentially means that wake on approach is
enabled which is a really surprising behavior to users that don't
expect it.

Instead of defaulting to enabled add a sysfs knob that users can
use to enable the feature if desirable and set it to disabled by
default.

1 files changed, 58 insertions, 6 deletions

diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 2eed1ad958e9c..af0041df2b72e 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -478,7 +478,7 @@ static int __bpf_ld_imm64(struct bpf_insn insns[2], u8 reg, s64 imm64)
  * to overflow the field size of the native instruction, triggering
  * a branch conversion mechanism in some JITs.
  */
-static int __bpf_fill_max_jmp(struct bpf_test *self, int jmp, int imm)
+static int __bpf_fill_max_jmp(struct bpf_test *self, int jmp, int imm, bool alu32)
 {
 	struct bpf_insn *insns;
 	int len = S16_MAX + 5;
@@ -501,7 +501,7 @@ static int __bpf_fill_max_jmp(struct bpf_test *self, int jmp, int imm)
 		};
 		int op = ops[(i >> 1) % ARRAY_SIZE(ops)];
 
-		if (i & 1)
+		if ((i & 1) || alu32)
 			insns[i++] = BPF_ALU32_REG(op, R0, R1);
 		else
 			insns[i++] = BPF_ALU64_REG(op, R0, R1);
@@ -516,27 +516,47 @@ static int __bpf_fill_max_jmp(struct bpf_test *self, int jmp, int imm)
 }
 
 /* Branch taken by runtime decision */
+static int bpf_fill_max_jmp_taken_32(struct bpf_test *self)
+{
+	return __bpf_fill_max_jmp(self, BPF_JEQ, 1, true);
+}
+
 static int bpf_fill_max_jmp_taken(struct bpf_test *self)
 {
-	return __bpf_fill_max_jmp(self, BPF_JEQ, 1);
+	return __bpf_fill_max_jmp(self, BPF_JEQ, 1, false);
 }
 
 /* Branch not taken by runtime decision */
+static int bpf_fill_max_jmp_not_taken_32(struct bpf_test *self)
+{
+	return __bpf_fill_max_jmp(self, BPF_JEQ, 0, true);
+}
+
 static int bpf_fill_max_jmp_not_taken(struct bpf_test *self)
 {
-	return __bpf_fill_max_jmp(self, BPF_JEQ, 0);
+	return __bpf_fill_max_jmp(self, BPF_JEQ, 0, false);
 }
 
 /* Branch always taken, known at JIT time */
+static int bpf_fill_max_jmp_always_taken_32(struct bpf_test *self)
+{
+	return __bpf_fill_max_jmp(self, BPF_JGE, 0, true);
+}
+
 static int bpf_fill_max_jmp_always_taken(struct bpf_test *self)
 {
-	return __bpf_fill_max_jmp(self, BPF_JGE, 0);
+	return __bpf_fill_max_jmp(self, BPF_JGE, 0, false);
 }
 
 /* Branch never taken, known at JIT time */
+static int bpf_fill_max_jmp_never_taken_32(struct bpf_test *self)
+{
+	return __bpf_fill_max_jmp(self, BPF_JLT, 0, true);
+}
+
 static int bpf_fill_max_jmp_never_taken(struct bpf_test *self)
 {
-	return __bpf_fill_max_jmp(self, BPF_JLT, 0);
+	return __bpf_fill_max_jmp(self, BPF_JLT, 0, false);
 }
 
 /* ALU result computation used in tests */
@@ -14234,6 +14254,38 @@ static struct bpf_test tests[] = {
 	},
 	/* Conditional branch conversions */
 	{
+		"Long conditional jump: taken at runtime (32 bits)",
+		{ },
+		INTERNAL | FLAG_NO_DATA,
+		{ },
+		{ { 0, 1 } },
+		.fill_helper = bpf_fill_max_jmp_taken_32,
+	},
+	{
+		"Long conditional jump: not taken at runtime (32 bits)",
+		{ },
+		INTERNAL | FLAG_NO_DATA,
+		{ },
+		{ { 0, 2 } },
+		.fill_helper = bpf_fill_max_jmp_not_taken_32,
+	},
+	{
+		"Long conditional jump: always taken, known at JIT time (32 bits)",
+		{ },
+		INTERNAL | FLAG_NO_DATA,
+		{ },
+		{ { 0, 1 } },
+		.fill_helper = bpf_fill_max_jmp_always_taken_32,
+	},
+	{
+		"Long conditional jump: never taken, known at JIT time (32 bits)",
+		{ },
+		INTERNAL | FLAG_NO_DATA,
+		{ },
+		{ { 0, 2 } },
+		.fill_helper = bpf_fill_max_jmp_never_taken_32,
+	},
+	{
 		"Long conditional jump: taken at runtime",
 		{ },
 		INTERNAL | FLAG_NO_DATA,