linux-kernel - [tip:x86/microcode] x86/microcode/AMD: Move verify_patch

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Date:   Mon, 19 Nov 2018 02:14:04 -0800
From:   tip-bot for Borislav Petkov <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     bp@...e.de, tglx@...utronix.de, linux-kernel@...r.kernel.org,
        mingo@...nel.org, hpa@...or.com
Subject: [tip:x86/microcode] x86/microcode/AMD: Move verify_patch_size() up
 in the file

Commit-ID:  3974b68114fed3735f623931e673538d8ab92d26
Gitweb:     https://git.kernel.org/tip/3974b68114fed3735f623931e673538d8ab92d26
Author:     Borislav Petkov <bp@...e.de>
AuthorDate: Thu, 28 Jun 2018 19:44:29 +0200
Committer:  Borislav Petkov <bp@...e.de>
CommitDate: Mon, 19 Nov 2018 10:45:08 +0100

x86/microcode/AMD: Move verify_patch_size() up in the file

... to enable later improvements.

No functional changes.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: x86@...nel.org
Link: https://lkml.kernel.org/r/20181107170218.7596-4-bp@alien8.de
---
 arch/x86/kernel/cpu/microcode/amd.c | 82 ++++++++++++++++++-------------------
 1 file changed, 41 insertions(+), 41 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 36aeb01b3ae8..f8d60cb9bb9a 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -174,6 +174,47 @@ static bool verify_patch_section(const u8 *buf, size_t buf_size, bool early)
 	return true;
 }
 
+/*
+ * Check whether the passed remaining file @size is large enough to contain a
+ * patch of the indicated @patch_size (and also whether this size does not
+ * exceed the per-family maximum).
+ */
+static unsigned int verify_patch_size(u8 family, u32 patch_size, unsigned int size)
+{
+	u32 max_size;
+
+#define F1XH_MPB_MAX_SIZE 2048
+#define F14H_MPB_MAX_SIZE 1824
+#define F15H_MPB_MAX_SIZE 4096
+#define F16H_MPB_MAX_SIZE 3458
+#define F17H_MPB_MAX_SIZE 3200
+
+	switch (family) {
+	case 0x14:
+		max_size = F14H_MPB_MAX_SIZE;
+		break;
+	case 0x15:
+		max_size = F15H_MPB_MAX_SIZE;
+		break;
+	case 0x16:
+		max_size = F16H_MPB_MAX_SIZE;
+		break;
+	case 0x17:
+		max_size = F17H_MPB_MAX_SIZE;
+		break;
+	default:
+		max_size = F1XH_MPB_MAX_SIZE;
+		break;
+	}
+
+	if (patch_size > min_t(u32, size, max_size)) {
+		pr_err("patch size mismatch\n");
+		return 0;
+	}
+
+	return patch_size;
+}
+
 /*
  * This scans the ucode blob for the proper container as we can have multiple
  * containers glued together. Returns the equivalence ID from the equivalence
@@ -562,47 +603,6 @@ static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig)
 	return 0;
 }
 
-/*
- * Check whether the passed remaining file @size is large enough to contain a
- * patch of the indicated @patch_size (and also whether this size does not
- * exceed the per-family maximum).
- */
-static unsigned int verify_patch_size(u8 family, u32 patch_size, unsigned int size)
-{
-	u32 max_size;
-
-#define F1XH_MPB_MAX_SIZE 2048
-#define F14H_MPB_MAX_SIZE 1824
-#define F15H_MPB_MAX_SIZE 4096
-#define F16H_MPB_MAX_SIZE 3458
-#define F17H_MPB_MAX_SIZE 3200
-
-	switch (family) {
-	case 0x14:
-		max_size = F14H_MPB_MAX_SIZE;
-		break;
-	case 0x15:
-		max_size = F15H_MPB_MAX_SIZE;
-		break;
-	case 0x16:
-		max_size = F16H_MPB_MAX_SIZE;
-		break;
-	case 0x17:
-		max_size = F17H_MPB_MAX_SIZE;
-		break;
-	default:
-		max_size = F1XH_MPB_MAX_SIZE;
-		break;
-	}
-
-	if (patch_size > min_t(u32, size, max_size)) {
-		pr_err("patch size mismatch\n");
-		return 0;
-	}
-
-	return patch_size;
-}
-
 static enum ucode_state apply_microcode_amd(int cpu)
 {
 	struct cpuinfo_x86 *c = &cpu_data(cpu);