From: tip-bot for Borislav Petkov <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: bp@suse.de, tglx@linutronix.de, linux-kernel@vger.kernel.org,
mingo@kernel.org, hpa@zytor.com
Subject: [tip:x86/microcode] x86/microcode/AMD: Move verify_patch_size() up in the file
Date: Mon, 19 Nov 2018 02:14:04 -0800 [thread overview]
Message-ID: <tip-3974b68114fed3735f623931e673538d8ab92d26@git.kernel.org> (raw)
In-Reply-To: <20181107170218.7596-4-bp@alien8.de>
Commit-ID: 3974b68114fed3735f623931e673538d8ab92d26
Gitweb: https://git.kernel.org/tip/3974b68114fed3735f623931e673538d8ab92d26
Author: Borislav Petkov <bp@suse.de>
AuthorDate: Thu, 28 Jun 2018 19:44:29 +0200
Committer: Borislav Petkov <bp@suse.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@suse.de>
Cc: x86@kernel.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);
next prev parent reply other threads:[~2018-11-19 10:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-07 17:02 [PATCH 00/16] x86/microcode/AMD: Improve container verification Borislav Petkov
2018-11-07 17:02 ` [PATCH 01/16] x86/microcode/AMD: Subtract SECTION_HDR_SIZE from file leftover length Borislav Petkov
2018-11-07 17:02 ` [PATCH 02/16] x86/microcode/AMD: Add microcode container verification Borislav Petkov
2018-11-07 17:02 ` [PATCH 03/16] x86/microcode/AMD: Move verify_patch_size() up in the file Borislav Petkov
2018-11-19 10:14 ` tip-bot for Borislav Petkov [this message]
2018-11-07 17:02 ` [PATCH 04/16] x86/microcode/AMD: Clean up per-family patch size checks Borislav Petkov
2018-11-19 10:14 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 05/16] x86/microcode/AMD: Cleanup verify_patch_size() more Borislav Petkov
2018-11-19 10:15 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 06/16] x86/microcode/AMD: Concentrate patch verification Borislav Petkov
2018-11-19 10:15 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 07/16] x86/microcode/AMD: Simplify patch family detection Borislav Petkov
2018-11-19 10:16 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 08/16] x86/microcode/AMD: Move patch family check to verify_patch() Borislav Petkov
2018-11-19 10:16 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 09/16] x86/microcode/AMD: Move chipset-specific check into verify_patch() Borislav Petkov
2018-11-07 17:02 ` [PATCH 10/16] x86/microcode/AMD: Change verify_patch()'s return value Borislav Petkov
2018-11-19 10:18 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 11/16] x86/microcode/AMD: Convert early parser to the new verification routines Borislav Petkov
2018-11-19 10:18 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 12/16] x86/microcode/AMD: Fix container size's type Borislav Petkov
2018-11-10 20:59 ` kbuild test robot
2018-11-19 10:19 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-07 17:02 ` [PATCH 13/16] x86/microcode/AMD: Check microcode container data in the late loader Borislav Petkov
2018-11-19 10:19 ` [tip:x86/microcode] " tip-bot for Maciej S. Szmigiero
2018-11-07 17:02 ` [PATCH 14/16] x86/microcode/AMD: Convert CPU equivalence table variable into a struct Borislav Petkov
2018-11-19 10:20 ` [tip:x86/microcode] " tip-bot for Maciej S. Szmigiero
2018-11-07 17:02 ` [PATCH 15/16] x86/microcode/AMD: Check the equivalence table size when scanning it Borislav Petkov
2018-11-19 10:20 ` [tip:x86/microcode] " tip-bot for Maciej S. Szmigiero
2018-11-07 17:02 ` [PATCH 16/16] x86/microcode/AMD: Update copyright Borislav Petkov
2018-11-19 10:21 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2018-11-25 9:50 ` [PATCH 00/16] x86/microcode/AMD: Improve container verification Pavel Machek
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