Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1563900 > unrolled thread

[PATCH 06/16] x86/microcode/AMD: Extend the container struct

Started byBorislav Petkov <bp@alien8.de>
First post2017-01-20 21:40 +0100
Last post2017-01-23 10:20 +0100
Articles 2 — 2 participants

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  [PATCH 06/16] x86/microcode/AMD: Extend the container struct Borislav Petkov <bp@alien8.de> - 2017-01-20 21:40 +0100
    [tip:x86/mce] x86/microcode/AMD: Extend the container struct tip-bot for Borislav Petkov <tipbot@zytor.com> - 2017-01-23 10:20 +0100

#1563900 — [PATCH 06/16] x86/microcode/AMD: Extend the container struct

FromBorislav Petkov <bp@alien8.de>
Date2017-01-20 21:40 +0100
Subject[PATCH 06/16] x86/microcode/AMD: Extend the container struct
Message-ID<t1O8y-3uV-15@gated-at.bofh.it>
From: Borislav Petkov <bp@suse.de>

Make it into a container descriptor which is being passed around and
stores important info like the matching container and the patch for the
current CPU. Make it static too.

Later patches will use this and thus get rid of a double container
parsing.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
---
 arch/x86/kernel/cpu/microcode/amd.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 1691f41fcfdb..4e2238345308 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -42,11 +42,15 @@ static struct equiv_cpu_entry *equiv_cpu_table;
 
 /*
  * This points to the current valid container of microcode patches which we will
- * save from the initrd/builtin before jettisoning its contents.
+ * save from the initrd/builtin before jettisoning its contents. @mc is the
+ * microcode patch we found to match.
  */
-struct container {
-	u8 *data;
-	size_t size;
+static struct cont_desc {
+	struct microcode_amd *mc;
+	u32		     psize;
+	u16		     eq_id;
+	u8		     *data;
+	size_t		     size;
 } cont;
 
 static u32 ucode_new_rev;
@@ -113,9 +117,9 @@ static u16 find_equiv_id(struct equiv_cpu_entry *equiv_table, u32 sig)
  * table or 0 if none found.
  */
 static u16
-find_proper_container(u8 *ucode, size_t size, struct container *ret_cont)
+find_proper_container(u8 *ucode, size_t size, struct cont_desc *desc)
 {
-	struct container ret = { NULL, 0 };
+	struct cont_desc ret = { 0 };
 	u32 eax, ebx, ecx, edx;
 	struct equiv_cpu_entry *eq;
 	int offset, left;
@@ -158,7 +162,7 @@ find_proper_container(u8 *ucode, size_t size, struct container *ret_cont)
 			 */
 			left = ret.size - offset;
 
-			*ret_cont = ret;
+			*desc = ret;
 			return eq_id;
 		}
 
@@ -213,11 +217,11 @@ static int __apply_microcode_amd(struct microcode_amd *mc)
  * Returns true if container found (sets @ret_cont), false otherwise.
  */
 static bool apply_microcode_early_amd(void *ucode, size_t size, bool save_patch,
-				      struct container *ret_cont)
+				      struct cont_desc *desc)
 {
 	u8 (*patch)[PATCH_MAX_SIZE];
 	u32 rev, *header, *new_rev;
-	struct container ret;
+	struct cont_desc ret;
 	int offset, left;
 	u16 eq_id = 0;
 	u8  *data;
@@ -270,8 +274,8 @@ static bool apply_microcode_early_amd(void *ucode, size_t size, bool save_patch,
 		left   -= offset;
 	}
 
-	if (ret_cont)
-		*ret_cont = ret;
+	if (desc)
+		*desc = ret;
 
 	return true;
 }
-- 
2.11.0

[toc] | [next] | [standalone]

#1564794 — [tip:x86/mce] x86/microcode/AMD: Extend the container struct

Fromtip-bot for Borislav Petkov <tipbot@zytor.com>
Date2017-01-23 10:20 +0100
Subject[tip:x86/mce] x86/microcode/AMD: Extend the container struct
Message-ID<t2IX7-4Ae-1@gated-at.bofh.it>
In reply to#1563900
Commit-ID:  f454177f739e92620d84a1f42f91b03007a1cdd0
Gitweb:     http://git.kernel.org/tip/f454177f739e92620d84a1f42f91b03007a1cdd0
Author:     Borislav Petkov <bp@suse.de>
AuthorDate: Fri, 20 Jan 2017 21:29:45 +0100
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 23 Jan 2017 10:02:47 +0100

x86/microcode/AMD: Extend the container struct

Make it into a container descriptor which is being passed around and
stores important info like the matching container and the patch for the
current CPU. Make it static too.

Later patches will use this and thus get rid of a double container
parsing.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170120202955.4091-7-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

---
 arch/x86/kernel/cpu/microcode/amd.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 1691f41..4e22383 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -42,11 +42,15 @@ static struct equiv_cpu_entry *equiv_cpu_table;
 
 /*
  * This points to the current valid container of microcode patches which we will
- * save from the initrd/builtin before jettisoning its contents.
+ * save from the initrd/builtin before jettisoning its contents. @mc is the
+ * microcode patch we found to match.
  */
-struct container {
-	u8 *data;
-	size_t size;
+static struct cont_desc {
+	struct microcode_amd *mc;
+	u32		     psize;
+	u16		     eq_id;
+	u8		     *data;
+	size_t		     size;
 } cont;
 
 static u32 ucode_new_rev;
@@ -113,9 +117,9 @@ static u16 find_equiv_id(struct equiv_cpu_entry *equiv_table, u32 sig)
  * table or 0 if none found.
  */
 static u16
-find_proper_container(u8 *ucode, size_t size, struct container *ret_cont)
+find_proper_container(u8 *ucode, size_t size, struct cont_desc *desc)
 {
-	struct container ret = { NULL, 0 };
+	struct cont_desc ret = { 0 };
 	u32 eax, ebx, ecx, edx;
 	struct equiv_cpu_entry *eq;
 	int offset, left;
@@ -158,7 +162,7 @@ find_proper_container(u8 *ucode, size_t size, struct container *ret_cont)
 			 */
 			left = ret.size - offset;
 
-			*ret_cont = ret;
+			*desc = ret;
 			return eq_id;
 		}
 
@@ -213,11 +217,11 @@ static int __apply_microcode_amd(struct microcode_amd *mc)
  * Returns true if container found (sets @ret_cont), false otherwise.
  */
 static bool apply_microcode_early_amd(void *ucode, size_t size, bool save_patch,
-				      struct container *ret_cont)
+				      struct cont_desc *desc)
 {
 	u8 (*patch)[PATCH_MAX_SIZE];
 	u32 rev, *header, *new_rev;
-	struct container ret;
+	struct cont_desc ret;
 	int offset, left;
 	u16 eq_id = 0;
 	u8  *data;
@@ -270,8 +274,8 @@ static bool apply_microcode_early_amd(void *ucode, size_t size, bool save_patch,
 		left   -= offset;
 	}
 
-	if (ret_cont)
-		*ret_cont = ret;
+	if (desc)
+		*desc = ret;
 
 	return true;
 }

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web