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x86/microcode changes for v2.6.38

GIT PULL Ingo Molnar 1 participant 1 message Jan 6, 2011 x86

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Ingo Molnar

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Linus,

Please pull the latest x86-microcode-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-microcode-for-linus

Thanks,

Ingo

------------------>
Borislav Petkov (1):
x86, microcode, AMD: Cleanup code a bit

Jesper Juhl (1):
x86, microcode, AMD: Replace vmalloc+memset with vzalloc

 arch/x86/include/asm/microcode.h |    6 ++++++
 arch/x86/kernel/microcode_amd.c  |   34 ++++++++++------------------------
 2 files changed, 16 insertions(+), 24 deletions(-)
arch/x86/include/asm/microcode.h +6 -0
index ef51b50..2421507 100644
@@ -48,6 +48,12 @@ static inline struct microcode_ops * __init init_intel_microcode(void)
 
 #ifdef CONFIG_MICROCODE_AMD
 extern struct microcode_ops * __init init_amd_microcode(void);
+
+static inline void get_ucode_data(void *to, const u8 *from, size_t n)
+{
+	memcpy(to, from, n);
+}
+
 #else
 static inline struct microcode_ops * __init init_amd_microcode(void)
 {
arch/x86/kernel/microcode_amd.c +10 -24
index e1af7c0..15831336 100644
@@ -155,12 +155,6 @@ static int apply_microcode_amd(int cpu)
 	return 0;
 }
 
-static int get_ucode_data(void *to, const u8 *from, size_t n)
-{
-	memcpy(to, from, n);
-	return 0;
-}
-
 static void *
 get_next_ucode(const u8 *buf, unsigned int size, unsigned int *mc_size)
 {

@@ -168,8 +162,7 @@ get_next_ucode(const u8 *buf, unsigned int size, unsigned int *mc_size)
 	u8 section_hdr[UCODE_CONTAINER_SECTION_HDR];
 	void *mc;
 
-	if (get_ucode_data(section_hdr, buf, UCODE_CONTAINER_SECTION_HDR))
-		return NULL;
+	get_ucode_data(section_hdr, buf, UCODE_CONTAINER_SECTION_HDR);
 
 	if (section_hdr[0] != UCODE_UCODE_TYPE) {
 		pr_err("error: invalid type field in container file section header\n");

@@ -183,16 +176,13 @@ get_next_ucode(const u8 *buf, unsigned int size, unsigned int *mc_size)
 		return NULL;
 	}
 
-	mc = vmalloc(UCODE_MAX_SIZE);
-	if (mc) {
-		memset(mc, 0, UCODE_MAX_SIZE);
-		if (get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR,
-				   total_size)) {
-			vfree(mc);
-			mc = NULL;
-		} else
-			*mc_size = total_size + UCODE_CONTAINER_SECTION_HDR;
-	}
+	mc = vzalloc(UCODE_MAX_SIZE);
+	if (!mc)
+		return NULL;
+
+	get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR, total_size);
+	*mc_size = total_size + UCODE_CONTAINER_SECTION_HDR;
+
 	return mc;
 }
 

@@ -202,8 +192,7 @@ static int install_equiv_cpu_table(const u8 *buf)
 	unsigned int *buf_pos = (unsigned int *)container_hdr;
 	unsigned long size;
 
-	if (get_ucode_data(&container_hdr, buf, UCODE_CONTAINER_HEADER_SIZE))
-		return 0;
+	get_ucode_data(&container_hdr, buf, UCODE_CONTAINER_HEADER_SIZE);
 
 	size = buf_pos[2];
 

@@ -219,10 +208,7 @@ static int install_equiv_cpu_table(const u8 *buf)
 	}
 
 	buf += UCODE_CONTAINER_HEADER_SIZE;
-	if (get_ucode_data(equiv_cpu_table, buf, size)) {
-		vfree(equiv_cpu_table);
-		return 0;
-	}
+	get_ucode_data(equiv_cpu_table, buf, size);
 
 	return size + UCODE_CONTAINER_HEADER_SIZE; /* add header length */
 }