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OpenCloudOS-Kernel
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Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, microcode, AMD: Cleanup code a bit
  x86, microcode, AMD: Replace vmalloc+memset with vzalloc
This commit is contained in:
Linus Torvalds 2011-01-06 11:06:09 -08:00
parent 4e1db5e58a c7657ac0c3
commit 6f46b120a9
2 changed files with 16 additions and 24 deletions
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6
arch/x86/include/asm/microcode.h
View File

@ -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)
{

34
arch/x86/kernel/microcode_amd.c
View File

@ -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 */
}