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-rw-r--r--arch/x86/kernel/microcode_intel.c46
-rw-r--r--include/asm-x86/microcode.h10
2 files changed, 30 insertions, 26 deletions
diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c
index eded0a154ea..ca9861bf067 100644
--- a/arch/x86/kernel/microcode_intel.c
+++ b/arch/x86/kernel/microcode_intel.c
@@ -100,17 +100,19 @@ MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
MODULE_LICENSE("GPL");
#define DEFAULT_UCODE_DATASIZE (2000) /* 2000 bytes */
-#define MC_HEADER_SIZE (sizeof(struct microcode_header)) /* 48 bytes */
+#define MC_HEADER_SIZE (sizeof(struct microcode_header_intel)) /* 48 bytes */
#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE) /* 2048 bytes */
#define EXT_HEADER_SIZE (sizeof(struct extended_sigtable)) /* 20 bytes */
#define EXT_SIGNATURE_SIZE (sizeof(struct extended_signature)) /* 12 bytes */
#define DWSIZE (sizeof(u32))
#define get_totalsize(mc) \
- (((struct microcode *)mc)->hdr.totalsize ? \
- ((struct microcode *)mc)->hdr.totalsize : DEFAULT_UCODE_TOTALSIZE)
+ (((struct microcode_intel *)mc)->hdr.totalsize ? \
+ ((struct microcode_intel *)mc)->hdr.totalsize : \
+ DEFAULT_UCODE_TOTALSIZE)
+
#define get_datasize(mc) \
- (((struct microcode *)mc)->hdr.datasize ? \
- ((struct microcode *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
+ (((struct microcode_intel *)mc)->hdr.datasize ? \
+ ((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
#define sigmatch(s1, s2, p1, p2) \
(((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))
@@ -134,7 +136,7 @@ void collect_cpu_info(int cpu_num)
/* We should bind the task to the CPU */
BUG_ON(raw_smp_processor_id() != cpu_num);
uci->pf = uci->rev = 0;
- uci->mc = NULL;
+ uci->mc.mc_intel = NULL;
uci->valid = 1;
if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
@@ -163,7 +165,7 @@ void collect_cpu_info(int cpu_num)
}
static inline int microcode_update_match(int cpu_num,
- struct microcode_header *mc_header, int sig, int pf)
+ struct microcode_header_intel *mc_header, int sig, int pf)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
@@ -175,7 +177,7 @@ static inline int microcode_update_match(int cpu_num,
int microcode_sanity_check(void *mc)
{
- struct microcode_header *mc_header = mc;
+ struct microcode_header_intel *mc_header = mc;
struct extended_sigtable *ext_header = NULL;
struct extended_signature *ext_sig;
unsigned long total_size, data_size, ext_table_size;
@@ -260,7 +262,7 @@ int microcode_sanity_check(void *mc)
int get_matching_microcode(void *mc, int cpu)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
- struct microcode_header *mc_header = mc;
+ struct microcode_header_intel *mc_header = mc;
struct extended_sigtable *ext_header;
unsigned long total_size = get_totalsize(mc_header);
int ext_sigcount, i;
@@ -294,10 +296,10 @@ find:
}
/* free previous update file */
- vfree(uci->mc);
+ vfree(uci->mc.mc_intel);
memcpy(new_mc, mc, total_size);
- uci->mc = new_mc;
+ uci->mc.mc_intel = new_mc;
return 1;
}
@@ -311,7 +313,7 @@ void apply_microcode(int cpu)
/* We should bind the task to the CPU */
BUG_ON(cpu_num != cpu);
- if (uci->mc == NULL)
+ if (uci->mc.mc_intel == NULL)
return;
/* serialize access to the physical write to MSR 0x79 */
@@ -319,8 +321,8 @@ void apply_microcode(int cpu)
/* write microcode via MSR 0x79 */
wrmsr(MSR_IA32_UCODE_WRITE,
- (unsigned long) uci->mc->bits,
- (unsigned long) uci->mc->bits >> 16 >> 16);
+ (unsigned long) uci->mc.mc_intel->bits,
+ (unsigned long) uci->mc.mc_intel->bits >> 16 >> 16);
wrmsr(MSR_IA32_UCODE_REV, 0, 0);
/* see notes above for revision 1.07. Apparent chip bug */
@@ -330,14 +332,14 @@ void apply_microcode(int cpu)
rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
spin_unlock_irqrestore(&microcode_update_lock, flags);
- if (val[1] != uci->mc->hdr.rev) {
+ if (val[1] != uci->mc.mc_intel->hdr.rev) {
printk(KERN_ERR "microcode: CPU%d update from revision "
"0x%x to 0x%x failed\n", cpu_num, uci->rev, val[1]);
return;
}
printk(KERN_INFO "microcode: CPU%d updated from revision "
"0x%x to 0x%x, date = %08x \n",
- cpu_num, uci->rev, val[1], uci->mc->hdr.date);
+ cpu_num, uci->rev, val[1], uci->mc.mc_intel->hdr.date);
uci->rev = val[1];
}
@@ -347,7 +349,7 @@ extern unsigned int user_buffer_size; /* it's size */
long get_next_ucode(void **mc, long offset)
{
- struct microcode_header mc_header;
+ struct microcode_header_intel mc_header;
unsigned long total_size;
/* No more data */
@@ -378,13 +380,13 @@ long get_next_ucode(void **mc, long offset)
static long get_next_ucode_from_buffer(void **mc, const u8 *buf,
unsigned long size, long offset)
{
- struct microcode_header *mc_header;
+ struct microcode_header_intel *mc_header;
unsigned long total_size;
/* No more data */
if (offset >= size)
return 0;
- mc_header = (struct microcode_header *)(buf + offset);
+ mc_header = (struct microcode_header_intel *)(buf + offset);
total_size = get_totalsize(mc_header);
if (offset + total_size > size) {
@@ -463,7 +465,7 @@ int apply_microcode_check_cpu(int cpu)
int err = 0;
/* Check if the microcode is available */
- if (!uci->mc)
+ if (!uci->mc.mc_intel)
return 0;
old = current->cpus_allowed;
@@ -508,7 +510,7 @@ void microcode_fini_cpu(int cpu)
mutex_lock(&microcode_mutex);
uci->valid = 0;
- kfree(uci->mc);
- uci->mc = NULL;
+ kfree(uci->mc.mc_intel);
+ uci->mc.mc_intel = NULL;
mutex_unlock(&microcode_mutex);
}
diff --git a/include/asm-x86/microcode.h b/include/asm-x86/microcode.h
index d34a1fc1b17..ef77c6f438b 100644
--- a/include/asm-x86/microcode.h
+++ b/include/asm-x86/microcode.h
@@ -1,4 +1,4 @@
-struct microcode_header {
+struct microcode_header_intel {
unsigned int hdrver;
unsigned int rev;
unsigned int date;
@@ -11,8 +11,8 @@ struct microcode_header {
unsigned int reserved[3];
};
-struct microcode {
- struct microcode_header hdr;
+struct microcode_intel {
+ struct microcode_header_intel hdr;
unsigned int bits[0];
};
@@ -35,5 +35,7 @@ struct ucode_cpu_info {
unsigned int sig;
unsigned int pf;
unsigned int rev;
- struct microcode *mc;
+ union {
+ struct microcode_intel *mc_intel;
+ } mc;
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-20 07:40:15 +0000