2 files changed, 28 insertions, 2 deletions

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index f5c69d8974e1..b81fe2d63e15 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -669,6 +669,17 @@ static void init_amd_gh(struct cpuinfo_x86 *c)
                 set_cpu_bug(c, X86_BUG_AMD_TLB_MMATCH);
 }
 
+#define MSR_AMD64_DE_CFG        0xC0011029
+
+static void init_amd_ln(struct cpuinfo_x86 *c)
+{
+        /*
+         * Apply erratum 665 fix unconditionally so machines without a BIOS
+         * fix work.
+         */
+        msr_set_bit(MSR_AMD64_DE_CFG, 31);
+}
+
 static void init_amd_bd(struct cpuinfo_x86 *c)
 {
         u64 value;
@@ -726,6 +737,7 @@ static void init_amd(struct cpuinfo_x86 *c)
         case 6:    init_amd_k7(c); break;
         case 0xf:  init_amd_k8(c); break;
         case 0x10: init_amd_gh(c); break;
+        case 0x12: init_amd_ln(c); break;
         case 0x15: init_amd_bd(c); break;
         }
 
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 27a0228c9cae..620ab06bcf45 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -54,6 +54,7 @@ static LIST_HEAD(pcache);
  */
 static u8 *container;
 static size_t container_size;
+static bool ucode_builtin;
 
 static u32 ucode_new_rev;
 static u8 amd_ucode_patch[PATCH_MAX_SIZE];
@@ -281,18 +282,22 @@ static bool __init load_builtin_amd_microcode(struct cpio_data *cp,
 void __init load_ucode_amd_bsp(unsigned int family)
 {
         struct cpio_data cp;
+        bool *builtin;
         void **data;
         size_t *size;
 
 #ifdef CONFIG_X86_32
         data =  (void **)__pa_nodebug(&ucode_cpio.data);
         size = (size_t *)__pa_nodebug(&ucode_cpio.size);
+        builtin = (bool *)__pa_nodebug(&ucode_builtin);
 #else
         data = &ucode_cpio.data;
         size = &ucode_cpio.size;
+        builtin = &ucode_builtin;
 #endif
 
-        if (!load_builtin_amd_microcode(&cp, family))
+        *builtin = load_builtin_amd_microcode(&cp, family);
+        if (!*builtin)
                 cp = find_ucode_in_initrd();
 
         if (!(cp.data && cp.size))
@@ -355,6 +360,7 @@ void load_ucode_amd_ap(void)
         unsigned int cpu = smp_processor_id();
         struct equiv_cpu_entry *eq;
         struct microcode_amd *mc;
+        u8 *cont = container;
         u32 rev, eax;
         u16 eq_id;
 
@@ -371,8 +377,12 @@ void load_ucode_amd_ap(void)
         if (check_current_patch_level(&rev, false))
                 return;
 
+        /* Add CONFIG_RANDOMIZE_MEMORY offset. */
+        if (!ucode_builtin)
+                cont += PAGE_OFFSET - __PAGE_OFFSET_BASE;
+
         eax = cpuid_eax(0x00000001);
-        eq  = (struct equiv_cpu_entry *)(container + CONTAINER_HDR_SZ);
+        eq  = (struct equiv_cpu_entry *)(cont + CONTAINER_HDR_SZ);
 
         eq_id = find_equiv_id(eq, eax);
         if (!eq_id)
@@ -434,6 +444,10 @@ int __init save_microcode_in_initrd_amd(void)
         else
                 container = cont_va;
 
+        /* Add CONFIG_RANDOMIZE_MEMORY offset. */
+        if (!ucode_builtin)
+                container += PAGE_OFFSET - __PAGE_OFFSET_BASE;
+
         eax   = cpuid_eax(0x00000001);
         eax   = ((eax >> 8) & 0xf) + ((eax >> 20) & 0xff);