Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Two FPU rewrite related fixes.  This addresses all known x86
  regressions at this stage.  Also some other misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Fix boot crash in the early FPU code
  x86/asm/entry/64: Update path names
  x86/fpu: Fix FPU related boot regression when CPUID masking BIOS feature is enabled
  x86/boot/setup: Clean up the e820_reserve_setup_data() code
  x86/kaslr: Fix typo in the KASLR_FLAG documentation

3 files changed, 8 insertions, 8 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 9fc5e3d9d9c8..922c5e0cea4c 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -742,7 +742,6 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
         cpu_detect(c);
         get_cpu_vendor(c);
         get_cpu_cap(c);
-        fpu__init_system(c);
 
         if (this_cpu->c_early_init)
                 this_cpu->c_early_init(c);
@@ -754,6 +753,7 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
                 this_cpu->c_bsp_init(c);
 
         setup_force_cpu_cap(X86_FEATURE_ALWAYS);
+        fpu__init_system(c);
 }
 
 void __init early_cpu_init(void)
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index fc878fee6a51..32826791e675 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -95,11 +95,12 @@ static void __init fpu__init_system_mxcsr(void)
         unsigned int mask = 0;
 
         if (cpu_has_fxsr) {
-                struct fxregs_state fx_tmp __aligned(32) = { };
+                /* Static because GCC does not get 16-byte stack alignment right: */
+                static struct fxregs_state fxregs __initdata;
 
-                asm volatile("fxsave %0" : "+m" (fx_tmp));
+                asm volatile("fxsave %0" : "+m" (fxregs));
 
-                mask = fx_tmp.mxcsr_mask;
+                mask = fxregs.mxcsr_mask;
 
                 /*
                  * If zero then use the default features mask,
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d3b95b89e9b2..80f874bf999e 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -461,19 +461,18 @@ static void __init e820_reserve_setup_data(void)
 {
         struct setup_data *data;
         u64 pa_data;
-        int found = 0;
 
         pa_data = boot_params.hdr.setup_data;
+        if (!pa_data)
+                return;
+
         while (pa_data) {
                 data = early_memremap(pa_data, sizeof(*data));
                 e820_update_range(pa_data, sizeof(*data)+data->len,
                          E820_RAM, E820_RESERVED_KERN);
-                found = 1;
                 pa_data = data->next;
                 early_memunmap(data, sizeof(*data));
         }
-        if (!found)
-                return;
 
         sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
         memcpy(&e820_saved, &e820, sizeof(struct e820map));