1 files changed, 16 insertions, 7 deletions

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index d46300e94f85..0086920cda06 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -28,6 +28,7 @@ struct vm86;
 #include <asm/unwind_hints.h>
 #include <asm/vmxfeatures.h>
 #include <asm/vdso/processor.h>
+#include <asm/shstk.h>
 
 #include <linux/personality.h>
 #include <linux/cache.h>
@@ -190,7 +191,6 @@ static inline unsigned long long l1tf_pfn_limit(void)
 }
 
 extern void early_cpu_init(void);
-extern void identify_boot_cpu(void);
 extern void identify_secondary_cpu(struct cpuinfo_x86 *);
 extern void print_cpu_info(struct cpuinfo_x86 *);
 void print_cpu_msr(struct cpuinfo_x86 *);
@@ -475,6 +475,13 @@ struct thread_struct {
 	 */
 	u32			pkru;
 
+#ifdef CONFIG_X86_USER_SHADOW_STACK
+	unsigned long		features;
+	unsigned long		features_locked;
+
+	struct thread_shstk	shstk;
+#endif
+
 	/* Floating point and extended processor state */
 	struct fpu		fpu;
 	/*
@@ -586,7 +593,6 @@ extern char			ignore_fpu_irq;
 
 #define HAVE_ARCH_PICK_MMAP_LAYOUT 1
 #define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH
 
 #ifdef CONFIG_X86_32
 # define BASE_PREFETCH		""
@@ -620,11 +626,6 @@ static __always_inline void prefetchw(const void *x)
 			  "m" (*(const char *)x));
 }
 
-static inline void spin_lock_prefetch(const void *x)
-{
-	prefetchw(x);
-}
-
 #define TOP_OF_INIT_STACK ((unsigned long)&init_stack + sizeof(init_stack) - \
 			   TOP_OF_KERNEL_STACK_PADDING)
 
@@ -682,9 +683,15 @@ extern u16 get_llc_id(unsigned int cpu);
 #ifdef CONFIG_CPU_SUP_AMD
 extern u32 amd_get_nodes_per_socket(void);
 extern u32 amd_get_highest_perf(void);
+extern bool cpu_has_ibpb_brtype_microcode(void);
+extern void amd_clear_divider(void);
+extern void amd_check_microcode(void);
 #else
 static inline u32 amd_get_nodes_per_socket(void)	{ return 0; }
 static inline u32 amd_get_highest_perf(void)		{ return 0; }
+static inline bool cpu_has_ibpb_brtype_microcode(void)	{ return false; }
+static inline void amd_clear_divider(void)		{ }
+static inline void amd_check_microcode(void)		{ }
 #endif
 
 extern unsigned long arch_align_stack(unsigned long sp);
@@ -727,4 +734,6 @@ bool arch_is_platform_page(u64 paddr);
 #define arch_is_platform_page arch_is_platform_page
 #endif
 
+extern bool gds_ucode_mitigated(void);
+
 #endif /* _ASM_X86_PROCESSOR_H */