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-rw-r--r--arch/x86/include/asm/asm.h14
-rw-r--r--arch/x86/include/asm/coco.h8
-rw-r--r--arch/x86/include/asm/mem_encrypt.h15
3 files changed, 30 insertions, 7 deletions
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index fbcfec4dc4cc..ca8eed1d496a 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -113,6 +113,20 @@
#endif
+#ifndef __ASSEMBLY__
+#ifndef __pic__
+static __always_inline __pure void *rip_rel_ptr(void *p)
+{
+ asm("leaq %c1(%%rip), %0" : "=r"(p) : "i"(p));
+
+ return p;
+}
+#define RIP_REL_REF(var) (*(typeof(&(var)))rip_rel_ptr(&(var)))
+#else
+#define RIP_REL_REF(var) (var)
+#endif
+#endif
+
/*
* Macros to generate condition code outputs from inline assembly,
* The output operand must be type "bool".
diff --git a/arch/x86/include/asm/coco.h b/arch/x86/include/asm/coco.h
index 6ae2d16a7613..21940ef8d290 100644
--- a/arch/x86/include/asm/coco.h
+++ b/arch/x86/include/asm/coco.h
@@ -2,6 +2,7 @@
#ifndef _ASM_X86_COCO_H
#define _ASM_X86_COCO_H
+#include <asm/asm.h>
#include <asm/types.h>
enum cc_vendor {
@@ -11,9 +12,14 @@ enum cc_vendor {
};
extern enum cc_vendor cc_vendor;
+extern u64 cc_mask;
#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
-void cc_set_mask(u64 mask);
+static inline void cc_set_mask(u64 mask)
+{
+ RIP_REL_REF(cc_mask) = mask;
+}
+
u64 cc_mkenc(u64 val);
u64 cc_mkdec(u64 val);
#else
diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h
index 359ada486fa9..b31eb9fd5954 100644
--- a/arch/x86/include/asm/mem_encrypt.h
+++ b/arch/x86/include/asm/mem_encrypt.h
@@ -15,7 +15,8 @@
#include <linux/init.h>
#include <linux/cc_platform.h>
-#include <asm/bootparam.h>
+#include <asm/asm.h>
+struct boot_params;
#ifdef CONFIG_X86_MEM_ENCRYPT
void __init mem_encrypt_init(void);
@@ -58,6 +59,11 @@ void __init mem_encrypt_free_decrypted_mem(void);
void __init sev_es_init_vc_handling(void);
+static inline u64 sme_get_me_mask(void)
+{
+ return RIP_REL_REF(sme_me_mask);
+}
+
#define __bss_decrypted __section(".bss..decrypted")
#else /* !CONFIG_AMD_MEM_ENCRYPT */
@@ -89,6 +95,8 @@ early_set_mem_enc_dec_hypercall(unsigned long vaddr, unsigned long size, bool en
static inline void mem_encrypt_free_decrypted_mem(void) { }
+static inline u64 sme_get_me_mask(void) { return 0; }
+
#define __bss_decrypted
#endif /* CONFIG_AMD_MEM_ENCRYPT */
@@ -106,11 +114,6 @@ void add_encrypt_protection_map(void);
extern char __start_bss_decrypted[], __end_bss_decrypted[], __start_bss_decrypted_unused[];
-static inline u64 sme_get_me_mask(void)
-{
- return sme_me_mask;
-}
-
#endif /* __ASSEMBLY__ */
#endif /* __X86_MEM_ENCRYPT_H__ */