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-rw-r--r--arch/arm/include/asm/jump_label.h25
-rw-r--r--arch/arm64/include/asm/jump_label.h18
-rw-r--r--arch/mips/include/asm/jump_label.h19
-rw-r--r--arch/powerpc/include/asm/jump_label.h19
-rw-r--r--arch/s390/include/asm/jump_label.h19
-rw-r--r--arch/sparc/include/asm/jump_label.h35
-rw-r--r--arch/x86/include/asm/jump_label.h21
7 files changed, 129 insertions, 27 deletions
diff --git a/arch/arm/include/asm/jump_label.h b/arch/arm/include/asm/jump_label.h
index 5f337dc5c108..34f7b6980d21 100644
--- a/arch/arm/include/asm/jump_label.h
+++ b/arch/arm/include/asm/jump_label.h
@@ -4,23 +4,32 @@
#ifndef __ASSEMBLY__
#include <linux/types.h>
+#include <asm/unified.h>
#define JUMP_LABEL_NOP_SIZE 4
-#ifdef CONFIG_THUMB2_KERNEL
-#define JUMP_LABEL_NOP "nop.w"
-#else
-#define JUMP_LABEL_NOP "nop"
-#endif
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("1:\n\t"
+ WASM(nop) "\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".word 1b, %l[l_yes], %c0\n\t"
+ ".popsection\n\t"
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
-static __always_inline bool arch_static_branch(struct static_key *key)
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
{
asm_volatile_goto("1:\n\t"
- JUMP_LABEL_NOP "\n\t"
+ WASM(b) " %l[l_yes]\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".word 1b, %l[l_yes], %c0\n\t"
".popsection\n\t"
- : : "i" (key) : : l_yes);
+ : : "i" (&((char *)key)[branch]) : : l_yes);
return false;
l_yes:
diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h
index c0e5165c2f76..1b5e0e843c3a 100644
--- a/arch/arm64/include/asm/jump_label.h
+++ b/arch/arm64/include/asm/jump_label.h
@@ -26,14 +26,28 @@
#define JUMP_LABEL_NOP_SIZE AARCH64_INSN_SIZE
-static __always_inline bool arch_static_branch(struct static_key *key)
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm goto("1: nop\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".align 3\n\t"
".quad 1b, %l[l_yes], %c0\n\t"
".popsection\n\t"
- : : "i"(key) : : l_yes);
+ : : "i"(&((char *)key)[branch]) : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
+{
+ asm goto("1: b %l[l_yes]\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".align 3\n\t"
+ ".quad 1b, %l[l_yes], %c0\n\t"
+ ".popsection\n\t"
+ : : "i"(&((char *)key)[branch]) : : l_yes);
return false;
l_yes:
diff --git a/arch/mips/include/asm/jump_label.h b/arch/mips/include/asm/jump_label.h
index 608aa57799c8..e77672539e8e 100644
--- a/arch/mips/include/asm/jump_label.h
+++ b/arch/mips/include/asm/jump_label.h
@@ -26,14 +26,29 @@
#define NOP_INSN "nop"
#endif
-static __always_inline bool arch_static_branch(struct static_key *key)
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm_volatile_goto("1:\t" NOP_INSN "\n\t"
"nop\n\t"
".pushsection __jump_table, \"aw\"\n\t"
WORD_INSN " 1b, %l[l_yes], %0\n\t"
".popsection\n\t"
- : : "i" (key) : : l_yes);
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("1:\tj %l[l_yes]\n\t"
+ "nop\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ WORD_INSN " 1b, %l[l_yes], %0\n\t"
+ ".popsection\n\t"
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
return false;
l_yes:
return true;
diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h
index efbf9a322a23..47e155f15433 100644
--- a/arch/powerpc/include/asm/jump_label.h
+++ b/arch/powerpc/include/asm/jump_label.h
@@ -18,14 +18,29 @@
#define JUMP_ENTRY_TYPE stringify_in_c(FTR_ENTRY_LONG)
#define JUMP_LABEL_NOP_SIZE 4
-static __always_inline bool arch_static_branch(struct static_key *key)
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm_volatile_goto("1:\n\t"
"nop\n\t"
".pushsection __jump_table, \"aw\"\n\t"
JUMP_ENTRY_TYPE "1b, %l[l_yes], %c0\n\t"
".popsection \n\t"
- : : "i" (key) : : l_yes);
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("1:\n\t"
+ "b %l[l_yes]\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ JUMP_ENTRY_TYPE "1b, %l[l_yes], %c0\n\t"
+ ".popsection \n\t"
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
return false;
l_yes:
return true;
diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h
index 69972b7957ee..7f9fd5e3f1bf 100644
--- a/arch/s390/include/asm/jump_label.h
+++ b/arch/s390/include/asm/jump_label.h
@@ -12,14 +12,29 @@
* We use a brcl 0,2 instruction for jump labels at compile time so it
* can be easily distinguished from a hotpatch generated instruction.
*/
-static __always_inline bool arch_static_branch(struct static_key *key)
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm_volatile_goto("0: brcl 0,"__stringify(JUMP_LABEL_NOP_OFFSET)"\n"
".pushsection __jump_table, \"aw\"\n"
".balign 8\n"
".quad 0b, %l[label], %0\n"
".popsection\n"
- : : "X" (key) : : label);
+ : : "X" (&((char *)key)[branch]) : : label);
+
+ return false;
+label:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("0: brcl 15, %l[label]\n"
+ ".pushsection __jump_table, \"aw\"\n"
+ ".balign 8\n"
+ ".quad 0b, %l[label], %0\n"
+ ".popsection\n"
+ : : "X" (&((char *)key)[branch]) : : label);
+
return false;
label:
return true;
diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h
index cc9b04a2b11b..62d0354d1727 100644
--- a/arch/sparc/include/asm/jump_label.h
+++ b/arch/sparc/include/asm/jump_label.h
@@ -7,16 +7,33 @@
#define JUMP_LABEL_NOP_SIZE 4
-static __always_inline bool arch_static_branch(struct static_key *key)
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
- asm_volatile_goto("1:\n\t"
- "nop\n\t"
- "nop\n\t"
- ".pushsection __jump_table, \"aw\"\n\t"
- ".align 4\n\t"
- ".word 1b, %l[l_yes], %c0\n\t"
- ".popsection \n\t"
- : : "i" (key) : : l_yes);
+ asm_volatile_goto("1:\n\t"
+ "nop\n\t"
+ "nop\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".align 4\n\t"
+ ".word 1b, %l[l_yes], %c0\n\t"
+ ".popsection \n\t"
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("1:\n\t"
+ "b %l[l_yes]\n\t"
+ "nop\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".align 4\n\t"
+ ".word 1b, %l[l_yes], %c0\n\t"
+ ".popsection \n\t"
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
return false;
l_yes:
return true;
diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h
index a4c1cf7e93f8..28d7a857f9d1 100644
--- a/arch/x86/include/asm/jump_label.h
+++ b/arch/x86/include/asm/jump_label.h
@@ -16,7 +16,7 @@
# define STATIC_KEY_INIT_NOP GENERIC_NOP5_ATOMIC
#endif
-static __always_inline bool arch_static_branch(struct static_key *key)
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm_volatile_goto("1:"
".byte " __stringify(STATIC_KEY_INIT_NOP) "\n\t"
@@ -24,7 +24,24 @@ static __always_inline bool arch_static_branch(struct static_key *key)
_ASM_ALIGN "\n\t"
_ASM_PTR "1b, %l[l_yes], %c0 \n\t"
".popsection \n\t"
- : : "i" (key) : : l_yes);
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("1:"
+ ".byte 0xe9\n\t .long %l[l_yes] - 2f\n\t"
+ "2:\n\t"
+ ".pushsection __jump_table, \"aw\" \n\t"
+ _ASM_ALIGN "\n\t"
+ _ASM_PTR "1b, %l[l_yes], %c0 \n\t"
+ ".popsection \n\t"
+ : : "i" (&((char *)key)[branch]) : : l_yes);
+
return false;
l_yes:
return true;
generated by cgit v1.2.3 (git 2.39.0) at 2025-03-05 06:02:32 +0300