5 files changed, 42 insertions, 61 deletions

diff --git a/arch/riscv/kernel/cfi.c b/arch/riscv/kernel/cfi.c
index 64bdd3e1ab8c..6ec9dbd7292e 100644
--- a/arch/riscv/kernel/cfi.c
+++ b/arch/riscv/kernel/cfi.c
@@ -75,56 +75,3 @@ enum bug_trap_type handle_cfi_failure(struct pt_regs *regs)
 
 	return report_cfi_failure(regs, regs->epc, &target, type);
 }
-
-#ifdef CONFIG_CFI_CLANG
-struct bpf_insn;
-
-/* Must match bpf_func_t / DEFINE_BPF_PROG_RUN() */
-extern unsigned int __bpf_prog_runX(const void *ctx,
-				    const struct bpf_insn *insn);
-
-/*
- * Force a reference to the external symbol so the compiler generates
- * __kcfi_typid.
- */
-__ADDRESSABLE(__bpf_prog_runX);
-
-/* u32 __ro_after_init cfi_bpf_hash = __kcfi_typeid___bpf_prog_runX; */
-asm (
-"	.pushsection	.data..ro_after_init,\"aw\",@progbits	\n"
-"	.type	cfi_bpf_hash,@object				\n"
-"	.globl	cfi_bpf_hash					\n"
-"	.p2align	2, 0x0					\n"
-"cfi_bpf_hash:							\n"
-"	.word	__kcfi_typeid___bpf_prog_runX			\n"
-"	.size	cfi_bpf_hash, 4					\n"
-"	.popsection						\n"
-);
-
-/* Must match bpf_callback_t */
-extern u64 __bpf_callback_fn(u64, u64, u64, u64, u64);
-
-__ADDRESSABLE(__bpf_callback_fn);
-
-/* u32 __ro_after_init cfi_bpf_subprog_hash = __kcfi_typeid___bpf_callback_fn; */
-asm (
-"	.pushsection	.data..ro_after_init,\"aw\",@progbits	\n"
-"	.type	cfi_bpf_subprog_hash,@object			\n"
-"	.globl	cfi_bpf_subprog_hash				\n"
-"	.p2align	2, 0x0					\n"
-"cfi_bpf_subprog_hash:						\n"
-"	.word	__kcfi_typeid___bpf_callback_fn			\n"
-"	.size	cfi_bpf_subprog_hash, 4				\n"
-"	.popsection						\n"
-);
-
-u32 cfi_get_func_hash(void *func)
-{
-	u32 hash;
-
-	if (get_kernel_nofault(hash, func - cfi_get_offset()))
-		return 0;
-
-	return hash;
-}
-#endif
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 75656afa2d6b..3a0ec6fd5956 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -220,7 +220,7 @@ SYM_CODE_START_NOALIGN(ret_from_exception)
 #endif
 	bnez s0, 1f
 
-#ifdef CONFIG_GCC_PLUGIN_STACKLEAK
+#ifdef CONFIG_KSTACK_ERASE
 	call	stackleak_erase_on_task_stack
 #endif
 
diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c
index 9ceda02507ca..b6af20bc300f 100644
--- a/arch/riscv/kernel/irq.c
+++ b/arch/riscv/kernel/irq.c
@@ -32,6 +32,40 @@ struct fwnode_handle *riscv_get_intc_hwnode(void)
 }
 EXPORT_SYMBOL_GPL(riscv_get_intc_hwnode);
 
+/**
+ * riscv_get_hart_index() - get hart index for interrupt delivery
+ * @fwnode: interrupt controller node
+ * @logical_index: index within the "interrupts-extended" property
+ * @hart_index: filled with the hart index to use
+ *
+ * RISC-V uses term "hart index" for its interrupt controllers, for the
+ * purpose of the interrupt routing to destination harts.
+ * It may be arbitrary numbers assigned to each destination hart in context
+ * of the particular interrupt domain.
+ *
+ * These numbers encoded in the optional property "riscv,hart-indexes"
+ * that should contain hart index for each interrupt destination in the same
+ * order as in the "interrupts-extended" property. If this property
+ * not exist, it assumed equal to the logical index, i.e. index within the
+ * "interrupts-extended" property.
+ *
+ * Return: error code
+ */
+int riscv_get_hart_index(struct fwnode_handle *fwnode, u32 logical_index,
+			 u32 *hart_index)
+{
+	static const char *prop_hart_index = "riscv,hart-indexes";
+	struct device_node *np = to_of_node(fwnode);
+
+	if (!np || !of_property_present(np, prop_hart_index)) {
+		*hart_index = logical_index;
+		return 0;
+	}
+
+	return of_property_read_u32_index(np, prop_hart_index,
+					  logical_index, hart_index);
+}
+
 #ifdef CONFIG_IRQ_STACKS
 #include <asm/irq_stack.h>
 
diff --git a/arch/riscv/kernel/pi/Makefile b/arch/riscv/kernel/pi/Makefile
index 81d69d45c06c..7dd15be69c90 100644
--- a/arch/riscv/kernel/pi/Makefile
+++ b/arch/riscv/kernel/pi/Makefile
@@ -2,7 +2,7 @@
 # This file was copied from arm64/kernel/pi/Makefile.
 
 KBUILD_CFLAGS	:= $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) -fpie \
-		   -Os -DDISABLE_BRANCH_PROFILING $(DISABLE_STACKLEAK_PLUGIN) \
+		   -Os -DDISABLE_BRANCH_PROFILING $(DISABLE_KSTACK_ERASE) \
 		   $(call cc-option,-mbranch-protection=none) \
 		   -I$(srctree)/scripts/dtc/libfdt -fno-stack-protector \
 		   -include $(srctree)/include/linux/hidden.h \
diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c
index ea67e9fb7a58..8e86305831ea 100644
--- a/arch/riscv/kernel/ptrace.c
+++ b/arch/riscv/kernel/ptrace.c
@@ -186,7 +186,7 @@ static int tagged_addr_ctrl_set(struct task_struct *target,
 
 static const struct user_regset riscv_user_regset[] = {
 	[REGSET_X] = {
-		.core_note_type = NT_PRSTATUS,
+		USER_REGSET_NOTE_TYPE(PRSTATUS),
 		.n = ELF_NGREG,
 		.size = sizeof(elf_greg_t),
 		.align = sizeof(elf_greg_t),
@@ -195,7 +195,7 @@ static const struct user_regset riscv_user_regset[] = {
 	},
 #ifdef CONFIG_FPU
 	[REGSET_F] = {
-		.core_note_type = NT_PRFPREG,
+		USER_REGSET_NOTE_TYPE(PRFPREG),
 		.n = ELF_NFPREG,
 		.size = sizeof(elf_fpreg_t),
 		.align = sizeof(elf_fpreg_t),
@@ -205,7 +205,7 @@ static const struct user_regset riscv_user_regset[] = {
 #endif
 #ifdef CONFIG_RISCV_ISA_V
 	[REGSET_V] = {
-		.core_note_type = NT_RISCV_VECTOR,
+		USER_REGSET_NOTE_TYPE(RISCV_VECTOR),
 		.align = 16,
 		.n = ((32 * RISCV_MAX_VLENB) +
 		      sizeof(struct __riscv_v_regset_state)) / sizeof(__u32),
@@ -216,7 +216,7 @@ static const struct user_regset riscv_user_regset[] = {
 #endif
 #ifdef CONFIG_RISCV_ISA_SUPM
 	[REGSET_TAGGED_ADDR_CTRL] = {
-		.core_note_type = NT_RISCV_TAGGED_ADDR_CTRL,
+		USER_REGSET_NOTE_TYPE(RISCV_TAGGED_ADDR_CTRL),
 		.n = 1,
 		.size = sizeof(long),
 		.align = sizeof(long),
@@ -380,7 +380,7 @@ static int compat_riscv_gpr_set(struct task_struct *target,
 
 static const struct user_regset compat_riscv_user_regset[] = {
 	[REGSET_X] = {
-		.core_note_type = NT_PRSTATUS,
+		USER_REGSET_NOTE_TYPE(PRSTATUS),
 		.n = ELF_NGREG,
 		.size = sizeof(compat_elf_greg_t),
 		.align = sizeof(compat_elf_greg_t),
@@ -389,7 +389,7 @@ static const struct user_regset compat_riscv_user_regset[] = {
 	},
 #ifdef CONFIG_FPU
 	[REGSET_F] = {
-		.core_note_type = NT_PRFPREG,
+		USER_REGSET_NOTE_TYPE(PRFPREG),
 		.n = ELF_NFPREG,
 		.size = sizeof(elf_fpreg_t),
 		.align = sizeof(elf_fpreg_t),