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-rw-r--r--arch/nios2/kernel/.gitignore1
-rw-r--r--arch/nios2/kernel/Makefile2
-rw-r--r--arch/nios2/kernel/cpuinfo.c2
-rw-r--r--arch/nios2/kernel/entry.S34
-rw-r--r--arch/nios2/kernel/irq.c5
-rw-r--r--arch/nios2/kernel/module.c1
-rw-r--r--arch/nios2/kernel/nios2_ksyms.c2
-rw-r--r--arch/nios2/kernel/process.c39
-rw-r--r--arch/nios2/kernel/ptrace.c62
-rw-r--r--arch/nios2/kernel/setup.c43
-rw-r--r--arch/nios2/kernel/signal.c33
-rw-r--r--arch/nios2/kernel/sys_nios2.c11
-rw-r--r--arch/nios2/kernel/syscall_table.c1
-rw-r--r--arch/nios2/kernel/traps.c26
-rw-r--r--arch/nios2/kernel/vmlinux.lds.S2
15 files changed, 126 insertions, 138 deletions
diff --git a/arch/nios2/kernel/.gitignore b/arch/nios2/kernel/.gitignore
index c5f676c3c224..bbb90f92d051 100644
--- a/arch/nios2/kernel/.gitignore
+++ b/arch/nios2/kernel/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
vmlinux.lds
diff --git a/arch/nios2/kernel/Makefile b/arch/nios2/kernel/Makefile
index 0b645e1e3158..78a913181fa1 100644
--- a/arch/nios2/kernel/Makefile
+++ b/arch/nios2/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for the nios2 linux kernel.
#
-extra-y += head.o
extra-y += vmlinux.lds
+obj-y += head.o
obj-y += cpuinfo.o
obj-y += entry.o
obj-y += insnemu.o
diff --git a/arch/nios2/kernel/cpuinfo.c b/arch/nios2/kernel/cpuinfo.c
index 203870c4b86d..338849c430a5 100644
--- a/arch/nios2/kernel/cpuinfo.c
+++ b/arch/nios2/kernel/cpuinfo.c
@@ -47,7 +47,7 @@ void __init setup_cpuinfo(void)
str = of_get_property(cpu, "altr,implementation", &len);
if (str)
- strlcpy(cpuinfo.cpu_impl, str, sizeof(cpuinfo.cpu_impl));
+ strscpy(cpuinfo.cpu_impl, str, sizeof(cpuinfo.cpu_impl));
else
strcpy(cpuinfo.cpu_impl, "<unknown>");
diff --git a/arch/nios2/kernel/entry.S b/arch/nios2/kernel/entry.S
index 1e515ccd698e..99f0a65e6234 100644
--- a/arch/nios2/kernel/entry.S
+++ b/arch/nios2/kernel/entry.S
@@ -185,6 +185,7 @@ ENTRY(handle_system_call)
ldw r5, PT_R5(sp)
local_restart:
+ stw r2, PT_ORIG_R2(sp)
/* Check that the requested system call is within limits */
movui r1, __NR_syscalls
bgeu r2, r1, ret_invsyscall
@@ -192,7 +193,6 @@ local_restart:
movhi r11, %hiadj(sys_call_table)
add r1, r1, r11
ldw r1, %lo(sys_call_table)(r1)
- beq r1, r0, ret_invsyscall
/* Check if we are being traced */
GET_THREAD_INFO r11
@@ -213,6 +213,9 @@ local_restart:
translate_rc_and_ret:
movi r1, 0
bge r2, zero, 3f
+ ldw r1, PT_ORIG_R2(sp)
+ addi r1, r1, 1
+ beq r1, zero, 3f
sub r2, zero, r2
movi r1, 1
3:
@@ -255,9 +258,9 @@ traced_system_call:
ldw r6, PT_R6(sp)
ldw r7, PT_R7(sp)
- /* Fetch the syscall function, we don't need to check the boundaries
- * since this is already done.
- */
+ /* Fetch the syscall function. */
+ movui r1, __NR_syscalls
+ bgeu r2, r1, traced_invsyscall
slli r1, r2, 2
movhi r11,%hiadj(sys_call_table)
add r1, r1, r11
@@ -276,6 +279,9 @@ traced_system_call:
translate_rc_and_ret2:
movi r1, 0
bge r2, zero, 4f
+ ldw r1, PT_ORIG_R2(sp)
+ addi r1, r1, 1
+ beq r1, zero, 4f
sub r2, zero, r2
movi r1, 1
4:
@@ -287,6 +293,11 @@ end_translate_rc_and_ret2:
RESTORE_SWITCH_STACK
br ret_from_exception
+ /* If the syscall number was invalid return ENOSYS */
+traced_invsyscall:
+ movi r2, -ENOSYS
+ br translate_rc_and_ret2
+
Luser_return:
GET_THREAD_INFO r11 /* get thread_info pointer */
ldw r10, TI_FLAGS(r11) /* get thread_info->flags */
@@ -336,9 +347,6 @@ external_interrupt:
/* skip if no interrupt is pending */
beq r12, r0, ret_from_interrupt
- movi r24, -1
- stw r24, PT_ORIG_R2(sp)
-
/*
* Process an external hardware interrupt.
*/
@@ -365,7 +373,7 @@ ENTRY(ret_from_interrupt)
ldw r1, PT_ESTATUS(sp) /* check if returning to kernel */
TSTBNZ r1, r1, ESTATUS_EU, Luser_return
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPTION
GET_THREAD_INFO r1
ldw r4, TI_PREEMPT_COUNT(r1)
bne r4, r0, restore_all
@@ -389,12 +397,10 @@ ENTRY(ret_from_interrupt)
*/
ENTRY(sys_clone)
SAVE_SWITCH_STACK
- addi sp, sp, -4
- stw r7, 0(sp) /* Pass 5th arg thru stack */
- mov r7, r6 /* 4th arg is 3rd of clone() */
- mov r6, zero /* 3rd arg always 0 */
- call do_fork
- addi sp, sp, 4
+ subi sp, sp, 4 /* make space for tls pointer */
+ stw r8, 0(sp) /* pass tls pointer (r8) via stack (5th argument) */
+ call nios2_clone
+ addi sp, sp, 4
RESTORE_SWITCH_STACK
ret
diff --git a/arch/nios2/kernel/irq.c b/arch/nios2/kernel/irq.c
index 5f3555ce4865..6b7890e5f7af 100644
--- a/arch/nios2/kernel/irq.c
+++ b/arch/nios2/kernel/irq.c
@@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
#include <linux/of.h>
static u32 ienable;
@@ -18,11 +19,9 @@ static u32 ienable;
asmlinkage void do_IRQ(int hwirq, struct pt_regs *regs)
{
struct pt_regs *oldregs = set_irq_regs(regs);
- int irq;
irq_enter();
- irq = irq_find_mapping(NULL, hwirq);
- generic_handle_irq(irq);
+ generic_handle_domain_irq(NULL, hwirq);
irq_exit();
set_irq_regs(oldregs);
diff --git a/arch/nios2/kernel/module.c b/arch/nios2/kernel/module.c
index e2e3f13f98d5..76e0a42d6e36 100644
--- a/arch/nios2/kernel/module.c
+++ b/arch/nios2/kernel/module.c
@@ -19,7 +19,6 @@
#include <linux/string.h>
#include <linux/kernel.h>
-#include <asm/pgtable.h>
#include <asm/cacheflush.h>
/*
diff --git a/arch/nios2/kernel/nios2_ksyms.c b/arch/nios2/kernel/nios2_ksyms.c
index 4e704046a150..54f7b23df1bf 100644
--- a/arch/nios2/kernel/nios2_ksyms.c
+++ b/arch/nios2/kernel/nios2_ksyms.c
@@ -8,9 +8,9 @@
#include <linux/export.h>
#include <linux/string.h>
+#include <linux/pgtable.h>
#include <asm/cacheflush.h>
-#include <asm/pgtable.h>
/* string functions */
diff --git a/arch/nios2/kernel/process.c b/arch/nios2/kernel/process.c
index 509e7855e8dc..f84021303f6a 100644
--- a/arch/nios2/kernel/process.c
+++ b/arch/nios2/kernel/process.c
@@ -33,7 +33,6 @@ EXPORT_SYMBOL(pm_power_off);
void arch_cpu_idle(void)
{
- local_irq_enable();
}
/*
@@ -100,21 +99,23 @@ void flush_thread(void)
{
}
-int copy_thread(unsigned long clone_flags,
- unsigned long usp, unsigned long arg, struct task_struct *p)
+int copy_thread(struct task_struct *p, const struct kernel_clone_args *args)
{
+ unsigned long clone_flags = args->flags;
+ unsigned long usp = args->stack;
+ unsigned long tls = args->tls;
struct pt_regs *childregs = task_pt_regs(p);
struct pt_regs *regs;
struct switch_stack *stack;
struct switch_stack *childstack =
((struct switch_stack *)childregs) - 1;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(args->fn)) {
memset(childstack, 0,
sizeof(struct switch_stack) + sizeof(struct pt_regs));
- childstack->r16 = usp; /* fn */
- childstack->r17 = arg;
+ childstack->r16 = (unsigned long) args->fn;
+ childstack->r17 = (unsigned long) args->fn_arg;
childstack->ra = (unsigned long) ret_from_kernel_thread;
childregs->estatus = STATUS_PIE;
childregs->sp = (unsigned long) childstack;
@@ -140,7 +141,7 @@ int copy_thread(unsigned long clone_flags,
/* Initialize tls register. */
if (clone_flags & CLONE_SETTLS)
- childstack->r23 = regs->r8;
+ childstack->r23 = tls;
return 0;
}
@@ -217,15 +218,12 @@ void dump(struct pt_regs *fp)
pr_emerg("\n\n");
}
-unsigned long get_wchan(struct task_struct *p)
+unsigned long __get_wchan(struct task_struct *p)
{
unsigned long fp, pc;
unsigned long stack_page;
int count = 0;
- if (!p || p == current || p->state == TASK_RUNNING)
- return 0;
-
stack_page = (unsigned long)p;
fp = ((struct switch_stack *)p->thread.ksp)->fp; /* ;dgt2 */
do {
@@ -252,10 +250,19 @@ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
regs->sp = sp;
}
-#include <linux/elfcore.h>
-
-/* Fill in the FPU structure for a core dump. */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *r)
+asmlinkage int nios2_clone(unsigned long clone_flags, unsigned long newsp,
+ int __user *parent_tidptr, int __user *child_tidptr,
+ unsigned long tls)
{
- return 0; /* Nios2 has no FPU and thus no FPU registers */
+ struct kernel_clone_args args = {
+ .flags = (lower_32_bits(clone_flags) & ~CSIGNAL),
+ .pidfd = parent_tidptr,
+ .child_tid = child_tidptr,
+ .parent_tid = parent_tidptr,
+ .exit_signal = (lower_32_bits(clone_flags) & CSIGNAL),
+ .stack = newsp,
+ .tls = tls,
+ };
+
+ return kernel_clone(&args);
}
diff --git a/arch/nios2/kernel/ptrace.c b/arch/nios2/kernel/ptrace.c
index de97bcb7dd44..9221c15972e6 100644
--- a/arch/nios2/kernel/ptrace.c
+++ b/arch/nios2/kernel/ptrace.c
@@ -15,51 +15,29 @@
#include <linux/regset.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
-#include <linux/tracehook.h>
#include <linux/uaccess.h>
#include <linux/user.h>
static int genregs_get(struct task_struct *target,
const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
+ struct membuf to)
{
const struct pt_regs *regs = task_pt_regs(target);
const struct switch_stack *sw = (struct switch_stack *)regs - 1;
- int ret = 0;
-
-#define REG_O_ZERO_RANGE(START, END) \
- if (!ret) \
- ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, \
- START * 4, (END * 4) + 4);
-
-#define REG_O_ONE(PTR, LOC) \
- if (!ret) \
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, PTR, \
- LOC * 4, (LOC * 4) + 4);
-#define REG_O_RANGE(PTR, START, END) \
- if (!ret) \
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, PTR, \
- START * 4, (END * 4) + 4);
-
- REG_O_ZERO_RANGE(PTR_R0, PTR_R0);
- REG_O_RANGE(&regs->r1, PTR_R1, PTR_R7);
- REG_O_RANGE(&regs->r8, PTR_R8, PTR_R15);
- REG_O_RANGE(sw, PTR_R16, PTR_R23);
- REG_O_ZERO_RANGE(PTR_R24, PTR_R25); /* et and bt */
- REG_O_ONE(&regs->gp, PTR_GP);
- REG_O_ONE(&regs->sp, PTR_SP);
- REG_O_ONE(&regs->fp, PTR_FP);
- REG_O_ONE(&regs->ea, PTR_EA);
- REG_O_ZERO_RANGE(PTR_BA, PTR_BA);
- REG_O_ONE(&regs->ra, PTR_RA);
- REG_O_ONE(&regs->ea, PTR_PC); /* use ea for PC */
- if (!ret)
- ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
- PTR_STATUS * 4, -1);
-
- return ret;
+ membuf_zero(&to, 4); // R0
+ membuf_write(&to, &regs->r1, 7 * 4); // R1..R7
+ membuf_write(&to, &regs->r8, 8 * 4); // R8..R15
+ membuf_write(&to, sw, 8 * 4); // R16..R23
+ membuf_zero(&to, 2 * 4); /* et and bt */
+ membuf_store(&to, regs->gp);
+ membuf_store(&to, regs->sp);
+ membuf_store(&to, regs->fp);
+ membuf_store(&to, regs->ea);
+ membuf_zero(&to, 4); // PTR_BA
+ membuf_store(&to, regs->ra);
+ membuf_store(&to, regs->ea); /* use ea for PC */
+ return membuf_zero(&to, (NUM_PTRACE_REG - PTR_PC) * 4);
}
/*
@@ -76,7 +54,7 @@ static int genregs_set(struct task_struct *target,
#define REG_IGNORE_RANGE(START, END) \
if (!ret) \
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, \
+ user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, \
START * 4, (END * 4) + 4);
#define REG_IN_ONE(PTR, LOC) \
@@ -102,8 +80,8 @@ static int genregs_set(struct task_struct *target,
REG_IN_ONE(&regs->ra, PTR_RA);
REG_IN_ONE(&regs->ea, PTR_PC); /* use ea for PC */
if (!ret)
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- PTR_STATUS * 4, -1);
+ user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+ PTR_STATUS * 4, -1);
return ret;
}
@@ -121,7 +99,7 @@ static const struct user_regset nios2_regsets[] = {
.n = NUM_PTRACE_REG,
.size = sizeof(unsigned long),
.align = sizeof(unsigned long),
- .get = genregs_get,
+ .regset_get = genregs_get,
.set = genregs_set,
}
};
@@ -155,7 +133,7 @@ asmlinkage int do_syscall_trace_enter(void)
int ret = 0;
if (test_thread_flag(TIF_SYSCALL_TRACE))
- ret = tracehook_report_syscall_entry(task_pt_regs(current));
+ ret = ptrace_report_syscall_entry(task_pt_regs(current));
return ret;
}
@@ -163,5 +141,5 @@ asmlinkage int do_syscall_trace_enter(void)
asmlinkage void do_syscall_trace_exit(void)
{
if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(task_pt_regs(current), 0);
+ ptrace_report_syscall_exit(task_pt_regs(current), 0);
}
diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
index 4cf35b09c0ec..da122a5fa43b 100644
--- a/arch/nios2/kernel/setup.c
+++ b/arch/nios2/kernel/setup.c
@@ -19,7 +19,6 @@
#include <linux/memblock.h>
#include <linux/initrd.h>
#include <linux/of_fdt.h>
-#include <linux/screen_info.h>
#include <asm/mmu_context.h>
#include <asm/sections.h>
@@ -32,16 +31,10 @@ EXPORT_SYMBOL(memory_start);
unsigned long memory_end;
EXPORT_SYMBOL(memory_end);
-unsigned long memory_size;
-
static struct pt_regs fake_regs = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0,
0};
-#ifdef CONFIG_VT
-struct screen_info screen_info;
-#endif
-
/* Copy a short hook instruction sequence to the exception address */
static inline void copy_exception_handler(unsigned int addr)
{
@@ -123,7 +116,7 @@ asmlinkage void __init nios2_boot_init(unsigned r4, unsigned r5, unsigned r6,
dtb_passed = r6;
if (r7)
- strlcpy(cmdline_passed, (char *)r7, COMMAND_LINE_SIZE);
+ strscpy(cmdline_passed, (char *)r7, COMMAND_LINE_SIZE);
}
#endif
@@ -131,41 +124,41 @@ asmlinkage void __init nios2_boot_init(unsigned r4, unsigned r5, unsigned r6,
#ifndef CONFIG_CMDLINE_FORCE
if (cmdline_passed[0])
- strlcpy(boot_command_line, cmdline_passed, COMMAND_LINE_SIZE);
+ strscpy(boot_command_line, cmdline_passed, COMMAND_LINE_SIZE);
#ifdef CONFIG_NIOS2_CMDLINE_IGNORE_DTB
else
- strlcpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+ strscpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
#endif
#endif
parse_early_param();
}
-void __init setup_arch(char **cmdline_p)
+static void __init find_limits(unsigned long *min, unsigned long *max_low,
+ unsigned long *max_high)
{
- int dram_start;
+ *max_low = PFN_DOWN(memblock_get_current_limit());
+ *min = PFN_UP(memblock_start_of_DRAM());
+ *max_high = PFN_DOWN(memblock_end_of_DRAM());
+}
+void __init setup_arch(char **cmdline_p)
+{
console_verbose();
- dram_start = memblock_start_of_DRAM();
- memory_size = memblock_phys_mem_size();
- memory_start = PAGE_ALIGN((unsigned long)__pa(_end));
- memory_end = (unsigned long) CONFIG_NIOS2_MEM_BASE + memory_size;
+ memory_start = memblock_start_of_DRAM();
+ memory_end = memblock_end_of_DRAM();
- init_mm.start_code = (unsigned long) _stext;
- init_mm.end_code = (unsigned long) _etext;
- init_mm.end_data = (unsigned long) _edata;
- init_mm.brk = (unsigned long) _end;
+ setup_initial_init_mm(_stext, _etext, _edata, _end);
init_task.thread.kregs = &fake_regs;
/* Keep a copy of command line */
*cmdline_p = boot_command_line;
- min_low_pfn = PFN_UP(memory_start);
- max_low_pfn = PFN_DOWN(memory_end);
+ find_limits(&min_low_pfn, &max_low_pfn, &max_pfn);
max_mapnr = max_low_pfn;
- memblock_reserve(dram_start, memory_start - dram_start);
+ memblock_reserve(__pa_symbol(_stext), _end - _stext);
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start) {
memblock_reserve(virt_to_phys((void *)initrd_start),
@@ -196,8 +189,4 @@ void __init setup_arch(char **cmdline_p)
* get kmalloc into gear
*/
paging_init();
-
-#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
}
diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c
index a42dd09c6578..a5b93a30c6eb 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -15,7 +15,7 @@
#include <linux/uaccess.h>
#include <linux/unistd.h>
#include <linux/personality.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <asm/ucontext.h>
#include <asm/cacheflush.h>
@@ -36,10 +36,10 @@ struct rt_sigframe {
static inline int rt_restore_ucontext(struct pt_regs *regs,
struct switch_stack *sw,
- struct ucontext *uc, int *pr2)
+ struct ucontext __user *uc, int *pr2)
{
int temp;
- unsigned long *gregs = uc->uc_mcontext.gregs;
+ unsigned long __user *gregs = uc->uc_mcontext.gregs;
int err;
/* Always make any pending restarted system calls return -EINTR */
@@ -102,10 +102,11 @@ asmlinkage int do_rt_sigreturn(struct switch_stack *sw)
{
struct pt_regs *regs = (struct pt_regs *)(sw + 1);
/* Verify, can we follow the stack back */
- struct rt_sigframe *frame = (struct rt_sigframe *) regs->sp;
+ struct rt_sigframe __user *frame;
sigset_t set;
int rval;
+ frame = (struct rt_sigframe __user *) regs->sp;
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
@@ -124,10 +125,10 @@ badframe:
return 0;
}
-static inline int rt_setup_ucontext(struct ucontext *uc, struct pt_regs *regs)
+static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs)
{
struct switch_stack *sw = (struct switch_stack *)regs - 1;
- unsigned long *gregs = uc->uc_mcontext.gregs;
+ unsigned long __user *gregs = uc->uc_mcontext.gregs;
int err = 0;
err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version);
@@ -162,8 +163,9 @@ static inline int rt_setup_ucontext(struct ucontext *uc, struct pt_regs *regs)
return err;
}
-static inline void *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
- size_t frame_size)
+static inline void __user *get_sigframe(struct ksignal *ksig,
+ struct pt_regs *regs,
+ size_t frame_size)
{
unsigned long usp;
@@ -174,13 +176,13 @@ static inline void *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
usp = sigsp(usp, ksig);
/* Verify, is it 32 or 64 bit aligned */
- return (void *)((usp - frame_size) & -8UL);
+ return (void __user *)((usp - frame_size) & -8UL);
}
static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs)
{
- struct rt_sigframe *frame;
+ struct rt_sigframe __user *frame;
int err = 0;
frame = get_sigframe(ksig, regs, sizeof(*frame));
@@ -240,7 +242,7 @@ static int do_signal(struct pt_regs *regs)
/*
* If we were from a system call, check for system call restarting...
*/
- if (regs->orig_r2 >= 0) {
+ if (regs->orig_r2 >= 0 && regs->r1) {
continue_addr = regs->ea;
restart_addr = continue_addr - 4;
retval = regs->r2;
@@ -252,6 +254,7 @@ static int do_signal(struct pt_regs *regs)
switch (retval) {
case ERESTART_RESTARTBLOCK:
restart = -2;
+ fallthrough;
case ERESTARTNOHAND:
case ERESTARTSYS:
case ERESTARTNOINTR:
@@ -261,6 +264,7 @@ static int do_signal(struct pt_regs *regs)
regs->ea = restart_addr;
break;
}
+ regs->orig_r2 = -1;
}
if (get_signal(&ksig)) {
@@ -305,7 +309,8 @@ asmlinkage int do_notify_resume(struct pt_regs *regs)
if (!user_mode(regs))
return 0;
- if (test_thread_flag(TIF_SIGPENDING)) {
+ if (test_thread_flag(TIF_SIGPENDING) ||
+ test_thread_flag(TIF_NOTIFY_SIGNAL)) {
int restart = do_signal(regs);
if (unlikely(restart)) {
@@ -316,8 +321,8 @@ asmlinkage int do_notify_resume(struct pt_regs *regs)
*/
return restart;
}
- } else if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
- tracehook_notify_resume(regs);
+ } else if (test_thread_flag(TIF_NOTIFY_RESUME))
+ resume_user_mode_work(regs);
return 0;
}
diff --git a/arch/nios2/kernel/sys_nios2.c b/arch/nios2/kernel/sys_nios2.c
index cd390ec4f88b..b1ca85699952 100644
--- a/arch/nios2/kernel/sys_nios2.c
+++ b/arch/nios2/kernel/sys_nios2.c
@@ -22,6 +22,7 @@ asmlinkage int sys_cacheflush(unsigned long addr, unsigned long len,
unsigned int op)
{
struct vm_area_struct *vma;
+ struct mm_struct *mm = current->mm;
if (len == 0)
return 0;
@@ -34,16 +35,22 @@ asmlinkage int sys_cacheflush(unsigned long addr, unsigned long len,
if (addr + len < addr)
return -EFAULT;
+ if (mmap_read_lock_killable(mm))
+ return -EINTR;
+
/*
* Verify that the specified address region actually belongs
* to this process.
*/
- vma = find_vma(current->mm, addr);
- if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end)
+ vma = find_vma(mm, addr);
+ if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end) {
+ mmap_read_unlock(mm);
return -EFAULT;
+ }
flush_cache_range(vma, addr, addr + len);
+ mmap_read_unlock(mm);
return 0;
}
diff --git a/arch/nios2/kernel/syscall_table.c b/arch/nios2/kernel/syscall_table.c
index 6176d63023c1..c2875a6dd5a4 100644
--- a/arch/nios2/kernel/syscall_table.c
+++ b/arch/nios2/kernel/syscall_table.c
@@ -13,5 +13,6 @@
#define __SYSCALL(nr, call) [nr] = (call),
void *sys_call_table[__NR_syscalls] = {
+ [0 ... __NR_syscalls-1] = sys_ni_syscall,
#include <asm/unistd.h>
};
diff --git a/arch/nios2/kernel/traps.c b/arch/nios2/kernel/traps.c
index 486db793923c..85ac49d64cf7 100644
--- a/arch/nios2/kernel/traps.c
+++ b/arch/nios2/kernel/traps.c
@@ -37,10 +37,10 @@ void die(const char *str, struct pt_regs *regs, long err)
show_regs(regs);
spin_unlock_irq(&die_lock);
/*
- * do_exit() should take care of panic'ing from an interrupt
+ * make_task_dead() should take care of panic'ing from an interrupt
* context so we don't handle it here
*/
- do_exit(err);
+ make_task_dead(err);
}
void _exception(int signo, struct pt_regs *regs, int code, unsigned long addr)
@@ -52,12 +52,13 @@ void _exception(int signo, struct pt_regs *regs, int code, unsigned long addr)
}
/*
- * The show_stack is an external API which we do not use ourselves.
+ * The show_stack() is external API which we do not use ourselves.
*/
int kstack_depth_to_print = 48;
-void show_stack(struct task_struct *task, unsigned long *stack)
+void show_stack(struct task_struct *task, unsigned long *stack,
+ const char *loglvl)
{
unsigned long *endstack, addr;
int i;
@@ -72,16 +73,16 @@ void show_stack(struct task_struct *task, unsigned long *stack)
addr = (unsigned long) stack;
endstack = (unsigned long *) PAGE_ALIGN(addr);
- pr_emerg("Stack from %08lx:", (unsigned long)stack);
+ printk("%sStack from %08lx:", loglvl, (unsigned long)stack);
for (i = 0; i < kstack_depth_to_print; i++) {
if (stack + 1 > endstack)
break;
if (i % 8 == 0)
- pr_emerg("\n ");
- pr_emerg(" %08lx", *stack++);
+ printk("%s\n ", loglvl);
+ printk("%s %08lx", loglvl, *stack++);
}
- pr_emerg("\nCall Trace:");
+ printk("%s\nCall Trace:", loglvl);
i = 0;
while (stack + 1 <= endstack) {
addr = *stack++;
@@ -97,16 +98,11 @@ void show_stack(struct task_struct *task, unsigned long *stack)
(addr <= (unsigned long) _etext))) {
if (i % 4 == 0)
pr_emerg("\n ");
- pr_emerg(" [<%08lx>]", addr);
+ printk("%s [<%08lx>]", loglvl, addr);
i++;
}
}
- pr_emerg("\n");
-}
-
-void __init trap_init(void)
-{
- /* Nothing to do here */
+ printk("%s\n", loglvl);
}
/* Breakpoint handler */
diff --git a/arch/nios2/kernel/vmlinux.lds.S b/arch/nios2/kernel/vmlinux.lds.S
index c55a7cfa1075..37b958055064 100644
--- a/arch/nios2/kernel/vmlinux.lds.S
+++ b/arch/nios2/kernel/vmlinux.lds.S
@@ -24,7 +24,6 @@ SECTIONS
.text : {
TEXT_TEXT
SCHED_TEXT
- CPUIDLE_TEXT
LOCK_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
@@ -58,6 +57,7 @@ SECTIONS
STABS_DEBUG
DWARF_DEBUG
+ ELF_DETAILS
DISCARDS
}
generated by cgit (git 2.34.1) at 2024-05-07 05:40:50 +0000