Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/nios2/kernel/.gitignore b/arch/nios2/kernel/.gitignore
index c5f676c..bbb90f9 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/entry.S b/arch/nios2/kernel/entry.S
index 1e515cc..0794cd7 100644
--- a/arch/nios2/kernel/entry.S
+++ b/arch/nios2/kernel/entry.S
@@ -365,7 +365,7 @@
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 +389,10 @@
*/
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/module.c b/arch/nios2/kernel/module.c
index e2e3f13..76e0a42 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 4e70404..54f7b23 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 509e785..50b4eb1 100644
--- a/arch/nios2/kernel/process.c
+++ b/arch/nios2/kernel/process.c
@@ -33,7 +33,7 @@
void arch_cpu_idle(void)
{
- local_irq_enable();
+ raw_local_irq_enable();
}
/*
@@ -100,8 +100,8 @@
{
}
-int copy_thread(unsigned long clone_flags,
- unsigned long usp, unsigned long arg, struct task_struct *p)
+int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg,
+ struct task_struct *p, unsigned long tls)
{
struct pt_regs *childregs = task_pt_regs(p);
struct pt_regs *regs;
@@ -140,7 +140,7 @@
/* Initialize tls register. */
if (clone_flags & CLONE_SETTLS)
- childstack->r23 = regs->r8;
+ childstack->r23 = tls;
return 0;
}
@@ -252,10 +252,19 @@
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 de97bcb..a6ea9e1 100644
--- a/arch/nios2/kernel/ptrace.c
+++ b/arch/nios2/kernel/ptrace.c
@@ -21,45 +21,24 @@
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(®s->r1, PTR_R1, PTR_R7);
- REG_O_RANGE(®s->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(®s->gp, PTR_GP);
- REG_O_ONE(®s->sp, PTR_SP);
- REG_O_ONE(®s->fp, PTR_FP);
- REG_O_ONE(®s->ea, PTR_EA);
- REG_O_ZERO_RANGE(PTR_BA, PTR_BA);
- REG_O_ONE(®s->ra, PTR_RA);
- REG_O_ONE(®s->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, ®s->r1, 7 * 4); // R1..R7
+ membuf_write(&to, ®s->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);
}
/*
@@ -121,7 +100,7 @@
.n = NUM_PTRACE_REG,
.size = sizeof(unsigned long),
.align = sizeof(unsigned long),
- .get = genregs_get,
+ .regset_get = genregs_get,
.set = genregs_set,
}
};
diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
index 4cf35b0..3c6e3c8 100644
--- a/arch/nios2/kernel/setup.c
+++ b/arch/nios2/kernel/setup.c
@@ -196,8 +196,4 @@
* 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 a42dd09..cf2dca2 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -252,6 +252,7 @@
switch (retval) {
case ERESTART_RESTARTBLOCK:
restart = -2;
+ fallthrough;
case ERESTARTNOHAND:
case ERESTARTSYS:
case ERESTARTNOINTR:
@@ -316,7 +317,7 @@
*/
return restart;
}
- } else if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
+ } else if (test_thread_flag(TIF_NOTIFY_RESUME))
tracehook_notify_resume(regs);
return 0;
diff --git a/arch/nios2/kernel/sys_nios2.c b/arch/nios2/kernel/sys_nios2.c
index cd390ec..b1ca856 100644
--- a/arch/nios2/kernel/sys_nios2.c
+++ b/arch/nios2/kernel/sys_nios2.c
@@ -22,6 +22,7 @@
unsigned int op)
{
struct vm_area_struct *vma;
+ struct mm_struct *mm = current->mm;
if (len == 0)
return 0;
@@ -34,16 +35,22 @@
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/traps.c b/arch/nios2/kernel/traps.c
index 486db79..b172da4 100644
--- a/arch/nios2/kernel/traps.c
+++ b/arch/nios2/kernel/traps.c
@@ -52,12 +52,13 @@
}
/*
- * 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 @@
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++;
@@ -97,11 +98,11 @@
(addr <= (unsigned long) _etext))) {
if (i % 4 == 0)
pr_emerg("\n ");
- pr_emerg(" [<%08lx>]", addr);
+ printk("%s [<%08lx>]", loglvl, addr);
i++;
}
}
- pr_emerg("\n");
+ printk("%s\n", loglvl);
}
void __init trap_init(void)
diff --git a/arch/nios2/kernel/vmlinux.lds.S b/arch/nios2/kernel/vmlinux.lds.S
index 6ad64f1..126e114 100644
--- a/arch/nios2/kernel/vmlinux.lds.S
+++ b/arch/nios2/kernel/vmlinux.lds.S
@@ -49,8 +49,8 @@
__init_end = .;
_sdata = .;
- RO_DATA_SECTION(PAGE_SIZE)
- RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+ RO_DATA(PAGE_SIZE)
+ RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
_edata = .;
BSS_SECTION(0, 0, 0)
@@ -58,7 +58,7 @@
STABS_DEBUG
DWARF_DEBUG
- NOTES
+ ELF_DETAILS
DISCARDS
}