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-rw-r--r--arch/um/kernel/Makefile9
-rw-r--r--arch/um/kernel/init_task.c38
-rw-r--r--arch/um/kernel/irq.c9
-rw-r--r--arch/um/kernel/process.c16
-rw-r--r--arch/um/kernel/signal.c14
-rw-r--r--arch/um/kernel/skas/mmu.c1
-rw-r--r--arch/um/kernel/skas/syscall.c2
-rw-r--r--arch/um/kernel/smp.c2
-rw-r--r--arch/um/kernel/tlb.c1
-rw-r--r--arch/um/kernel/um_arch.c5
10 files changed, 34 insertions, 63 deletions
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index 492bc4c1b62..babe21826e3 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -3,13 +3,14 @@
# Licensed under the GPL
#
-CPPFLAGS_vmlinux.lds := -DSTART=$(LDS_START) \
- -DELF_ARCH=$(LDS_ELF_ARCH) \
- -DELF_FORMAT=$(LDS_ELF_FORMAT)
+CPPFLAGS_vmlinux.lds := -DSTART=$(LDS_START) \
+ -DELF_ARCH=$(LDS_ELF_ARCH) \
+ -DELF_FORMAT=$(LDS_ELF_FORMAT) \
+ $(LDS_EXTRA)
extra-y := vmlinux.lds
clean-files :=
-obj-y = config.o exec.o exitcode.o init_task.o irq.o ksyms.o mem.o \
+obj-y = config.o exec.o exitcode.o irq.o ksyms.o mem.o \
physmem.o process.o ptrace.o reboot.o sigio.o \
signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \
um_arch.o umid.o skas/
diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c
deleted file mode 100644
index ddc9698b66e..00000000000
--- a/arch/um/kernel/init_task.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,intel.linux}.com)
- * Licensed under the GPL
- */
-
-#include "linux/sched.h"
-#include "linux/init_task.h"
-#include "linux/fs.h"
-#include "linux/module.h"
-#include "linux/mqueue.h"
-#include "asm/uaccess.h"
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-
-union thread_union init_thread_union __init_task_data =
- { INIT_THREAD_INFO(init_task) };
-
-union thread_union cpu0_irqstack
- __attribute__((__section__(".data..init_irqstack"))) =
- { INIT_THREAD_INFO(init_task) };
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 71b8c947e5e..00506c3d5d6 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -297,6 +297,13 @@ unsigned int do_IRQ(int irq, struct uml_pt_regs *regs)
return 1;
}
+void um_free_irq(unsigned int irq, void *dev)
+{
+ free_irq_by_irq_and_dev(irq, dev);
+ free_irq(irq, dev);
+}
+EXPORT_SYMBOL(um_free_irq);
+
int um_request_irq(unsigned int irq, int fd, int type,
irq_handler_t handler,
unsigned long irqflags, const char * devname,
@@ -327,7 +334,6 @@ static void dummy(struct irq_data *d)
/* This is used for everything else than the timer. */
static struct irq_chip normal_irq_type = {
.name = "SIGIO",
- .release = free_irq_by_irq_and_dev,
.irq_disable = dummy,
.irq_enable = dummy,
.irq_ack = dummy,
@@ -335,7 +341,6 @@ static struct irq_chip normal_irq_type = {
static struct irq_chip SIGVTALRM_irq_type = {
.name = "SIGVTALRM",
- .release = free_irq_by_irq_and_dev,
.irq_disable = dummy,
.irq_enable = dummy,
.irq_ack = dummy,
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index f386d04a84a..3a2235e0abc 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -18,6 +18,7 @@
#include <linux/seq_file.h>
#include <linux/tick.h>
#include <linux/threads.h>
+#include <linux/tracehook.h>
#include <asm/current.h>
#include <asm/pgtable.h>
#include <asm/mmu_context.h>
@@ -88,11 +89,8 @@ static inline void set_current(struct task_struct *task)
extern void arch_switch_to(struct task_struct *to);
-void *_switch_to(void *prev, void *next, void *last)
+void *__switch_to(struct task_struct *from, struct task_struct *to)
{
- struct task_struct *from = prev;
- struct task_struct *to = next;
-
to->thread.prev_sched = from;
set_current(to);
@@ -111,15 +109,19 @@ void *_switch_to(void *prev, void *next, void *last)
} while (current->thread.saved_task);
return current->thread.prev_sched;
-
}
void interrupt_end(void)
{
if (need_resched())
schedule();
- if (test_tsk_thread_flag(current, TIF_SIGPENDING))
+ if (test_thread_flag(TIF_SIGPENDING))
do_signal();
+ if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
+ tracehook_notify_resume(&current->thread.regs);
+ if (current->replacement_session_keyring)
+ key_replace_session_keyring();
+ }
}
void exit_thread(void)
@@ -194,7 +196,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
if (current->thread.forking) {
memcpy(&p->thread.regs.regs, &regs->regs,
sizeof(p->thread.regs.regs));
- REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.gp, 0);
+ UPT_SET_SYSCALL_RETURN(&p->thread.regs.regs, 0);
if (sp != 0)
REGS_SP(p->thread.regs.regs.gp) = sp;
diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c
index fb12f4c5e64..187118fbe1b 100644
--- a/arch/um/kernel/signal.c
+++ b/arch/um/kernel/signal.c
@@ -29,9 +29,6 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr,
unsigned long sp;
int err;
- /* Always make any pending restarted system calls return -EINTR */
- current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
/* Did we come from a system call? */
if (PT_REGS_SYSCALL_NR(regs) >= 0) {
/* If so, check system call restarting.. */
@@ -77,15 +74,14 @@ static int kern_do_signal(struct pt_regs *regs)
{
struct k_sigaction ka_copy;
siginfo_t info;
- sigset_t *oldset;
int sig, handled_sig = 0;
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- oldset = &current->saved_sigmask;
- else
- oldset = &current->blocked;
-
while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
+ sigset_t *oldset;
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ oldset = &current->saved_sigmask;
+ else
+ oldset = &current->blocked;
handled_sig = 1;
/* Whee! Actually deliver the signal. */
if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) {
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index 4947b319f53..0a49ef0c2bf 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -103,7 +103,6 @@ int init_new_context(struct task_struct *task, struct mm_struct *mm)
void uml_setup_stubs(struct mm_struct *mm)
{
- struct page **pages;
int err, ret;
if (!skas_needs_stub)
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
index f5173e1ec3a..05fbeb480e0 100644
--- a/arch/um/kernel/skas/syscall.c
+++ b/arch/um/kernel/skas/syscall.c
@@ -34,7 +34,7 @@ void handle_syscall(struct uml_pt_regs *r)
result = -ENOSYS;
else result = EXECUTE_SYSCALL(syscall, regs);
- REGS_SET_SYSCALL_RETURN(r->gp, result);
+ UPT_SET_SYSCALL_RETURN(r, result);
syscall_trace(r, 1);
}
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
index 6f588e160fb..a02b7e9e6b9 100644
--- a/arch/um/kernel/smp.c
+++ b/arch/um/kernel/smp.c
@@ -140,7 +140,7 @@ void smp_prepare_boot_cpu(void)
set_cpu_online(smp_processor_id(), true);
}
-int __cpu_up(unsigned int cpu)
+int __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
cpu_set(cpu, smp_commenced_mask);
while (!cpu_online(cpu))
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index 7f3d4d86431..f819af951c1 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -75,6 +75,7 @@ static int do_ops(struct host_vm_change *hvc, int end,
default:
printk(KERN_ERR "Unknown op type %d in do_ops\n",
op->type);
+ BUG();
break;
}
}
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index ba00eae45aa..4db8770906c 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -10,6 +10,7 @@
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/utsname.h>
+#include <linux/sched.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/setup.h>
@@ -47,6 +48,10 @@ struct cpuinfo_um boot_cpu_data = {
.ipi_pipe = { -1, -1 }
};
+union thread_union cpu0_irqstack
+ __attribute__((__section__(".data..init_irqstack"))) =
+ { INIT_THREAD_INFO(init_task) };
+
unsigned long thread_saved_pc(struct task_struct *task)
{
/* FIXME: Need to look up userspace_pid by cpu */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-23 08:26:05 +0000