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-rw-r--r--arch/i386/defconfig2
-rw-r--r--arch/i386/kernel/crash.c2
-rw-r--r--arch/i386/kernel/ioport.c1
-rw-r--r--arch/i386/kernel/process.c50
-rw-r--r--arch/i386/kernel/ptrace.c5
-rw-r--r--arch/i386/kernel/setup.c7
-rw-r--r--arch/i386/kernel/time.c5
-rw-r--r--arch/i386/kernel/traps.c44
-rw-r--r--arch/i386/lib/usercopy.c2
-rw-r--r--arch/i386/oprofile/nmi_int.c5
-rw-r--r--arch/i386/pci/common.c4
-rw-r--r--arch/i386/pci/pci.h2
12 files changed, 71 insertions, 58 deletions
diff --git a/arch/i386/defconfig b/arch/i386/defconfig
index 1629c3ac9be..89ebb7a316a 100644
--- a/arch/i386/defconfig
+++ b/arch/i386/defconfig
@@ -197,7 +197,7 @@ CONFIG_PM=y
# CONFIG_PM_LEGACY is not set
# CONFIG_PM_DEBUG is not set
CONFIG_SOFTWARE_SUSPEND=y
-CONFIG_PM_STD_PARTITION="/dev/hda2"
+CONFIG_PM_STD_PARTITION=""
#
# ACPI (Advanced Configuration and Power Interface) Support
diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c
index 48f0f62f781..5b96f038367 100644
--- a/arch/i386/kernel/crash.c
+++ b/arch/i386/kernel/crash.c
@@ -90,7 +90,7 @@ static void crash_save_self(struct pt_regs *regs)
crash_save_this_cpu(regs, cpu);
}
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC)
static atomic_t waiting_for_crash_ipi;
static int crash_nmi_callback(struct pt_regs *regs, int cpu)
diff --git a/arch/i386/kernel/ioport.c b/arch/i386/kernel/ioport.c
index 79026f026b8..498e8bc197d 100644
--- a/arch/i386/kernel/ioport.c
+++ b/arch/i386/kernel/ioport.c
@@ -79,6 +79,7 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
memset(bitmap, 0xff, IO_BITMAP_BYTES);
t->io_bitmap_ptr = bitmap;
+ set_thread_flag(TIF_IO_BITMAP);
}
/*
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index 94e2c87edea..923bb292f47 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -359,16 +359,16 @@ EXPORT_SYMBOL(kernel_thread);
*/
void exit_thread(void)
{
- struct task_struct *tsk = current;
- struct thread_struct *t = &tsk->thread;
-
/* The process may have allocated an io port bitmap... nuke it. */
- if (unlikely(NULL != t->io_bitmap_ptr)) {
+ if (unlikely(test_thread_flag(TIF_IO_BITMAP))) {
+ struct task_struct *tsk = current;
+ struct thread_struct *t = &tsk->thread;
int cpu = get_cpu();
struct tss_struct *tss = &per_cpu(init_tss, cpu);
kfree(t->io_bitmap_ptr);
t->io_bitmap_ptr = NULL;
+ clear_thread_flag(TIF_IO_BITMAP);
/*
* Careful, clear this in the TSS too:
*/
@@ -387,6 +387,7 @@ void flush_thread(void)
memset(tsk->thread.debugreg, 0, sizeof(unsigned long)*8);
memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
+ clear_tsk_thread_flag(tsk, TIF_DEBUG);
/*
* Forget coprocessor state..
*/
@@ -431,7 +432,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long esp,
savesegment(gs,p->thread.gs);
tsk = current;
- if (unlikely(NULL != tsk->thread.io_bitmap_ptr)) {
+ if (unlikely(test_tsk_thread_flag(tsk, TIF_IO_BITMAP))) {
p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
if (!p->thread.io_bitmap_ptr) {
p->thread.io_bitmap_max = 0;
@@ -439,6 +440,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long esp,
}
memcpy(p->thread.io_bitmap_ptr, tsk->thread.io_bitmap_ptr,
IO_BITMAP_BYTES);
+ set_tsk_thread_flag(p, TIF_IO_BITMAP);
}
/*
@@ -533,10 +535,24 @@ int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
return 1;
}
-static inline void
-handle_io_bitmap(struct thread_struct *next, struct tss_struct *tss)
+static noinline void __switch_to_xtra(struct task_struct *next_p,
+ struct tss_struct *tss)
{
- if (!next->io_bitmap_ptr) {
+ struct thread_struct *next;
+
+ next = &next_p->thread;
+
+ if (test_tsk_thread_flag(next_p, TIF_DEBUG)) {
+ set_debugreg(next->debugreg[0], 0);
+ set_debugreg(next->debugreg[1], 1);
+ set_debugreg(next->debugreg[2], 2);
+ set_debugreg(next->debugreg[3], 3);
+ /* no 4 and 5 */
+ set_debugreg(next->debugreg[6], 6);
+ set_debugreg(next->debugreg[7], 7);
+ }
+
+ if (!test_tsk_thread_flag(next_p, TIF_IO_BITMAP)) {
/*
* Disable the bitmap via an invalid offset. We still cache
* the previous bitmap owner and the IO bitmap contents:
@@ -544,6 +560,7 @@ handle_io_bitmap(struct thread_struct *next, struct tss_struct *tss)
tss->io_bitmap_base = INVALID_IO_BITMAP_OFFSET;
return;
}
+
if (likely(next == tss->io_bitmap_owner)) {
/*
* Previous owner of the bitmap (hence the bitmap content)
@@ -671,20 +688,11 @@ struct task_struct fastcall * __switch_to(struct task_struct *prev_p, struct tas
set_iopl_mask(next->iopl);
/*
- * Now maybe reload the debug registers
+ * Now maybe handle debug registers and/or IO bitmaps
*/
- if (unlikely(next->debugreg[7])) {
- set_debugreg(next->debugreg[0], 0);
- set_debugreg(next->debugreg[1], 1);
- set_debugreg(next->debugreg[2], 2);
- set_debugreg(next->debugreg[3], 3);
- /* no 4 and 5 */
- set_debugreg(next->debugreg[6], 6);
- set_debugreg(next->debugreg[7], 7);
- }
-
- if (unlikely(prev->io_bitmap_ptr || next->io_bitmap_ptr))
- handle_io_bitmap(next, tss);
+ if (unlikely((task_thread_info(next_p)->flags & _TIF_WORK_CTXSW))
+ || test_tsk_thread_flag(prev_p, TIF_IO_BITMAP))
+ __switch_to_xtra(next_p, tss);
disable_tsc(prev_p, next_p);
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index fd7eaf7866e..d3db03f4085 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -468,8 +468,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
for(i=0; i<4; i++)
if ((0x5f54 >> ((data >> (16 + 4*i)) & 0xf)) & 1)
goto out_tsk;
+ if (data)
+ set_tsk_thread_flag(child, TIF_DEBUG);
+ else
+ clear_tsk_thread_flag(child, TIF_DEBUG);
}
-
addr -= (long) &dummy->u_debugreg;
addr = addr >> 2;
child->thread.debugreg[addr] = data;
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 08c00d20f16..f1682206d30 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -26,7 +26,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
-#include <linux/tty.h>
+#include <linux/screen_info.h>
#include <linux/ioport.h>
#include <linux/acpi.h>
#include <linux/apm_bios.h>
@@ -1327,7 +1327,10 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat
res->start = e820.map[i].addr;
res->end = res->start + e820.map[i].size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
- request_resource(&iomem_resource, res);
+ if (request_resource(&iomem_resource, res)) {
+ kfree(res);
+ continue;
+ }
if (e820.map[i].type == E820_RAM) {
/*
* We don't know which RAM region contains kernel data,
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 316421a7f56..8705c0f0578 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -206,15 +206,16 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
unsigned long get_cmos_time(void)
{
unsigned long retval;
+ unsigned long flags;
- spin_lock(&rtc_lock);
+ spin_lock_irqsave(&rtc_lock, flags);
if (efi_enabled)
retval = efi_get_time();
else
retval = mach_get_cmos_time();
- spin_unlock(&rtc_lock);
+ spin_unlock_irqrestore(&rtc_lock, flags);
return retval;
}
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 2bf8b55b91f..313ac1f7dc5 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -100,13 +100,13 @@ int register_die_notifier(struct notifier_block *nb)
vmalloc_sync_all();
return atomic_notifier_chain_register(&i386die_chain, nb);
}
-EXPORT_SYMBOL(register_die_notifier);
+EXPORT_SYMBOL(register_die_notifier); /* used modular by kdb */
int unregister_die_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_unregister(&i386die_chain, nb);
}
-EXPORT_SYMBOL(unregister_die_notifier);
+EXPORT_SYMBOL(unregister_die_notifier); /* used modular by kdb */
static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
{
@@ -324,35 +324,35 @@ void show_registers(struct pt_regs *regs)
static void handle_BUG(struct pt_regs *regs)
{
+ unsigned long eip = regs->eip;
unsigned short ud2;
- unsigned short line;
- char *file;
- char c;
- unsigned long eip;
-
- eip = regs->eip;
if (eip < PAGE_OFFSET)
- goto no_bug;
+ return;
if (__get_user(ud2, (unsigned short __user *)eip))
- goto no_bug;
+ return;
if (ud2 != 0x0b0f)
- goto no_bug;
- if (__get_user(line, (unsigned short __user *)(eip + 2)))
- goto bug;
- if (__get_user(file, (char * __user *)(eip + 4)) ||
- (unsigned long)file < PAGE_OFFSET || __get_user(c, file))
- file = "<bad filename>";
+ return;
printk(KERN_EMERG "------------[ cut here ]------------\n");
- printk(KERN_EMERG "kernel BUG at %s:%d!\n", file, line);
-no_bug:
- return;
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+ do {
+ unsigned short line;
+ char *file;
+ char c;
- /* Here we know it was a BUG but file-n-line is unavailable */
-bug:
- printk(KERN_EMERG "Kernel BUG\n");
+ if (__get_user(line, (unsigned short __user *)(eip + 2)))
+ break;
+ if (__get_user(file, (char * __user *)(eip + 4)) ||
+ (unsigned long)file < PAGE_OFFSET || __get_user(c, file))
+ file = "<bad filename>";
+
+ printk(KERN_EMERG "kernel BUG at %s:%d!\n", file, line);
+ return;
+ } while (0);
+#endif
+ printk(KERN_EMERG "Kernel BUG at [verbose debug info unavailable]\n");
}
/* This is gone through when something in the kernel
diff --git a/arch/i386/lib/usercopy.c b/arch/i386/lib/usercopy.c
index 4b75212ab6d..efc7e7d5f4d 100644
--- a/arch/i386/lib/usercopy.c
+++ b/arch/i386/lib/usercopy.c
@@ -843,7 +843,6 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr
unsigned long
copy_to_user(void __user *to, const void *from, unsigned long n)
{
- might_sleep();
BUG_ON((long) n < 0);
if (access_ok(VERIFY_WRITE, to, n))
n = __copy_to_user(to, from, n);
@@ -870,7 +869,6 @@ EXPORT_SYMBOL(copy_to_user);
unsigned long
copy_from_user(void *to, const void __user *from, unsigned long n)
{
- might_sleep();
BUG_ON((long) n < 0);
if (access_ok(VERIFY_READ, from, n))
n = __copy_from_user(to, from, n);
diff --git a/arch/i386/oprofile/nmi_int.c b/arch/i386/oprofile/nmi_int.c
index fa8a37bcb39..c8c1df8ff2b 100644
--- a/arch/i386/oprofile/nmi_int.c
+++ b/arch/i386/oprofile/nmi_int.c
@@ -13,6 +13,7 @@
#include <linux/oprofile.h>
#include <linux/sysdev.h>
#include <linux/slab.h>
+#include <linux/moduleparam.h>
#include <asm/nmi.h>
#include <asm/msr.h>
#include <asm/apic.h>
@@ -296,12 +297,14 @@ static int nmi_create_files(struct super_block * sb, struct dentry * root)
return 0;
}
+static int p4force;
+module_param(p4force, int, 0);
static int __init p4_init(char ** cpu_type)
{
__u8 cpu_model = boot_cpu_data.x86_model;
- if (cpu_model > 4)
+ if (!p4force && (cpu_model > 6 || cpu_model == 5))
return 0;
#ifndef CONFIG_SMP
diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index c624b61e110..0a362e3aeac 100644
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -17,10 +17,6 @@
#include "pci.h"
-#ifdef CONFIG_PCI_BIOS
-extern void pcibios_sort(void);
-#endif
-
unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
PCI_PROBE_MMCONF;
diff --git a/arch/i386/pci/pci.h b/arch/i386/pci/pci.h
index 12bf3d8dda2..bf4e7933538 100644
--- a/arch/i386/pci/pci.h
+++ b/arch/i386/pci/pci.h
@@ -84,4 +84,4 @@ extern int pci_conf1_read(unsigned int seg, unsigned int bus,
extern void pci_direct_init(void);
extern void pci_pcbios_init(void);
extern void pci_mmcfg_init(void);
-
+extern void pcibios_sort(void);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-07 08:24:54 +0000