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Merge branch 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6

Browse Source 
* 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] replace kmalloc+memset with kzalloc
  [IA64] resolve name clash by renaming is_available_memory()
  [IA64] Need export for csum_ipv6_magic
  [IA64] Fix DISCONTIGMEM without VIRTUAL_MEM_MAP
  [PATCH] Add support for type argument in PAL_GET_PSTATE
  [IA64] tidy up return value of ip_fast_csum
  [IA64] implement csum_ipv6_magic for ia64.
  [IA64] More Itanium PAL spec updates
  [IA64] Update processor_info features
  [IA64] Add se bit to Processor State Parameter structure
  [IA64] Add dp bit to cache and bus check structs
  [IA64] SN: Correctly update smp_affinty mask
  [IA64] sparse cleanups
  [IA64] IA64 Kexec/kdump
This commit is contained in:
Linus Torvalds
2006-12-07 15:39:22 -08:00
parent 7f3af60e5a 52fd91088b
commit 6ee7e78e7c
34 changed files with 1146 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/ia64/kernel/Makefile
View File

@ -28,6 +28,7 @@ obj-$(CONFIG_IA64_CYCLONE) += cyclone.o
obj-$(CONFIG_CPU_FREQ) += cpufreq/
obj-$(CONFIG_IA64_MCA_RECOVERY) += mca_recovery.o
obj-$(CONFIG_KPROBES) += kprobes.o jprobes.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o crash.o
obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR) += uncached.o
obj-$(CONFIG_AUDIT) += audit.o
obj-$(CONFIG_PCI_MSI) += msi_ia64.o

11
arch/ia64/kernel/cpufreq/acpi-cpufreq.c
View File

@ -68,7 +68,8 @@ processor_get_pstate (
dprintk("processor_get_pstate\n");
retval = ia64_pal_get_pstate(&pstate_index);
retval = ia64_pal_get_pstate(&pstate_index,
PAL_GET_PSTATE_TYPE_INSTANT);
*value = (u32) pstate_index;
if (retval)
@ -91,7 +92,7 @@ extract_clock (
dprintk("extract_clock\n");
for (i = 0; i < data->acpi_data.state_count; i++) {
if (value >= data->acpi_data.states[i].control)
if (value == data->acpi_data.states[i].status)
return data->acpi_data.states[i].core_frequency;
}
return data->acpi_data.states[i-1].core_frequency;
@ -117,11 +118,7 @@ processor_get_freq (
goto migrate_end;
}
/*
* processor_get_pstate gets the average frequency since the
* last get. So, do two PAL_get_freq()...
*/
ret = processor_get_pstate(&value);
/* processor_get_pstate gets the instantaneous frequency */
ret = processor_get_pstate(&value);
if (ret) {

245
arch/ia64/kernel/crash.c Normal file
View File

@ -0,0 +1,245 @@
/*
* arch/ia64/kernel/crash.c
*
* Architecture specific (ia64) functions for kexec based crash dumps.
*
* Created by: Khalid Aziz <khalid.aziz@hp.com>
* Copyright (C) 2005 Hewlett-Packard Development Company, L.P.
* Copyright (C) 2005 Intel Corp Zou Nan hai <nanhai.zou@intel.com>
*
*/
#include <linux/smp.h>
#include <linux/delay.h>
#include <linux/crash_dump.h>
#include <linux/bootmem.h>
#include <linux/kexec.h>
#include <linux/elfcore.h>
#include <linux/sysctl.h>
#include <linux/init.h>
#include <asm/kdebug.h>
#include <asm/mca.h>
#include <asm/uaccess.h>
int kdump_status[NR_CPUS];
atomic_t kdump_cpu_freezed;
atomic_t kdump_in_progress;
int kdump_on_init = 1;
ssize_t
copy_oldmem_page(unsigned long pfn, char *buf,
size_t csize, unsigned long offset, int userbuf)
{
void *vaddr;
if (!csize)
return 0;
vaddr = __va(pfn<<PAGE_SHIFT);
if (userbuf) {
if (copy_to_user(buf, (vaddr + offset), csize)) {
return -EFAULT;
}
} else
memcpy(buf, (vaddr + offset), csize);
return csize;
}
static inline Elf64_Word
*append_elf_note(Elf64_Word *buf, char *name, unsigned type, void *data,
size_t data_len)
{
struct elf_note *note = (struct elf_note *)buf;
note->n_namesz = strlen(name) + 1;
note->n_descsz = data_len;
note->n_type = type;
buf += (sizeof(*note) + 3)/4;
memcpy(buf, name, note->n_namesz);
buf += (note->n_namesz + 3)/4;
memcpy(buf, data, data_len);
buf += (data_len + 3)/4;
return buf;
}
static void
final_note(void *buf)
{
memset(buf, 0, sizeof(struct elf_note));
}
extern void ia64_dump_cpu_regs(void *);
static DEFINE_PER_CPU(struct elf_prstatus, elf_prstatus);
void
crash_save_this_cpu()
{
void *buf;
unsigned long cfm, sof, sol;
int cpu = smp_processor_id();
struct elf_prstatus *prstatus = &per_cpu(elf_prstatus, cpu);
elf_greg_t *dst = (elf_greg_t *)&(prstatus->pr_reg);
memset(prstatus, 0, sizeof(*prstatus));
prstatus->pr_pid = current->pid;
ia64_dump_cpu_regs(dst);
cfm = dst[43];
sol = (cfm >> 7) & 0x7f;
sof = cfm & 0x7f;
dst[46] = (unsigned long)ia64_rse_skip_regs((unsigned long *)dst[46],
sof - sol);
buf = (u64 *) per_cpu_ptr(crash_notes, cpu);
if (!buf)
return;
buf = append_elf_note(buf, "CORE", NT_PRSTATUS, prstatus,
sizeof(*prstatus));
final_note(buf);
}
static int
kdump_wait_cpu_freeze(void)
{
int cpu_num = num_online_cpus() - 1;
int timeout = 1000;
while(timeout-- > 0) {
if (atomic_read(&kdump_cpu_freezed) == cpu_num)
return 0;
udelay(1000);
}
return 1;
}
void
machine_crash_shutdown(struct pt_regs *pt)
{
/* This function is only called after the system
* has paniced or is otherwise in a critical state.
* The minimum amount of code to allow a kexec'd kernel
* to run successfully needs to happen here.
*
* In practice this means shooting down the other cpus in
* an SMP system.
*/
kexec_disable_iosapic();
#ifdef CONFIG_SMP
kdump_smp_send_stop();
if (kdump_wait_cpu_freeze() && kdump_on_init) {
//not all cpu response to IPI, send INIT to freeze them
kdump_smp_send_init();
}
#endif
}
static void
machine_kdump_on_init(void)
{
local_irq_disable();
kexec_disable_iosapic();
machine_kexec(ia64_kimage);
}
void
kdump_cpu_freeze(struct unw_frame_info *info, void *arg)
{
int cpuid;
local_irq_disable();
cpuid = smp_processor_id();
crash_save_this_cpu();
current->thread.ksp = (__u64)info->sw - 16;
atomic_inc(&kdump_cpu_freezed);
kdump_status[cpuid] = 1;
mb();
if (cpuid == 0) {
for (;;)
cpu_relax();
} else
ia64_jump_to_sal(&sal_boot_rendez_state[cpuid]);
}
static int
kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data)
{
struct ia64_mca_notify_die *nd;
struct die_args *args = data;
if (!kdump_on_init)
return NOTIFY_DONE;
if (val != DIE_INIT_MONARCH_ENTER &&
val != DIE_INIT_SLAVE_ENTER &&
val != DIE_MCA_RENDZVOUS_LEAVE &&
val != DIE_MCA_MONARCH_LEAVE)
return NOTIFY_DONE;
nd = (struct ia64_mca_notify_die *)args->err;
/* Reason code 1 means machine check rendezous*/
if ((val == DIE_INIT_MONARCH_ENTER || DIE_INIT_SLAVE_ENTER) &&
nd->sos->rv_rc == 1)
return NOTIFY_DONE;
switch (val) {
case DIE_INIT_MONARCH_ENTER:
machine_kdump_on_init();
break;
case DIE_INIT_SLAVE_ENTER:
unw_init_running(kdump_cpu_freeze, NULL);
break;
case DIE_MCA_RENDZVOUS_LEAVE:
if (atomic_read(&kdump_in_progress))
unw_init_running(kdump_cpu_freeze, NULL);
break;
case DIE_MCA_MONARCH_LEAVE:
/* die_register->signr indicate if MCA is recoverable */
if (!args->signr)
machine_kdump_on_init();
break;
}
return NOTIFY_DONE;
}
#ifdef CONFIG_SYSCTL
static ctl_table kdump_on_init_table[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "kdump_on_init",
.data = &kdump_on_init,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{ .ctl_name = 0 }
};
static ctl_table sys_table[] = {
{
.ctl_name = CTL_KERN,
.procname = "kernel",
.mode = 0555,
.child = kdump_on_init_table,
},
{ .ctl_name = 0 }
};
#endif
static int
machine_crash_setup(void)
{
char *from = strstr(saved_command_line, "elfcorehdr=");
static struct notifier_block kdump_init_notifier_nb = {
.notifier_call = kdump_init_notifier,
};
int ret;
if (from)
elfcorehdr_addr = memparse(from+11, &from);
saved_max_pfn = (unsigned long)-1;
if((ret = register_die_notifier(&kdump_init_notifier_nb)) != 0)
return ret;
#ifdef CONFIG_SYSCTL
register_sysctl_table(sys_table, 0);
#endif
return 0;
}
__initcall(machine_crash_setup);

71
arch/ia64/kernel/efi.c
View File

@ -26,6 +26,7 @@
#include <linux/types.h>
#include <linux/time.h>
#include <linux/efi.h>
#include <linux/kexec.h>
#include <asm/io.h>
#include <asm/kregs.h>
@ -41,7 +42,7 @@ extern efi_status_t efi_call_phys (void *, ...);
struct efi efi;
EXPORT_SYMBOL(efi);
static efi_runtime_services_t *runtime;
static unsigned long mem_limit = ~0UL, max_addr = ~0UL;
static unsigned long mem_limit = ~0UL, max_addr = ~0UL, min_addr = 0UL;
#define efi_call_virt(f, args...) (*(f))(args)
@ -224,7 +225,7 @@ efi_gettimeofday (struct timespec *ts)
}
static int
is_available_memory (efi_memory_desc_t *md)
is_memory_available (efi_memory_desc_t *md)
{
if (!(md->attribute & EFI_MEMORY_WB))
return 0;
@ -421,6 +422,8 @@ efi_init (void)
mem_limit = memparse(cp + 4, &cp);
} else if (memcmp(cp, "max_addr=", 9) == 0) {
max_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp));
} else if (memcmp(cp, "min_addr=", 9) == 0) {
min_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp));
} else {
while (*cp != ' ' && *cp)
++cp;
@ -428,6 +431,8 @@ efi_init (void)
++cp;
}
}
if (min_addr != 0UL)
printk(KERN_INFO "Ignoring memory below %luMB\n", min_addr >> 20);
if (max_addr != ~0UL)
printk(KERN_INFO "Ignoring memory above %luMB\n", max_addr >> 20);
@ -887,14 +892,15 @@ find_memmap_space (void)
}
contig_high = GRANULEROUNDDOWN(contig_high);
}
if (!is_available_memory(md) || md->type == EFI_LOADER_DATA)
if (!is_memory_available(md) || md->type == EFI_LOADER_DATA)
continue;
/* Round ends inward to granule boundaries */
as = max(contig_low, md->phys_addr);
ae = min(contig_high, efi_md_end(md));
/* keep within max_addr= command line arg */
/* keep within max_addr= and min_addr= command line arg */
as = max(as, min_addr);
ae = min(ae, max_addr);
if (ae <= as)
continue;
@ -962,7 +968,7 @@ efi_memmap_init(unsigned long *s, unsigned long *e)
}
contig_high = GRANULEROUNDDOWN(contig_high);
}
if (!is_available_memory(md))
if (!is_memory_available(md))
continue;
/*
@ -1004,7 +1010,8 @@ efi_memmap_init(unsigned long *s, unsigned long *e)
} else
ae = efi_md_end(md);
/* keep within max_addr= command line arg */
/* keep within max_addr= and min_addr= command line arg */
as = max(as, min_addr);
ae = min(ae, max_addr);
if (ae <= as)
continue;
@ -1116,6 +1123,58 @@ efi_initialize_iomem_resources(struct resource *code_resource,
*/
insert_resource(res, code_resource);
insert_resource(res, data_resource);
#ifdef CONFIG_KEXEC
insert_resource(res, &efi_memmap_res);
insert_resource(res, &boot_param_res);
if (crashk_res.end > crashk_res.start)
insert_resource(res, &crashk_res);
#endif
}
}
}
#ifdef CONFIG_KEXEC
/* find a block of memory aligned to 64M exclude reserved regions
rsvd_regions are sorted
*/
unsigned long
kdump_find_rsvd_region (unsigned long size,
struct rsvd_region *r, int n)
{
int i;
u64 start, end;
u64 alignment = 1UL << _PAGE_SIZE_64M;
void *efi_map_start, *efi_map_end, *p;
efi_memory_desc_t *md;
u64 efi_desc_size;
efi_map_start = __va(ia64_boot_param->efi_memmap);
efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
efi_desc_size = ia64_boot_param->efi_memdesc_size;
for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
md = p;
if (!efi_wb(md))
continue;
start = ALIGN(md->phys_addr, alignment);
end = efi_md_end(md);
for (i = 0; i < n; i++) {
if (__pa(r[i].start) >= start && __pa(r[i].end) < end) {
if (__pa(r[i].start) > start + size)
return start;
start = ALIGN(__pa(r[i].end), alignment);
if (i < n-1 && __pa(r[i+1].start) < start + size)
continue;
else
break;
}
}
if (end > start + size)
return start;
}
printk(KERN_WARNING "Cannot reserve 0x%lx byte of memory for crashdump\n",
size);
return ~0UL;
}
#endif

2
arch/ia64/kernel/entry.S
View File

@ -1575,7 +1575,7 @@ sys_call_table:
data8 sys_mq_timedreceive // 1265
data8 sys_mq_notify
data8 sys_mq_getsetattr
data8 sys_ni_syscall // reserved for kexec_load
data8 sys_kexec_load
data8 sys_ni_syscall // reserved for vserver
data8 sys_waitid // 1270
data8 sys_add_key

1
arch/ia64/kernel/ia64_ksyms.c
View File

@ -14,6 +14,7 @@ EXPORT_SYMBOL(strlen);
#include <asm/checksum.h>
EXPORT_SYMBOL(ip_fast_csum); /* hand-coded assembly */
EXPORT_SYMBOL(csum_ipv6_magic);
#include <asm/semaphore.h>
EXPORT_SYMBOL(__down);

21
arch/ia64/kernel/iosapic.c
View File

@ -288,6 +288,27 @@ nop (unsigned int irq)
/* do nothing... */
}
#ifdef CONFIG_KEXEC
void
kexec_disable_iosapic(void)
{
struct iosapic_intr_info *info;
struct iosapic_rte_info *rte;
u8 vec = 0;
for (info = iosapic_intr_info; info <
iosapic_intr_info + IA64_NUM_VECTORS; ++info, ++vec) {
list_for_each_entry(rte, &info->rtes,
rte_list) {
iosapic_write(rte->addr,
IOSAPIC_RTE_LOW(rte->rte_index),
IOSAPIC_MASK|vec);
iosapic_eoi(rte->addr, vec);
}
}
}
#endif
static void
mask_irq (unsigned int irq)
{

2
arch/ia64/kernel/kprobes.c
View File

@ -851,7 +851,7 @@ static void ia64_get_bsp_cfm(struct unw_frame_info *info, void *arg)
return;
}
} while (unw_unwind(info) >= 0);
lp->bsp = 0;
lp->bsp = NULL;
lp->cfm = 0;
return;
}

133
arch/ia64/kernel/machine_kexec.c Normal file
View File

@ -0,0 +1,133 @@
/*
* arch/ia64/kernel/machine_kexec.c
*
* Handle transition of Linux booting another kernel
* Copyright (C) 2005 Hewlett-Packard Development Comapny, L.P.
* Copyright (C) 2005 Khalid Aziz <khalid.aziz@hp.com>
* Copyright (C) 2006 Intel Corp, Zou Nan hai <nanhai.zou@intel.com>
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#include <linux/mm.h>
#include <linux/kexec.h>
#include <linux/cpu.h>
#include <linux/irq.h>
#include <asm/mmu_context.h>
#include <asm/setup.h>
#include <asm/delay.h>
#include <asm/meminit.h>
typedef void (*relocate_new_kernel_t)(unsigned long, unsigned long,
struct ia64_boot_param *, unsigned long);
struct kimage *ia64_kimage;
struct resource efi_memmap_res = {
.name = "EFI Memory Map",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
};
struct resource boot_param_res = {
.name = "Boot parameter",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
};
/*
* Do what every setup is needed on image and the
* reboot code buffer to allow us to avoid allocations
* later.
*/
int machine_kexec_prepare(struct kimage *image)
{
void *control_code_buffer;
const unsigned long *func;
func = (unsigned long *)&relocate_new_kernel;
/* Pre-load control code buffer to minimize work in kexec path */
control_code_buffer = page_address(image->control_code_page);
memcpy((void *)control_code_buffer, (const void *)func[0],
relocate_new_kernel_size);
flush_icache_range((unsigned long)control_code_buffer,
(unsigned long)control_code_buffer + relocate_new_kernel_size);
ia64_kimage = image;
return 0;
}
void machine_kexec_cleanup(struct kimage *image)
{
}
void machine_shutdown(void)
{
int cpu;
for_each_online_cpu(cpu) {
if (cpu != smp_processor_id())
cpu_down(cpu);
}
kexec_disable_iosapic();
}
/*
* Do not allocate memory (or fail in any way) in machine_kexec().
* We are past the point of no return, committed to rebooting now.
*/
extern void *efi_get_pal_addr(void);
static void ia64_machine_kexec(struct unw_frame_info *info, void *arg)
{
struct kimage *image = arg;
relocate_new_kernel_t rnk;
void *pal_addr = efi_get_pal_addr();
unsigned long code_addr = (unsigned long)page_address(image->control_code_page);
unsigned long vector;
int ii;
if (image->type == KEXEC_TYPE_CRASH) {
crash_save_this_cpu();
current->thread.ksp = (__u64)info->sw - 16;
}
/* Interrupts aren't acceptable while we reboot */
local_irq_disable();
/* Mask CMC and Performance Monitor interrupts */
ia64_setreg(_IA64_REG_CR_PMV, 1 << 16);
ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16);
/* Mask ITV and Local Redirect Registers */
ia64_set_itv(1 << 16);
ia64_set_lrr0(1 << 16);
ia64_set_lrr1(1 << 16);
/* terminate possible nested in-service interrupts */
for (ii = 0; ii < 16; ii++)
ia64_eoi();
/* unmask TPR and clear any pending interrupts */
ia64_setreg(_IA64_REG_CR_TPR, 0);
ia64_srlz_d();
vector = ia64_get_ivr();
while (vector != IA64_SPURIOUS_INT_VECTOR) {
ia64_eoi();
vector = ia64_get_ivr();
}
platform_kernel_launch_event();
rnk = (relocate_new_kernel_t)&code_addr;
(*rnk)(image->head, image->start, ia64_boot_param,
GRANULEROUNDDOWN((unsigned long) pal_addr));
BUG();
}
void machine_kexec(struct kimage *image)
{
unw_init_running(ia64_machine_kexec, image);
for(;;);
}

5
arch/ia64/kernel/mca.c
View File

@ -82,6 +82,7 @@
#include <asm/system.h>
#include <asm/sal.h>
#include <asm/mca.h>
#include <asm/kexec.h>
#include <asm/irq.h>
#include <asm/hw_irq.h>
@ -1238,6 +1239,10 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
} else {
/* Dump buffered message to console */
ia64_mlogbuf_finish(1);
#ifdef CONFIG_CRASH_DUMP
atomic_set(&kdump_in_progress, 1);
monarch_cpu = -1;
#endif
}
if (notify_die(DIE_MCA_MONARCH_LEAVE, "MCA", regs, (long)&nd, 0, recover)
== NOTIFY_STOP)

22
arch/ia64/kernel/palinfo.c
View File

@ -16,6 +16,7 @@
* 02/05/2001 S.Eranian fixed module support
* 10/23/2001 S.Eranian updated pal_perf_mon_info bug fixes
* 03/24/2004 Ashok Raj updated to work with CPU Hotplug
* 10/26/2006 Russ Anderson updated processor features to rev 2.2 spec
*/
#include <linux/types.h>
#include <linux/errno.h>
@ -314,13 +315,20 @@ vm_info(char *page)
"Protection Key Registers(PKR) : %d\n"
"Implemented bits in PKR.key : %d\n"
"Hash Tag ID : 0x%x\n"
"Size of RR.rid : %d\n",
"Size of RR.rid : %d\n"
"Max Purges : ",
vm_info_1.pal_vm_info_1_s.phys_add_size,
vm_info_2.pal_vm_info_2_s.impl_va_msb+1,
vm_info_1.pal_vm_info_1_s.max_pkr+1,
vm_info_1.pal_vm_info_1_s.key_size,
vm_info_1.pal_vm_info_1_s.hash_tag_id,
vm_info_2.pal_vm_info_2_s.rid_size);
if (vm_info_2.pal_vm_info_2_s.max_purges == PAL_MAX_PURGES)
p += sprintf(p, "unlimited\n");
else
p += sprintf(p, "%d\n",
vm_info_2.pal_vm_info_2_s.max_purges ?
vm_info_2.pal_vm_info_2_s.max_purges : 1);
}
if (ia64_pal_mem_attrib(&attrib) == 0) {
@ -467,7 +475,11 @@ static const char *proc_features[]={
NULL,NULL,NULL,NULL,NULL,NULL,NULL, NULL,NULL,
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
NULL,NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL,
NULL,NULL,NULL,NULL,NULL,
"Unimplemented instruction address fault",
"INIT, PMI, and LINT pins",
"Simple unimplemented instr addresses",
"Variable P-state performance",
"Virtual machine features implemented",
"XIP,XPSR,XFS implemented",
"XR1-XR3 implemented",
"Disable dynamic predicate prediction",
@ -475,7 +487,11 @@ static const char *proc_features[]={
"Disable dynamic data cache prefetch",
"Disable dynamic inst cache prefetch",
"Disable dynamic branch prediction",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
"Disable P-states",
"Enable MCA on Data Poisoning",
"Enable vmsw instruction",
"Enable extern environmental notification",
"Disable BINIT on processor time-out",
"Disable dynamic power management (DPM)",
"Disable coherency",

3
arch/ia64/kernel/perfmon.c
View File

@ -853,9 +853,8 @@ pfm_context_alloc(void)
* allocate context descriptor
* must be able to free with interrupts disabled
*/
ctx = kmalloc(sizeof(pfm_context_t), GFP_KERNEL);
ctx = kzalloc(sizeof(pfm_context_t), GFP_KERNEL);
if (ctx) {
memset(ctx, 0, sizeof(pfm_context_t));
DPRINT(("alloc ctx @%p\n", ctx));
}
return ctx;

12
arch/ia64/kernel/perfmon_montecito.h
View File

@ -45,16 +45,16 @@ static pfm_reg_desc_t pfm_mont_pmc_desc[PMU_MAX_PMCS]={
/* pmc29 */ { PFM_REG_NOTIMPL, },
/* pmc30 */ { PFM_REG_NOTIMPL, },
/* pmc31 */ { PFM_REG_NOTIMPL, },
/* pmc32 */ { PFM_REG_CONFIG, 0, 0x30f01ffffffffff, 0x30f01ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc33 */ { PFM_REG_CONFIG, 0, 0x0, 0x1ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc34 */ { PFM_REG_CONFIG, 0, 0xf01ffffffffff, 0xf01ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc35 */ { PFM_REG_CONFIG, 0, 0x0, 0x1ffffffffff, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc32 */ { PFM_REG_CONFIG, 0, 0x30f01ffffffffffUL, 0x30f01ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc33 */ { PFM_REG_CONFIG, 0, 0x0, 0x1ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc34 */ { PFM_REG_CONFIG, 0, 0xf01ffffffffffUL, 0xf01ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc35 */ { PFM_REG_CONFIG, 0, 0x0, 0x1ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc36 */ { PFM_REG_CONFIG, 0, 0xfffffff0, 0xf, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc37 */ { PFM_REG_MONITOR, 4, 0x0, 0x3fff, NULL, pfm_mont_pmc_check, {RDEP_MONT_IEAR, 0, 0, 0}, {0, 0, 0, 0}},
/* pmc38 */ { PFM_REG_CONFIG, 0, 0xdb6, 0x2492, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc39 */ { PFM_REG_MONITOR, 6, 0x0, 0xffcf, NULL, pfm_mont_pmc_check, {RDEP_MONT_ETB,0, 0, 0}, {0,0, 0, 0}},
/* pmc40 */ { PFM_REG_MONITOR, 6, 0x2000000, 0xf01cf, NULL, pfm_mont_pmc_check, {RDEP_MONT_DEAR,0, 0, 0}, {0,0, 0, 0}},
/* pmc41 */ { PFM_REG_CONFIG, 0, 0x00002078fefefefe, 0x1e00018181818, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc41 */ { PFM_REG_CONFIG, 0, 0x00002078fefefefeUL, 0x1e00018181818UL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
/* pmc42 */ { PFM_REG_MONITOR, 6, 0x0, 0x7ff4f, NULL, pfm_mont_pmc_check, {RDEP_MONT_ETB,0, 0, 0}, {0,0, 0, 0}},
{ PFM_REG_END , 0, 0x0, -1, NULL, NULL, {0,}, {0,}}, /* end marker */
};
@ -185,7 +185,7 @@ pfm_mont_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cn
DPRINT(("cnum=%u val=0x%lx, using_dbreg=%d loaded=%d\n", cnum, tmpval, ctx->ctx_fl_using_dbreg, is_loaded));
if (cnum == 41 && is_loaded
&& (tmpval & 0x1e00000000000) && (tmpval & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) {
&& (tmpval & 0x1e00000000000UL) && (tmpval & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) {
DPRINT(("pmc[%d]=0x%lx has active pmc41 settings, clearing dbr\n", cnum, tmpval));

334
arch/ia64/kernel/relocate_kernel.S Normal file
View File

@ -0,0 +1,334 @@
/*
* arch/ia64/kernel/relocate_kernel.S
*
* Relocate kexec'able kernel and start it
*
* Copyright (C) 2005 Hewlett-Packard Development Company, L.P.
* Copyright (C) 2005 Khalid Aziz <khalid.aziz@hp.com>
* Copyright (C) 2005 Intel Corp, Zou Nan hai <nanhai.zou@intel.com>
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#include <asm/asmmacro.h>
#include <asm/kregs.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/mca_asm.h>
/* Must be relocatable PIC code callable as a C function
*/
GLOBAL_ENTRY(relocate_new_kernel)
.prologue
alloc r31=ar.pfs,4,0,0,0
.body
.reloc_entry:
{
rsm psr.i| psr.ic
mov r2=ip
}
;;
{
flushrs // must be first insn in group
srlz.i
}
;;
dep r2=0,r2,61,3 //to physical address
;;
//first switch to physical mode
add r3=1f-.reloc_entry, r2
movl r16 = IA64_PSR_AC|IA64_PSR_BN|IA64_PSR_IC
mov ar.rsc=0 // put RSE in enforced lazy mode
;;
add sp=(memory_stack_end - 16 - .reloc_entry),r2
add r8=(register_stack - .reloc_entry),r2
;;
mov r18=ar.rnat
mov ar.bspstore=r8
;;
mov cr.ipsr=r16
mov cr.iip=r3
mov cr.ifs=r0
srlz.i
;;
mov ar.rnat=r18
rfi
;;
1:
//physical mode code begin
mov b6=in1
dep r28=0,in2,61,3 //to physical address
// purge all TC entries
#define O(member) IA64_CPUINFO_##member##_OFFSET
GET_THIS_PADDR(r2, cpu_info) // load phys addr of cpu_info into r2
;;
addl r17=O(PTCE_STRIDE),r2
addl r2=O(PTCE_BASE),r2
;;
ld8 r18=[r2],(O(PTCE_COUNT)-O(PTCE_BASE));; // r18=ptce_base
ld4 r19=[r2],4 // r19=ptce_count[0]
ld4 r21=[r17],4 // r21=ptce_stride[0]
;;
ld4 r20=[r2] // r20=ptce_count[1]
ld4 r22=[r17] // r22=ptce_stride[1]
mov r24=r0
;;
adds r20=-1,r20
;;
#undef O
2:
cmp.ltu p6,p7=r24,r19
(p7) br.cond.dpnt.few 4f
mov ar.lc=r20
3:
ptc.e r18
;;
add r18=r22,r18
br.cloop.sptk.few 3b
;;
add r18=r21,r18
add r24=1,r24
;;
br.sptk.few 2b
4:
srlz.i
;;
//purge TR entry for kernel text and data
movl r16=KERNEL_START
mov r18=KERNEL_TR_PAGE_SHIFT<<2
;;
ptr.i r16, r18
ptr.d r16, r18
;;
srlz.i
;;
// purge TR entry for percpu data
movl r16=PERCPU_ADDR
mov r18=PERCPU_PAGE_SHIFT<<2
;;
ptr.d r16,r18
;;
srlz.d
;;
// purge TR entry for pal code
mov r16=in3
mov r18=IA64_GRANULE_SHIFT<<2
;;
ptr.i r16,r18
;;
srlz.i
;;
// purge TR entry for stack
mov r16=IA64_KR(CURRENT_STACK)
;;
shl r16=r16,IA64_GRANULE_SHIFT
movl r19=PAGE_OFFSET
;;
add r16=r19,r16
mov r18=IA64_GRANULE_SHIFT<<2
;;
ptr.d r16,r18
;;
srlz.i
;;
//copy segments
movl r16=PAGE_MASK
mov r30=in0 // in0 is page_list
br.sptk.few .dest_page
;;
.loop:
ld8 r30=[in0], 8;;
.dest_page:
tbit.z p0, p6=r30, 0;; // 0x1 dest page
(p6) and r17=r30, r16
(p6) br.cond.sptk.few .loop;;
tbit.z p0, p6=r30, 1;; // 0x2 indirect page
(p6) and in0=r30, r16
(p6) br.cond.sptk.few .loop;;
tbit.z p0, p6=r30, 2;; // 0x4 end flag
(p6) br.cond.sptk.few .end_loop;;
tbit.z p6, p0=r30, 3;; // 0x8 source page
(p6) br.cond.sptk.few .loop
and r18=r30, r16
// simple copy page, may optimize later
movl r14=PAGE_SIZE/8 - 1;;
mov ar.lc=r14;;
1:
ld8 r14=[r18], 8;;
st8 [r17]=r14;;
fc.i r17
add r17=8, r17
br.ctop.sptk.few 1b
br.sptk.few .loop
;;
.end_loop:
sync.i // for fc.i
;;
srlz.i
;;
srlz.d
;;
br.call.sptk.many b0=b6;;
.align 32
memory_stack:
.fill 8192, 1, 0
memory_stack_end:
register_stack:
.fill 8192, 1, 0
register_stack_end:
relocate_new_kernel_end:
END(relocate_new_kernel)
.global relocate_new_kernel_size
relocate_new_kernel_size:
data8 relocate_new_kernel_end - relocate_new_kernel
GLOBAL_ENTRY(ia64_dump_cpu_regs)
.prologue
alloc loc0=ar.pfs,1,2,0,0
.body
mov ar.rsc=0 // put RSE in enforced lazy mode
add loc1=4*8, in0 // save r4 and r5 first
;;
{
flushrs // flush dirty regs to backing store
srlz.i
}
st8 [loc1]=r4, 8
;;
st8 [loc1]=r5, 8
;;
add loc1=32*8, in0
mov r4=ar.rnat
;;
st8 [in0]=r0, 8 // r0
st8 [loc1]=r4, 8 // rnat
mov r5=pr
;;
st8 [in0]=r1, 8 // r1
st8 [loc1]=r5, 8 // pr
mov r4=b0
;;
st8 [in0]=r2, 8 // r2
st8 [loc1]=r4, 8 // b0
mov r5=b1;
;;
st8 [in0]=r3, 24 // r3
st8 [loc1]=r5, 8 // b1
mov r4=b2
;;
st8 [in0]=r6, 8 // r6
st8 [loc1]=r4, 8 // b2
mov r5=b3
;;
st8 [in0]=r7, 8 // r7
st8 [loc1]=r5, 8 // b3
mov r4=b4
;;
st8 [in0]=r8, 8 // r8
st8 [loc1]=r4, 8 // b4
mov r5=b5
;;
st8 [in0]=r9, 8 // r9
st8 [loc1]=r5, 8 // b5
mov r4=b6
;;
st8 [in0]=r10, 8 // r10
st8 [loc1]=r5, 8 // b6
mov r5=b7
;;
st8 [in0]=r11, 8 // r11
st8 [loc1]=r5, 8 // b7
mov r4=b0
;;
st8 [in0]=r12, 8 // r12
st8 [loc1]=r4, 8 // ip
mov r5=loc0
;;
st8 [in0]=r13, 8 // r13
extr.u r5=r5, 0, 38 // ar.pfs.pfm
mov r4=r0 // user mask
;;
st8 [in0]=r14, 8 // r14
st8 [loc1]=r5, 8 // cfm
;;
st8 [in0]=r15, 8 // r15
st8 [loc1]=r4, 8 // user mask
mov r5=ar.rsc
;;
st8 [in0]=r16, 8 // r16
st8 [loc1]=r5, 8 // ar.rsc
mov r4=ar.bsp
;;
st8 [in0]=r17, 8 // r17
st8 [loc1]=r4, 8 // ar.bsp
mov r5=ar.bspstore
;;
st8 [in0]=r18, 8 // r18
st8 [loc1]=r5, 8 // ar.bspstore
mov r4=ar.rnat
;;
st8 [in0]=r19, 8 // r19
st8 [loc1]=r4, 8 // ar.rnat
mov r5=ar.ccv
;;
st8 [in0]=r20, 8 // r20
st8 [loc1]=r5, 8 // ar.ccv
mov r4=ar.unat
;;
st8 [in0]=r21, 8 // r21
st8 [loc1]=r4, 8 // ar.unat
mov r5 = ar.fpsr
;;
st8 [in0]=r22, 8 // r22
st8 [loc1]=r5, 8 // ar.fpsr
mov r4 = ar.unat
;;
st8 [in0]=r23, 8 // r23
st8 [loc1]=r4, 8 // unat
mov r5 = ar.fpsr
;;
st8 [in0]=r24, 8 // r24
st8 [loc1]=r5, 8 // fpsr
mov r4 = ar.pfs
;;
st8 [in0]=r25, 8 // r25
st8 [loc1]=r4, 8 // ar.pfs
mov r5 = ar.lc
;;
st8 [in0]=r26, 8 // r26
st8 [loc1]=r5, 8 // ar.lc
mov r4 = ar.ec
;;
st8 [in0]=r27, 8 // r27
st8 [loc1]=r4, 8 // ar.ec
mov r5 = ar.csd
;;
st8 [in0]=r28, 8 // r28
st8 [loc1]=r5, 8 // ar.csd
mov r4 = ar.ssd
;;
st8 [in0]=r29, 8 // r29
st8 [loc1]=r4, 8 // ar.ssd
;;
st8 [in0]=r30, 8 // r30
;;
st8 [in0]=r31, 8 // r31
mov ar.pfs=loc0
;;
br.ret.sptk.many rp
END(ia64_dump_cpu_regs)

38
arch/ia64/kernel/setup.c
View File

@ -43,6 +43,8 @@
#include <linux/initrd.h>
#include <linux/pm.h>
#include <linux/cpufreq.h>
#include <linux/kexec.h>
#include <linux/crash_dump.h>
#include <asm/ia32.h>
#include <asm/machvec.h>
@ -252,6 +254,41 @@ reserve_memory (void)
efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
n++;
#ifdef CONFIG_KEXEC
/* crashkernel=size@offset specifies the size to reserve for a crash
* kernel.(offset is ingored for keep compatibility with other archs)
* By reserving this memory we guarantee that linux never set's it
* up as a DMA target.Useful for holding code to do something
* appropriate after a kernel panic.
*/
{
char *from = strstr(saved_command_line, "crashkernel=");
unsigned long base, size;
if (from) {
size = memparse(from + 12, &from);
if (size) {
sort_regions(rsvd_region, n);
base = kdump_find_rsvd_region(size,
rsvd_region, n);
if (base != ~0UL) {
rsvd_region[n].start =
(unsigned long)__va(base);
rsvd_region[n].end =
(unsigned long)__va(base + size);
n++;
crashk_res.start = base;
crashk_res.end = base + size - 1;
}
}
}
efi_memmap_res.start = ia64_boot_param->efi_memmap;
efi_memmap_res.end = efi_memmap_res.start +
ia64_boot_param->efi_memmap_size;
boot_param_res.start = __pa(ia64_boot_param);
boot_param_res.end = boot_param_res.start +
sizeof(*ia64_boot_param);
}
#endif
/* end of memory marker */
rsvd_region[n].start = ~0UL;
rsvd_region[n].end = ~0UL;
@ -263,6 +300,7 @@ reserve_memory (void)
sort_regions(rsvd_region, num_rsvd_regions);
}
/**
* find_initrd - get initrd parameters from the boot parameter structure
*

28
arch/ia64/kernel/smp.c
View File

@ -30,6 +30,7 @@
#include <linux/delay.h>
#include <linux/efi.h>
#include <linux/bitops.h>
#include <linux/kexec.h>
#include <asm/atomic.h>
#include <asm/current.h>
@ -66,6 +67,7 @@ static volatile struct call_data_struct *call_data;
#define IPI_CALL_FUNC 0
#define IPI_CPU_STOP 1
#define IPI_KDUMP_CPU_STOP 3
/* This needs to be cacheline aligned because it is written to by *other* CPUs. */
static DEFINE_PER_CPU(u64, ipi_operation) ____cacheline_aligned;
@ -155,7 +157,11 @@ handle_IPI (int irq, void *dev_id)
case IPI_CPU_STOP:
stop_this_cpu();
break;
#ifdef CONFIG_CRASH_DUMP
case IPI_KDUMP_CPU_STOP:
unw_init_running(kdump_cpu_freeze, NULL);
break;
#endif
default:
printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", this_cpu, which);
break;
@ -213,6 +219,26 @@ send_IPI_self (int op)
send_IPI_single(smp_processor_id(), op);
}
#ifdef CONFIG_CRASH_DUMP
void
kdump_smp_send_stop()
{
send_IPI_allbutself(IPI_KDUMP_CPU_STOP);
}
void
kdump_smp_send_init()
{
unsigned int cpu, self_cpu;
self_cpu = smp_processor_id();
for_each_online_cpu(cpu) {
if (cpu != self_cpu) {
if(kdump_status[cpu] == 0)
platform_send_ipi(cpu, 0, IA64_IPI_DM_INIT, 0);
}
}
}
#endif
/*
* Called with preeemption disabled.
*/