Hi,
If /proc/sys/kernel/kdump_on_init is 1, oops occurs during reboot.
(It means normal reboot of 1st kernel, not 2nd kernel reboot)
reboot[11616]: NaT consumption 2216203124768 [1]
Unable to handle kernel paging request at virtual address 0000020400000020
reboot[11616]: Oops 11012296146944 [2]
Unable to handle kernel paging request at virtual address 00000a0400000000
Recursive die() failure, output suppressed
INIT: no more processes left in this runlevel
The cause is that kdump_init_notifier is called from notify_die in the
machine_restart.
void
machine_restart (char *restart_cmd)
{
(void) notify_die(DIE_MACHINE_RESTART, restart_cmd, NULL, 0, 0, 0);
(*efi.reset_system)(EFI_RESET_WARM, 0, 0, NULL);
}
This problem is fixed by adding the following code to the top of
kdump_init_notifier.
if ((val !=DIE_INIT_MONARCH_ENTER) && (val != DIE_INIT_SLAVE_ENTER))
return NOTIFY_DONE;
Regards,
Takao Indoh
On 15 Sep 2006 10:55:49 +0800, Zou Nan hai wrote:
>
>Hi,
> Here is a new version of IA64 Kexec/Kdump patch.
> Update since last patch.
>
> 1. Ignore offset in crashkernel=size@offset kernel parameter. kernel
>will find crashkernel region according to size at boot time. However
>crashkernel parameter format is not changed to keep compatibility with
>other archs
> 2. send EOI to iosapic
> 3. Patch from HP to clean interrupt at shutdown time.
> 4. Enhanced OS_INIT handle patch base on Takao Indoh and comments
>from Keith Owens.
>
>signed-off-by: Zou Nan hai <nanhai.zou@xxxxxxxxx>
>
>diff -Nraup linux-2.6.18-rc6/arch/ia64/Kconfig linux-2.6.18-rc6-kdump/arch/
>ia64/Kconfig
>--- linux-2.6.18-rc6/arch/ia64/Kconfig 2006-09-14 10:33:08.000000000 +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/Kconfig 2006-09-14 11:12:14.000000000
>+0800
>@@ -427,6 +427,29 @@ config SGI_SN
>
> source "drivers/sn/Kconfig"
>
>+config KEXEC
>+ bool "kexec system call (EXPERIMENTAL)"
>+ depends on EXPERIMENTAL
>+ help
>+ kexec is a system call that implements the ability to shutdown your
>+ current kernel, and to start another kernel. It is like a reboot
>+ but it is indepedent of the system firmware. And like a reboot
>+ you can start any kernel with it, not just Linux.
>+
>+ The name comes from the similiarity to the exec system call.
>+
>+ It is an ongoing process to be certain the hardware in a machine
>+ is properly shutdown, so do not be surprised if this code does not
>+ initially work for you. It may help to enable device hotplugging
>+ support. As of this writing the exact hardware interface is
>+ strongly in flux, so no good recommendation can be made.
>+
>+config CRASH_DUMP
>+ bool "kernel crash dumps (EXPERIMENTAL)"
>+ depends on EXPERIMENTAL && IA64_MCA_RECOVERY
>+ help
>+ Generate crash dump after being started by kexec.
>+
> source "drivers/firmware/Kconfig"
>
> source "fs/Kconfig.binfmt"
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/crash.c linux-2.6.18-rc6-
>kdump/arch/ia64/kernel/crash.c
>--- linux-2.6.18-rc6/arch/ia64/kernel/crash.c 1970-01-01 08:00:00.000000000
> +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/crash.c 2006-09-15 10:54:55.
>000000000 +0800
>@@ -0,0 +1,224 @@
>+/*
>+ * arch/ia64/kernel/crash.c
>+ *
>+ * Architecture specific (ia64) functions for kexec based crash dumps.
>+ *
>+ * Created by: Khalid Aziz <khalid.aziz@xxxxxx>
>+ * Copyright (C) 2005 Hewlett-Packard Development Company, L.P.
>+ * Copyright (C) 2005 Intel Corp Zou Nan hai <nanhai.zou@xxxxxxxxx>
>+ *
>+ */
>+#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;
>+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)
>+{
>+ local_irq_disable();
>+ crash_save_this_cpu();
>+ current->thread.ksp = (__u64)info->sw - 16;
>+ atomic_inc(&kdump_cpu_freezed);
>+ kdump_status[smp_processor_id()] = 1;
>+ mb();
>+ for (;;)
>+ cpu_relax();
>+}
>+
>+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;
>+ nd = (struct ia64_mca_notify_die *)args->err;
>+ /* Reason code 1 means machine check rendezous*/
>+ if (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;
>+ }
>+ return NOTIFY_DONE;
>+}
>+
>+#ifdef CONFIG_SYSCTL
>+static ctl_table kdump_on_init_table[] = {
>+ {
>+ .ctl_name = KERN_KDUMP_ON_INIT,
>+ .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
>+ if ((ret = register_sysctl_table(sys_table, 0)) != 0)
>+ return ret;
>+#endif
>+ return 0;
>+}
>+
>+__initcall(machine_crash_setup);
>+
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/efi.c linux-2.6.18-rc6-kdump/
>arch/ia64/kernel/efi.c
>--- linux-2.6.18-rc6/arch/ia64/kernel/efi.c 2006-09-14 10:33:08.000000000 +
>0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/efi.c 2006-09-14 11:12:32.
>000000000 +0800
>@@ -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)
>
>@@ -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);
>
>@@ -894,7 +899,8 @@ find_memmap_space (void)
> 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;
>@@ -1004,7 +1010,8 @@ efi_memmap_init(unsigned long *s, unsign
> } 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 re
> */
> 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
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/entry.S linux-2.6.18-rc6-
>kdump/arch/ia64/kernel/entry.S
>--- linux-2.6.18-rc6/arch/ia64/kernel/entry.S 2006-09-14 10:33:08.000000000
> +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/entry.S 2006-09-14 11:04:47.
>000000000 +0800
>@@ -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
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/iosapic.c linux-2.6.18-rc6-
>kdump/arch/ia64/kernel/iosapic.c
>--- linux-2.6.18-rc6/arch/ia64/kernel/iosapic.c 2006-09-14 10:33:08.
>000000000 +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/iosapic.c 2006-09-14 11:14:20.
>000000000 +0800
>@@ -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;
>+ for (info = iosapic_intr_info; info <
>+ iosapic_intr_info + IA64_NUM_VECTORS; ++info) {
>+ list_for_each_entry(rte, &info->rtes,
>+ rte_list) {
>+ iosapic_write(rte->addr,
>+ IOSAPIC_RTE_LOW(rte->rte_index),
>+ IOSAPIC_MASK);
>+ iosapic_eoi(rte->addr, vec);
>+ }
>+ }
>+}
>+#endif
>+
> static void
> mask_irq (unsigned int irq)
> {
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/machine_kexec.c linux-2.6.18-
>rc6-kdump/arch/ia64/kernel/machine_kexec.c
>--- linux-2.6.18-rc6/arch/ia64/kernel/machine_kexec.c 1970-01-01 08:00:00.
>000000000 +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/machine_kexec.c 2006-09-14 14:
>50:45.000000000 +0800
>@@ -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@xxxxxx>
>+ * Copyright (C) 2006 Intel Corp, Zou Nan hai <nanhai.zou@xxxxxxxxx>
>+ *
>+ * 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)
>+{
>+#ifdef CONFIG_HOTPLUG_CPU
>+ {
>+ int cpu;
>+
>+ for_each_online_cpu(cpu) {
>+ if (cpu != smp_processor_id())
>+ cpu_down(cpu);
>+ }
>+ }
>+#elif defined(CONFIG_SMP)
>+ smp_call_function(kexec_stop_this_cpu, (void *)ia64_kimage->start, 0, 0);
>+#endif
>+ 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;
>+
>+ 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);
>+
>+ /* 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();
>+ }
>+ 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(;;);
>+}
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/Makefile linux-2.6.18-rc6-
>kdump/arch/ia64/kernel/Makefile
>--- linux-2.6.18-rc6/arch/ia64/kernel/Makefile 2006-09-14 10:33:08.
>000000000 +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/Makefile 2006-09-14 11:04:47.
>000000000 +0800
>@@ -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
> mca_recovery-y += mca_drv.o mca_drv_asm.o
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/relocate_kernel.S linux-2.6.
>18-rc6-kdump/arch/ia64/kernel/relocate_kernel.S
>--- linux-2.6.18-rc6/arch/ia64/kernel/relocate_kernel.S 1970-01-01 08:00:00
>.000000000 +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/relocate_kernel.S 2006-09-14 11
>:04:47.000000000 +0800
>@@ -0,0 +1,490 @@
>+/*
>+ * 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@xxxxxx>
>+ * Copyright (C) 2005 Intel Corp, Zou Nan hai <nanhai.zou@xxxxxxxxx>
>+ *
>+ * This source code is licensed under the GNU General Public License,
>+ * Version 2. See the file COPYING for more details.
>+ */
>+#include <linux/config.h>
>+#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, 8;;
>+ fc.i 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_ENTRY(kexec_fake_sal_rendez)
>+ .prologue
>+ alloc r31=ar.pfs,3,0,0,0
>+ .body
>+.rendez_entry:
>+ rsm psr.i | psr.ic
>+ mov r25=ip
>+ ;;
>+ {
>+ flushrs
>+ srlz.i
>+ }
>+ ;;
>+ /* See where I am running, and compute gp */
>+ {
>+ mov ar.rsc = 0 /* Put RSE in enforce lacy, LE mode */
>+ mov gp = ip /* gp == relocate_new_kernel */
>+ }
>+
>+ movl r8=0x00000100000000
>+ ;;
>+ mov cr.iva=r8
>+ /* Transition from virtual to physical mode */
>+ srlz.i
>+ ;;
>+ add r17=5f-.rendez_entry, r25
>+ movl r16=(IA64_PSR_AC | IA64_PSR_BN | IA64_PSR_IC | IA64_PSR_MFL)
>+ ;;
>+ tpa r17=r17
>+ mov cr.ipsr=r16
>+ ;;
>+ mov cr.iip=r17
>+ mov cr.ifs=r0
>+ ;;
>+ rfi
>+ ;;
>+5:
>+ mov b6=in0 /* _start addr */
>+ mov r8=in1 /* ap_wakeup_vector */
>+ mov r26=in2 /* PAL addr */
>+ ;;
>+ /* Purge kernel TRs */
>+ movl r16=KERNEL_START
>+ mov r18=KERNEL_TR_PAGE_SHIFT<<2
>+ ;;
>+ ptr.i r16,r18
>+ ptr.d r16,r18
>+ ;;
>+ srlz.i
>+ ;;
>+ srlz.d
>+ ;;
>+ /* Purge percpu TR */
>+ movl r16=PERCPU_ADDR
>+ mov r18=PERCPU_PAGE_SHIFT<<2
>+ ;;
>+ ptr.d r16,r18
>+ ;;
>+ srlz.d
>+ ;;
>+ /* Purge PAL TR */
>+ mov r18=IA64_GRANULE_SHIFT<<2
>+ ;;
>+ ptr.i r26,r18
>+ ;;
>+ srlz.i
>+ ;;
>+ /* Purge stack TR */
>+ 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
>+ ;;
>+
>+ /* Ensure we can read and clear external interrupts */
>+ mov cr.tpr=r0
>+ srlz.d
>+
>+ shr.u r9=r8,6 /* which irr */
>+ ;;
>+ and r8=63,r8 /* bit offset into irr */
>+ ;;
>+ mov r10=1;;
>+ ;;
>+ shl r10=r10,r8 /* bit mask off irr we want */
>+ cmp.eq p6,p0=0,r9
>+ ;;
>+(p6) br.cond.sptk.few check_irr0
>+ cmp.eq p7,p0=1,r9
>+ ;;
>+(p7) br.cond.sptk.few check_irr1
>+ cmp.eq p8,p0=2,r9
>+ ;;
>+(p8) br.cond.sptk.few check_irr2
>+ cmp.eq p9,p0=3,r9
>+ ;;
>+(p9) br.cond.sptk.few check_irr3
>+
>+check_irr0:
>+ mov r8=cr.irr0
>+ ;;
>+ and r8=r8,r10
>+ ;;
>+ cmp.eq p6,p0=0,r8
>+(p6) br.cond.sptk.few check_irr0
>+ br.few call_start
>+
>+check_irr1:
>+ mov r8=cr.irr1
>+ ;;
>+ and r8=r8,r10
>+ ;;
>+ cmp.eq p6,p0=0,r8
>+(p6) br.cond.sptk.few check_irr1
>+ br.few call_start
>+
>+check_irr2:
>+ mov r8=cr.irr2
>+ ;;
>+ and r8=r8,r10
>+ ;;
>+ cmp.eq p6,p0=0,r8
>+(p6) br.cond.sptk.few check_irr2
>+ br.few call_start
>+
>+check_irr3:
>+ mov r8=cr.irr3
>+ ;;
>+ and r8=r8,r10
>+ ;;
>+ cmp.eq p6,p0=0,r8
>+(p6) br.cond.sptk.few check_irr3
>+ br.few call_start
>+
>+call_start:
>+ mov cr.eoi=r0
>+ ;;
>+ srlz.d
>+ ;;
>+ mov r8=cr.ivr
>+ ;;
>+ srlz.d
>+ ;;
>+ cmp.eq p0,p6=15,r8
>+(p6) br.cond.sptk.few call_start
>+ br.sptk.few b6
>+kexec_fake_sal_rendez_end:
>+END(kexec_fake_sal_rendez)
>+
>+ .global relocate_new_kernel_size
>+relocate_new_kernel_size:
>+ data8 kexec_fake_sal_rendez_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)
>+
>+
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/setup.c linux-2.6.18-rc6-
>kdump/arch/ia64/kernel/setup.c
>--- linux-2.6.18-rc6/arch/ia64/kernel/setup.c 2006-09-14 10:33:08.000000000
> +0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/setup.c 2006-09-15 11:56:34.
>000000000 +0800
>@@ -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>
>@@ -253,6 +255,42 @@ 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;
>@@ -264,6 +302,7 @@ reserve_memory (void)
> sort_regions(rsvd_region, num_rsvd_regions);
> }
>
>+
> /**
> * find_initrd - get initrd parameters from the boot parameter structure
> *
>diff -Nraup linux-2.6.18-rc6/arch/ia64/kernel/smp.c linux-2.6.18-rc6-kdump/
>arch/ia64/kernel/smp.c
>--- linux-2.6.18-rc6/arch/ia64/kernel/smp.c 2006-06-18 09:49:35.000000000 +
>0800
>+++ linux-2.6.18-rc6-kdump/arch/ia64/kernel/smp.c 2006-09-14 15:35:33.
>000000000 +0800
>@@ -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
>
> #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;
>@@ -84,6 +86,34 @@ unlock_ipi_calllock(void)
> spin_unlock_irq(&call_lock);
> }
>
>+#ifdef CONFIG_KEXEC
>+/*
>+ * Stop the CPU and put it in fake SAL rendezvous. This allows CPU to wake
>+ * up with IPI from boot processor
>+ */
>+void
>+kexec_stop_this_cpu (void *func)
>+{
>+ unsigned long pta, impl_va_bits, pal_base;
>+
>+ /*
>+ * Remove this CPU by putting it into fake SAL rendezvous
>+ */
>+ cpu_clear(smp_processor_id(), cpu_online_map);
>+ max_xtp();
>+ ia64_eoi();
>+
>+ /* Disable VHPT */
>+ impl_va_bits = ffz(~(local_cpu_data->unimpl_va_mask | (7UL << 61)));
>+ pta = POW2(61) - POW2(vmlpt_bits);
>+ ia64_set_pta(pta | (0 << 8) | (vmlpt_bits << 2) | 0);
>+
>+ local_irq_disable();
>+ pal_base = __get_cpu_var(ia64_mca_pal_base);
>+ kexec_fake_sal_rendez(func, ap_wakeup_vector, pal_base);
>+}
>+#endif
>+
> static void
> stop_this_cpu (void)
> {
>@@ -155,7 +185,11 @@ handle_IPI (int irq, void *dev_id, struc
> 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 +247,26 @@ 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.
> */
>diff -Nraup linux-2.6.18-rc6/include/asm-ia64/kexec.h linux-2.6.18-rc6-
>kdump/include/asm-ia64/kexec.h
>--- linux-2.6.18-rc6/include/asm-ia64/kexec.h 1970-01-01 08:00:00.000000000
> +0800
>+++ linux-2.6.18-rc6-kdump/include/asm-ia64/kexec.h 2006-09-15 09:56:52.
>000000000 +0800
>@@ -0,0 +1,53 @@
>+#ifndef _ASM_IA64_KEXEC_H
>+#define _ASM_IA64_KEXEC_H
>+
>+
>+/* Maximum physical address we can use pages from */
>+#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
>+/* Maximum address we can reach in physical address mode */
>+#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
>+/* Maximum address we can use for the control code buffer */
>+#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
>+
>+#define KEXEC_CONTROL_CODE_SIZE (8192 + 8192 + 4096)
>+
>+/* The native architecture */
>+#define KEXEC_ARCH KEXEC_ARCH_IA_64
>+
>+#define MAX_NOTE_BYTES 1024
>+
>+#define pte_bits 3
>+#define vmlpt_bits (impl_va_bits - PAGE_SHIFT + pte_bits)
>+#define POW2(n) (1ULL << (n))
>+
>+#define kexec_flush_icache_page(page) do { \
>+ unsigned long page_addr = (unsigned long)page_address(page
>); \
>+ flush_icache_range(page_addr, page_addr + PAGE_SIZE); \
>+ } while(0)
>+
>+extern struct kimage *ia64_kimage;
>+DECLARE_PER_CPU(u64, ia64_mca_pal_base);
>+const extern unsigned int relocate_new_kernel_size;
>+volatile extern long kexec_rendez;
>+extern void relocate_new_kernel(unsigned long, unsigned long,
>+ struct ia64_boot_param *, unsigned long);
>+extern void kexec_fake_sal_rendez(void *start, unsigned long wake_up,
>+ unsigned long pal_base);
>+static inline void
>+crash_setup_regs(struct pt_regs *newregs, struct pt_regs *oldregs)
>+{
>+}
>+extern struct resource efi_memmap_res;
>+extern struct resource boot_param_res;
>+extern void kdump_smp_send_stop(void);
>+extern void kdump_smp_send_init(void);
>+extern void kexec_disable_iosapic(void);
>+extern void crash_save_this_cpu(void);
>+struct rsvd_region;
>+extern unsigned long kdump_find_rsvd_region(unsigned long size,
>+ struct rsvd_region *rsvd_regions, int n);
>+extern void kdump_cpu_freeze(struct unw_frame_info *info, void *arg);
>+extern int kdump_status[];
>+extern atomic_t kdump_cpu_freezed;
>+
>+#endif /* _ASM_IA64_KEXEC_H */
>diff -Nraup linux-2.6.18-rc6/include/asm-ia64/meminit.h linux-2.6.18-rc6-
>kdump/include/asm-ia64/meminit.h
>--- linux-2.6.18-rc6/include/asm-ia64/meminit.h 2006-09-14 10:33:14.
>000000000 +0800
>+++ linux-2.6.18-rc6-kdump/include/asm-ia64/meminit.h 2006-09-14 11:04:47.
>000000000 +0800
>@@ -15,11 +15,12 @@
> * - initrd (optional)
> * - command line string
> * - kernel code & data
>+ * - crash dumping code reserved region
> * - Kernel memory map built from EFI memory map
> *
> * More could be added if necessary
> */
>-#define IA64_MAX_RSVD_REGIONS 6
>+#define IA64_MAX_RSVD_REGIONS 7
>
> struct rsvd_region {
> unsigned long start; /* virtual address of beginning of element */
>diff -Nraup linux-2.6.18-rc6/include/asm-ia64/smp.h linux-2.6.18-rc6-kdump/
>include/asm-ia64/smp.h
>--- linux-2.6.18-rc6/include/asm-ia64/smp.h 2006-09-14 10:33:14.000000000 +
>0800
>+++ linux-2.6.18-rc6-kdump/include/asm-ia64/smp.h 2006-09-14 11:04:47.
>000000000 +0800
>@@ -128,6 +128,9 @@ extern void smp_send_reschedule (int cpu
> extern void lock_ipi_calllock(void);
> extern void unlock_ipi_calllock(void);
> extern void identify_siblings (struct cpuinfo_ia64 *);
>+#ifdef CONFIG_KEXEC
>+extern void kexec_stop_this_cpu(void *);
>+#endif
>
> #else
>
>diff -Nraup linux-2.6.18-rc6/include/linux/kexec.h linux-2.6.18-rc6-kdump/
>include/linux/kexec.h
>--- linux-2.6.18-rc6/include/linux/kexec.h 2006-09-14 10:33:15.000000000 +
>0800
>+++ linux-2.6.18-rc6-kdump/include/linux/kexec.h 2006-09-14 11:04:47.
>000000000 +0800
>@@ -108,6 +108,10 @@ int kexec_should_crash(struct task_struc
> extern struct kimage *kexec_image;
> extern struct kimage *kexec_crash_image;
>
>+#ifndef kexec_flush_icache_page
>+#define kexec_flush_icache_page(page)
>+#endif
>+
> #define KEXEC_ON_CRASH 0x00000001
> #define KEXEC_ARCH_MASK 0xffff0000
>
>@@ -131,6 +135,7 @@ extern struct resource crashk_res;
> typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
> extern note_buf_t *crash_notes;
>
>+
> #else /* !CONFIG_KEXEC */
> struct pt_regs;
> struct task_struct;
>diff -Nraup linux-2.6.18-rc6/include/linux/sysctl.h linux-2.6.18-rc6-kdump/
>include/linux/sysctl.h
>--- linux-2.6.18-rc6/include/linux/sysctl.h 2006-09-14 10:33:15.000000000 +
>0800
>+++ linux-2.6.18-rc6-kdump/include/linux/sysctl.h 2006-09-14 17:53:08.
>000000000 +0800
>@@ -150,6 +150,7 @@ enum
> KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */
> KERN_COMPAT_LOG=73, /* int: print compat layer messages */
> KERN_MAX_LOCK_DEPTH=74,
>+ KERN_KDUMP_ON_INIT=75, /* int: ia64 kdump with INIT */
> };
>
>
>diff -Nraup linux-2.6.18-rc6/kernel/kexec.c linux-2.6.18-rc6-kdump/kernel/
>kexec.c
>--- linux-2.6.18-rc6/kernel/kexec.c 2006-09-14 10:33:15.000000000 +0800
>+++ linux-2.6.18-rc6-kdump/kernel/kexec.c 2006-09-14 14:50:23.000000000 +0800
>@@ -851,6 +851,7 @@ static int kimage_load_crash_segment(str
> memset(ptr + uchunk, 0, mchunk - uchunk);
> }
> result = copy_from_user(ptr, buf, uchunk);
>+ kexec_flush_icache_page(page);
> kunmap(page);
> if (result) {
> result = (result < 0) ? result : -EIO;
>
>
>_______________________________________________
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>fastboot@xxxxxxxxxxxxxx
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