--- 0001/linux-2.6-xen-sparse/arch/ia64/Kconfig +++ work/linux-2.6-xen-sparse/arch/ia64/Kconfig @@ -407,6 +407,29 @@ config IA64_PALINFO config SGI_SN def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) +config KEXEC + bool "kexec system call (EXPERIMENTAL)" + depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) + 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 && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) + help + Generate crash dump after being started by kexec. + source "drivers/firmware/Kconfig" source "fs/Kconfig.binfmt" --- 0001/linux-2.6-xen-sparse/arch/ia64/kernel/Makefile +++ work/linux-2.6-xen-sparse/arch/ia64/kernel/Makefile @@ -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 mca_recovery-y += mca_drv.o mca_drv_asm.o --- /dev/null +++ work/linux-2.6-xen-sparse/arch/ia64/kernel/crash.c @@ -0,0 +1,244 @@ +/* + * arch/ia64/kernel/crash.c + * + * Architecture specific (ia64) functions for kexec based crash dumps. + * + * Created by: Khalid Aziz + * Copyright (C) 2005 Hewlett-Packard Development Company, L.P. + * Copyright (C) 2005 Intel Corp Zou Nan hai + * + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +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<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 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; + + /* There really ought to be a check here to see if this + * is a machine check rendevous. The kexec code that + * was merged around 2.6.20-rc1 includes such a check. + * But the check relies on infastructure that is not + * available in 2.6.16. */ + + 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); + --- 0001/linux-2.6-xen-sparse/arch/ia64/kernel/entry.S +++ work/linux-2.6-xen-sparse/arch/ia64/kernel/entry.S @@ -1596,7 +1596,7 @@ 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 --- 0001/linux-2.6-xen-sparse/arch/ia64/kernel/iosapic.c +++ work/linux-2.6-xen-sparse/arch/ia64/kernel/iosapic.c @@ -333,6 +333,27 @@ nop (unsigned int vector) /* 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) { --- /dev/null +++ work/linux-2.6-xen-sparse/arch/ia64/kernel/machine_kexec.c @@ -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 + * Copyright (C) 2006 Intel Corp, Zou Nan hai + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +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(;;); +} --- /dev/null +++ work/linux-2.6-xen-sparse/arch/ia64/kernel/relocate_kernel.S @@ -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 + * Copyright (C) 2005 Intel Corp, Zou Nan hai + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ +#include +#include +#include +#include +#include + + /* 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) + + --- 0001/linux-2.6-xen-sparse/arch/ia64/kernel/setup.c +++ work/linux-2.6-xen-sparse/arch/ia64/kernel/setup.c @@ -44,6 +44,8 @@ #include #include #include +#include +#include #include #include @@ -281,6 +283,48 @@ 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; +#ifndef CONFIG_XEN + 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; + } + } + } +#else /* CONFIG_XEN */ + if (from) + printk("Ignoring crashkernel command line, " + "parameter will be supplied by xen\n"); + xen_machine_kexec_setup_resources(); +#endif /* CONFIG_XEN */ + 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; @@ -292,6 +336,7 @@ reserve_memory (void) sort_regions(rsvd_region, num_rsvd_regions); } + /** * find_initrd - get initrd parameters from the boot parameter structure * --- 0001/linux-2.6-xen-sparse/arch/ia64/xen/xcom_hcall.c +++ work/linux-2.6-xen-sparse/arch/ia64/xen/xcom_hcall.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -363,3 +364,11 @@ xencomm_hypercall_perfmon_op(unsigned lo xencomm_create_inline(arg), count); } + +int +xencomm_hypercall_kexec_op(int cmd, void *arg) +{ + void *desc = xencomm_create_inline(arg); + + return xencomm_arch_hypercall_kexec_op(cmd, desc); +} --- 0001/linux-2.6-xen-sparse/arch/ia64/xen/xcom_mini.c +++ work/linux-2.6-xen-sparse/arch/ia64/xen/xcom_mini.c @@ -29,6 +29,7 @@ #include #include #include +#include #ifdef CONFIG_VMX_GUEST #include #else @@ -415,3 +416,47 @@ xencomm_mini_hypercall_perfmon_op(unsign return xencomm_arch_hypercall_perfmon_op(cmd, desc, count); } EXPORT_SYMBOL_GPL(xencomm_mini_hypercall_perfmon_op); + +static int +xencommize_mini_kexec_op(struct xencomm_mini *xc_area, int *nbr_area, int cmd, + void *arg, struct xencomm_handle **desc) +{ + unsigned int argsize; + + switch (cmd) { + case KEXEC_CMD_kexec: + argsize = 0; + break; + case KEXEC_CMD_kexec_load: + argsize = sizeof(xen_kexec_image_t); + break; + case KEXEC_CMD_kexec_get_range: + argsize = sizeof(xen_kexec_range_t); + break; + default: + printk("%s: unknown kexec op %d\n", __func__, cmd); + BUG(); + } + + + printk("xencommize_mini_kexec: cmd=%d argsize=%u extra_args=%p\n", + cmd, argsize, arg); + + return xencomm_create_mini(xc_area, nbr_area, arg, argsize, desc); +} + +int +xencomm_mini_hypercall_kexec_op(int cmd, int type, void *arg) +{ + int rc; + struct xencomm_handle *desc; + int nbr_area = 2; + struct xencomm_mini xc_area[2]; + + rc = xencommize_mini_kexec_op(xc_area, &nbr_area, cmd, arg, &desc); + if (rc) + return rc; + + return xencomm_arch_hypercall_kexec_op(cmd, desc); +} +EXPORT_SYMBOL_GPL(xencomm_mini_hypercall_kexec_op); --- 0001/linux-2.6-xen-sparse/include/asm-ia64/hypercall.h +++ work/linux-2.6-xen-sparse/include/asm-ia64/hypercall.h @@ -430,6 +430,12 @@ xencomm_arch_hypercall_perfmon_op(unsign IA64_DOM0VP_perfmon, cmd, arg, count); } +static inline int +xencomm_arch_hypercall_kexec_op(int cmd, struct xencomm_handle *arg) +{ + return _hypercall2(int, kexec_op, cmd, arg); +} + // for balloon driver #define HYPERVISOR_update_va_mapping(va, new_val, flags) (0) @@ -445,6 +451,7 @@ xencomm_arch_hypercall_perfmon_op(unsign #define HYPERVISOR_memory_op xencomm_mini_hypercall_memory_op #define HYPERVISOR_xenoprof_op xencomm_mini_hypercall_xenoprof_op #define HYPERVISOR_perfmon_op xencomm_mini_hypercall_perfmon_op +#define HYPERVISOR_kexec_op xencomm_mini_hypercall_kexec_op #else #define HYPERVISOR_sched_op xencomm_hypercall_sched_op #define HYPERVISOR_event_channel_op xencomm_hypercall_event_channel_op @@ -456,6 +463,7 @@ xencomm_arch_hypercall_perfmon_op(unsign #define HYPERVISOR_memory_op xencomm_hypercall_memory_op #define HYPERVISOR_xenoprof_op xencomm_hypercall_xenoprof_op #define HYPERVISOR_perfmon_op xencomm_hypercall_perfmon_op +#define HYPERVISOR_kexec_op xencomm_hypercall_kexec_op #endif #define HYPERVISOR_suspend xencomm_hypercall_suspend --- /dev/null +++ work/linux-2.6-xen-sparse/include/asm-ia64/kexec.h @@ -0,0 +1,47 @@ +#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 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; +extern void relocate_new_kernel(unsigned long, unsigned long, + struct ia64_boot_param *, unsigned long); +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; +extern atomic_t kdump_in_progress; + +#endif /* _ASM_IA64_KEXEC_H */ --- 0001/linux-2.6-xen-sparse/include/asm-ia64/machvec.h +++ work/linux-2.6-xen-sparse/include/asm-ia64/machvec.h @@ -34,6 +34,7 @@ typedef int ia64_mv_pci_legacy_read_t (s typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val, u8 size); typedef void ia64_mv_migrate_t(struct task_struct * task); +typedef void ia64_mv_kernel_launch_event_t(void); /* DMA-mapping interface: */ typedef void ia64_mv_dma_init (void); @@ -194,6 +195,7 @@ struct ia64_machine_vector { ia64_mv_readq_relaxed_t *readq_relaxed; ia64_mv_migrate_t *migrate; ia64_mv_msi_init_t *msi_init; + ia64_mv_kernel_launch_event_t *kernel_launch_event; } __attribute__((__aligned__(16))); /* align attrib? see above comment */ #define MACHVEC_INIT(name) \ @@ -290,6 +292,9 @@ extern ia64_mv_dma_supported swiotlb_dm #ifndef platform_tlb_migrate_finish # define platform_tlb_migrate_finish machvec_noop_mm #endif +#ifndef platform_kernel_launch_event +# define platform_kernel_launch_event machvec_noop +#endif #ifndef platform_dma_init # define platform_dma_init swiotlb_init #endif --- 0001/linux-2.6-xen-sparse/include/asm-ia64/meminit.h +++ work/linux-2.6-xen-sparse/include/asm-ia64/meminit.h @@ -16,15 +16,16 @@ * - initrd (optional) * - command line string * - kernel code & data + * - crash dumping code reserved region * - Kernel memory map built from EFI memory map * - xen start info * * More could be added if necessary */ #ifndef CONFIG_XEN -#define IA64_MAX_RSVD_REGIONS 6 -#else #define IA64_MAX_RSVD_REGIONS 7 +#else +#define IA64_MAX_RSVD_REGIONS 8 #endif struct rsvd_region { --- 0001/linux-2.6-xen-sparse/include/asm-ia64/xen/xcom_hcall.h +++ work/linux-2.6-xen-sparse/include/asm-ia64/xen/xcom_hcall.h @@ -83,4 +83,6 @@ extern int xencomm_mini_hypercall_perfmo struct privcmd_hypercall; extern int privcmd_hypercall(struct privcmd_hypercall *hypercall); +extern int xencomm_hypercall_kexec_op(int cmd, void *arg); + #endif /* _LINUX_XENCOMM_HCALL_H_ */ --- 0001/linux-2.6-xen-sparse/include/linux/kexec.h +++ work/linux-2.6-xen-sparse/include/linux/kexec.h @@ -120,6 +120,10 @@ extern void crash_kexec(struct pt_regs * int kexec_should_crash(struct task_struct *); extern struct kimage *kexec_image; +#ifndef kexec_flush_icache_page +#define kexec_flush_icache_page(page) +#endif + #define KEXEC_ON_CRASH 0x00000001 #define KEXEC_ARCH_MASK 0xffff0000 @@ -143,6 +147,7 @@ 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; --- 0001/linux-2.6-xen-sparse/kernel/kexec.c +++ work/linux-2.6-xen-sparse/kernel/kexec.c @@ -864,6 +864,7 @@ 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;