ia64 Kexec/Kdump patch for 2.6.18 > ia64 Kexec/Kdump patch for 2.6.18 > > Fixes since last patch: > > 1. Check val in kdump_init_notifier. > 2. write EOI to clean in-service flag to make kdump work when crash > happen inside irq handler. > 3. Make CONFIG_KEXEC and CONFIG_CRASH_DUMP depends on !CONFIG_HP_SIM. > > Signed-off-by: Zou Nan hai <nanhai.zou@xxxxxxxxx> Incremental version of this patch Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx> Index: linux-2.6/arch/ia64/Kconfig =================================================================== --- linux-2.6.orig/arch/ia64/Kconfig 2006-09-22 12:55:26.000000000 +0900 +++ linux-2.6/arch/ia64/Kconfig 2006-09-22 12:55:46.000000000 +0900 @@ -433,7 +433,7 @@ config KEXEC bool "kexec system call (EXPERIMENTAL)" - depends on EXPERIMENTAL + depends on EXPERIMENTAL && !IA64_HP_SIM 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 @@ -450,7 +450,7 @@ config CRASH_DUMP bool "kernel crash dumps (EXPERIMENTAL)" - depends on EXPERIMENTAL && IA64_MCA_RECOVERY + depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM help Generate crash dump after being started by kexec. Index: linux-2.6/arch/ia64/kernel/crash.c =================================================================== --- linux-2.6.orig/arch/ia64/kernel/crash.c 2006-09-22 12:55:26.000000000 +0900 +++ linux-2.6/arch/ia64/kernel/crash.c 2006-09-22 12:55:27.000000000 +0900 @@ -25,7 +25,7 @@ atomic_t kdump_cpu_freezed; int kdump_on_init = 1; -ssize_t +ssize_t copy_oldmem_page(unsigned long pfn, char *buf, size_t csize, unsigned long offset, int userbuf) { @@ -131,7 +131,7 @@ #endif } -static void +static void machine_kdump_on_init(void) { local_irq_disable(); @@ -160,6 +160,10 @@ if (!kdump_on_init) return NOTIFY_DONE; + + if (val != DIE_INIT_MONARCH_ENTER && val != DIE_INIT_SLAVE_ENTER) + return NOTIFY_DONE; + nd = (struct ia64_mca_notify_die *)args->err; /* Reason code 1 means machine check rendezous*/ if (nd->sos->rv_rc == 1) @@ -168,7 +172,7 @@ switch (val) { case DIE_INIT_MONARCH_ENTER: machine_kdump_on_init(); - break; + break; case DIE_INIT_SLAVE_ENTER: unw_init_running(kdump_cpu_freeze, NULL); break; @@ -178,12 +182,12 @@ #ifdef CONFIG_SYSCTL static ctl_table kdump_on_init_table[] = { - { - .ctl_name = KERN_KDUMP_ON_INIT, + { + .ctl_name = KERN_KDUMP_ON_INIT, .procname = "kdump_on_init", - .data = &kdump_on_init, + .data = &kdump_on_init, .maxlen = sizeof(int), - .mode = 0644, + .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = 0 } @@ -191,9 +195,9 @@ static ctl_table sys_table[] = { { - .ctl_name = CTL_KERN, + .ctl_name = CTL_KERN, .procname = "kernel", - .mode = 0555, + .mode = 0555, .child = kdump_on_init_table, }, { .ctl_name = 0 } @@ -214,9 +218,8 @@ 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 + register_sysctl_table(sys_table, 0); +#endif return 0; } Index: linux-2.6/arch/ia64/kernel/efi.c =================================================================== --- linux-2.6.orig/arch/ia64/kernel/efi.c 2006-09-22 12:55:26.000000000 +0900 +++ linux-2.6/arch/ia64/kernel/efi.c 2006-09-22 12:55:27.000000000 +0900 @@ -1126,7 +1126,7 @@ #ifdef CONFIG_KEXEC insert_resource(res, &efi_memmap_res); insert_resource(res, &boot_param_res); - if (crashk_res.end > crashk_res.start) + if (crashk_res.end > crashk_res.start) insert_resource(res, &crashk_res); #endif } @@ -1137,12 +1137,12 @@ /* find a block of memory aligned to 64M exclude reserved regions rsvd_regions are sorted */ -unsigned long -kdump_find_rsvd_region (unsigned long size, +unsigned long +kdump_find_rsvd_region (unsigned long size, struct rsvd_region *r, int n) { int i; - u64 start, end; + u64 start, end; u64 alignment = 1UL << _PAGE_SIZE_64M; void *efi_map_start, *efi_map_end, *p; efi_memory_desc_t *md; @@ -1173,8 +1173,8 @@ return start; } - printk(KERN_WARNING "Cannot reserve 0x%lx byte of memory for crashdump\n", + printk(KERN_WARNING "Cannot reserve 0x%lx byte of memory for crashdump\n", size); return ~0UL; } -#endif +#endif Index: linux-2.6/arch/ia64/kernel/iosapic.c =================================================================== --- linux-2.6.orig/arch/ia64/kernel/iosapic.c 2006-09-22 12:55:26.000000000 +0900 +++ linux-2.6/arch/ia64/kernel/iosapic.c 2006-09-22 12:55:27.000000000 +0900 @@ -301,7 +301,7 @@ list_for_each_entry(rte, &info->rtes, rte_list) { iosapic_write(rte->addr, - IOSAPIC_RTE_LOW(rte->rte_index), + IOSAPIC_RTE_LOW(rte->rte_index), IOSAPIC_MASK); iosapic_eoi(rte->addr, vec); } Index: linux-2.6/arch/ia64/kernel/machine_kexec.c =================================================================== --- linux-2.6.orig/arch/ia64/kernel/machine_kexec.c 2006-09-22 12:55:26.000000000 +0900 +++ linux-2.6/arch/ia64/kernel/machine_kexec.c 2006-09-22 12:55:27.000000000 +0900 @@ -87,13 +87,14 @@ * 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) +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(); @@ -102,7 +103,7 @@ /* 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); @@ -112,6 +113,10 @@ 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(); @@ -124,7 +129,7 @@ (*rnk)(image->head, image->start, ia64_boot_param, GRANULEROUNDDOWN((unsigned long) pal_addr)); BUG(); -} +} void machine_kexec(struct kimage *image) { Index: linux-2.6/arch/ia64/kernel/setup.c =================================================================== --- linux-2.6.orig/arch/ia64/kernel/setup.c 2006-09-22 12:55:26.000000000 +0900 +++ linux-2.6/arch/ia64/kernel/setup.c 2006-09-22 12:55:27.000000000 +0900 @@ -258,10 +258,9 @@ #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. + * 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="); @@ -270,7 +269,7 @@ size = memparse(from + 12, &from); if (size) { sort_regions(rsvd_region, n); - base = kdump_find_rsvd_region(size, + base = kdump_find_rsvd_region(size, rsvd_region, n); if (base != ~0UL) { rsvd_region[n].start = Index: linux-2.6/include/asm-ia64/kexec.h =================================================================== --- linux-2.6.orig/include/asm-ia64/kexec.h 2006-09-22 12:55:26.000000000 +0900 +++ linux-2.6/include/asm-ia64/kexec.h 2006-09-22 12:55:27.000000000 +0900 @@ -44,7 +44,7 @@ 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, +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[]; - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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