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Message-ID: <202412210309.3gp7wpXb-lkp@intel.com>
Date: Sat, 21 Dec 2024 03:50:58 +0800
From: kernel test robot <lkp@...el.com>
To: AKASHI Takahiro <takahiro.akashi@...aro.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Will Deacon <will.deacon@....com>
Subject: arch/arm64/kernel/machine_kexec.c:148: warning: Function parameter
or struct member 'kimage' not described in 'machine_kexec'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 8faabc041a001140564f718dabe37753e88b37fa
commit: 3ddd9992a590c7462ff22f7cb17d386b83ed0a07 arm64: enable KEXEC_FILE config
date: 6 years ago
config: arm64-randconfig-002-20241212 (https://download.01.org/0day-ci/archive/20241221/202412210309.3gp7wpXb-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241221/202412210309.3gp7wpXb-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412210309.3gp7wpXb-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/arm64/kernel/machine_kexec.c:256:6: warning: no previous prototype for 'machine_crash_shutdown' [-Wmissing-prototypes]
256 | void machine_crash_shutdown(struct pt_regs *regs)
| ^~~~~~~~~~~~~~~~~~~~~~
>> arch/arm64/kernel/machine_kexec.c:36: warning: Function parameter or struct member '_i' not described in 'kexec_image_info'
>> arch/arm64/kernel/machine_kexec.c:72: warning: Function parameter or struct member 'kimage' not described in 'machine_kexec_prepare'
arch/arm64/kernel/machine_kexec.c:87: warning: Function parameter or struct member 'kimage' not described in 'kexec_list_flush'
>> arch/arm64/kernel/machine_kexec.c:124: warning: Function parameter or struct member 'kimage' not described in 'kexec_segment_flush'
>> arch/arm64/kernel/machine_kexec.c:148: warning: Function parameter or struct member 'kimage' not described in 'machine_kexec'
>> arch/arm64/kernel/machine_kexec.c:257: warning: Function parameter or struct member 'regs' not described in 'machine_crash_shutdown'
vim +148 arch/arm64/kernel/machine_kexec.c
d28f6df1305a86 Geoff Levand 2016-06-23 32
221f2c770e10d3 Geoff Levand 2016-06-23 33 /**
221f2c770e10d3 Geoff Levand 2016-06-23 34 * kexec_image_info - For debugging output.
221f2c770e10d3 Geoff Levand 2016-06-23 35 */
221f2c770e10d3 Geoff Levand 2016-06-23 @36 #define kexec_image_info(_i) _kexec_image_info(__func__, __LINE__, _i)
221f2c770e10d3 Geoff Levand 2016-06-23 37 static void _kexec_image_info(const char *func, int line,
221f2c770e10d3 Geoff Levand 2016-06-23 38 const struct kimage *kimage)
221f2c770e10d3 Geoff Levand 2016-06-23 39 {
221f2c770e10d3 Geoff Levand 2016-06-23 40 unsigned long i;
221f2c770e10d3 Geoff Levand 2016-06-23 41
221f2c770e10d3 Geoff Levand 2016-06-23 42 pr_debug("%s:%d:\n", func, line);
221f2c770e10d3 Geoff Levand 2016-06-23 43 pr_debug(" kexec kimage info:\n");
221f2c770e10d3 Geoff Levand 2016-06-23 44 pr_debug(" type: %d\n", kimage->type);
221f2c770e10d3 Geoff Levand 2016-06-23 45 pr_debug(" start: %lx\n", kimage->start);
221f2c770e10d3 Geoff Levand 2016-06-23 46 pr_debug(" head: %lx\n", kimage->head);
221f2c770e10d3 Geoff Levand 2016-06-23 47 pr_debug(" nr_segments: %lu\n", kimage->nr_segments);
221f2c770e10d3 Geoff Levand 2016-06-23 48
221f2c770e10d3 Geoff Levand 2016-06-23 49 for (i = 0; i < kimage->nr_segments; i++) {
221f2c770e10d3 Geoff Levand 2016-06-23 50 pr_debug(" segment[%lu]: %016lx - %016lx, 0x%lx bytes, %lu pages\n",
221f2c770e10d3 Geoff Levand 2016-06-23 51 i,
221f2c770e10d3 Geoff Levand 2016-06-23 52 kimage->segment[i].mem,
221f2c770e10d3 Geoff Levand 2016-06-23 53 kimage->segment[i].mem + kimage->segment[i].memsz,
221f2c770e10d3 Geoff Levand 2016-06-23 54 kimage->segment[i].memsz,
221f2c770e10d3 Geoff Levand 2016-06-23 55 kimage->segment[i].memsz / PAGE_SIZE);
221f2c770e10d3 Geoff Levand 2016-06-23 56 }
221f2c770e10d3 Geoff Levand 2016-06-23 57 }
221f2c770e10d3 Geoff Levand 2016-06-23 58
d28f6df1305a86 Geoff Levand 2016-06-23 59 void machine_kexec_cleanup(struct kimage *kimage)
d28f6df1305a86 Geoff Levand 2016-06-23 60 {
d28f6df1305a86 Geoff Levand 2016-06-23 61 /* Empty routine needed to avoid build errors. */
d28f6df1305a86 Geoff Levand 2016-06-23 62 }
d28f6df1305a86 Geoff Levand 2016-06-23 63
d28f6df1305a86 Geoff Levand 2016-06-23 64 /**
d28f6df1305a86 Geoff Levand 2016-06-23 65 * machine_kexec_prepare - Prepare for a kexec reboot.
d28f6df1305a86 Geoff Levand 2016-06-23 66 *
d28f6df1305a86 Geoff Levand 2016-06-23 67 * Called from the core kexec code when a kernel image is loaded.
d28f6df1305a86 Geoff Levand 2016-06-23 68 * Forbid loading a kexec kernel if we have no way of hotplugging cpus or cpus
d28f6df1305a86 Geoff Levand 2016-06-23 69 * are stuck in the kernel. This avoids a panic once we hit machine_kexec().
d28f6df1305a86 Geoff Levand 2016-06-23 70 */
d28f6df1305a86 Geoff Levand 2016-06-23 71 int machine_kexec_prepare(struct kimage *kimage)
d28f6df1305a86 Geoff Levand 2016-06-23 @72 {
221f2c770e10d3 Geoff Levand 2016-06-23 73 kexec_image_info(kimage);
221f2c770e10d3 Geoff Levand 2016-06-23 74
d28f6df1305a86 Geoff Levand 2016-06-23 75 if (kimage->type != KEXEC_TYPE_CRASH && cpus_are_stuck_in_kernel()) {
d28f6df1305a86 Geoff Levand 2016-06-23 76 pr_err("Can't kexec: CPUs are stuck in the kernel.\n");
d28f6df1305a86 Geoff Levand 2016-06-23 77 return -EBUSY;
d28f6df1305a86 Geoff Levand 2016-06-23 78 }
d28f6df1305a86 Geoff Levand 2016-06-23 79
d28f6df1305a86 Geoff Levand 2016-06-23 80 return 0;
d28f6df1305a86 Geoff Levand 2016-06-23 81 }
d28f6df1305a86 Geoff Levand 2016-06-23 82
d28f6df1305a86 Geoff Levand 2016-06-23 83 /**
d28f6df1305a86 Geoff Levand 2016-06-23 84 * kexec_list_flush - Helper to flush the kimage list and source pages to PoC.
d28f6df1305a86 Geoff Levand 2016-06-23 85 */
d28f6df1305a86 Geoff Levand 2016-06-23 86 static void kexec_list_flush(struct kimage *kimage)
d28f6df1305a86 Geoff Levand 2016-06-23 87 {
d28f6df1305a86 Geoff Levand 2016-06-23 88 kimage_entry_t *entry;
d28f6df1305a86 Geoff Levand 2016-06-23 89
d28f6df1305a86 Geoff Levand 2016-06-23 90 for (entry = &kimage->head; ; entry++) {
d28f6df1305a86 Geoff Levand 2016-06-23 91 unsigned int flag;
d28f6df1305a86 Geoff Levand 2016-06-23 92 void *addr;
d28f6df1305a86 Geoff Levand 2016-06-23 93
d28f6df1305a86 Geoff Levand 2016-06-23 94 /* flush the list entries. */
d28f6df1305a86 Geoff Levand 2016-06-23 95 __flush_dcache_area(entry, sizeof(kimage_entry_t));
d28f6df1305a86 Geoff Levand 2016-06-23 96
d28f6df1305a86 Geoff Levand 2016-06-23 97 flag = *entry & IND_FLAGS;
d28f6df1305a86 Geoff Levand 2016-06-23 98 if (flag == IND_DONE)
d28f6df1305a86 Geoff Levand 2016-06-23 99 break;
d28f6df1305a86 Geoff Levand 2016-06-23 100
d28f6df1305a86 Geoff Levand 2016-06-23 101 addr = phys_to_virt(*entry & PAGE_MASK);
d28f6df1305a86 Geoff Levand 2016-06-23 102
d28f6df1305a86 Geoff Levand 2016-06-23 103 switch (flag) {
d28f6df1305a86 Geoff Levand 2016-06-23 104 case IND_INDIRECTION:
d28f6df1305a86 Geoff Levand 2016-06-23 105 /* Set entry point just before the new list page. */
d28f6df1305a86 Geoff Levand 2016-06-23 106 entry = (kimage_entry_t *)addr - 1;
d28f6df1305a86 Geoff Levand 2016-06-23 107 break;
d28f6df1305a86 Geoff Levand 2016-06-23 108 case IND_SOURCE:
d28f6df1305a86 Geoff Levand 2016-06-23 109 /* flush the source pages. */
d28f6df1305a86 Geoff Levand 2016-06-23 110 __flush_dcache_area(addr, PAGE_SIZE);
d28f6df1305a86 Geoff Levand 2016-06-23 111 break;
d28f6df1305a86 Geoff Levand 2016-06-23 112 case IND_DESTINATION:
d28f6df1305a86 Geoff Levand 2016-06-23 113 break;
d28f6df1305a86 Geoff Levand 2016-06-23 114 default:
d28f6df1305a86 Geoff Levand 2016-06-23 115 BUG();
d28f6df1305a86 Geoff Levand 2016-06-23 116 }
d28f6df1305a86 Geoff Levand 2016-06-23 117 }
d28f6df1305a86 Geoff Levand 2016-06-23 118 }
d28f6df1305a86 Geoff Levand 2016-06-23 119
d28f6df1305a86 Geoff Levand 2016-06-23 120 /**
d28f6df1305a86 Geoff Levand 2016-06-23 121 * kexec_segment_flush - Helper to flush the kimage segments to PoC.
d28f6df1305a86 Geoff Levand 2016-06-23 122 */
d28f6df1305a86 Geoff Levand 2016-06-23 123 static void kexec_segment_flush(const struct kimage *kimage)
d28f6df1305a86 Geoff Levand 2016-06-23 @124 {
d28f6df1305a86 Geoff Levand 2016-06-23 125 unsigned long i;
d28f6df1305a86 Geoff Levand 2016-06-23 126
d28f6df1305a86 Geoff Levand 2016-06-23 127 pr_debug("%s:\n", __func__);
d28f6df1305a86 Geoff Levand 2016-06-23 128
d28f6df1305a86 Geoff Levand 2016-06-23 129 for (i = 0; i < kimage->nr_segments; i++) {
d28f6df1305a86 Geoff Levand 2016-06-23 130 pr_debug(" segment[%lu]: %016lx - %016lx, 0x%lx bytes, %lu pages\n",
d28f6df1305a86 Geoff Levand 2016-06-23 131 i,
d28f6df1305a86 Geoff Levand 2016-06-23 132 kimage->segment[i].mem,
d28f6df1305a86 Geoff Levand 2016-06-23 133 kimage->segment[i].mem + kimage->segment[i].memsz,
d28f6df1305a86 Geoff Levand 2016-06-23 134 kimage->segment[i].memsz,
d28f6df1305a86 Geoff Levand 2016-06-23 135 kimage->segment[i].memsz / PAGE_SIZE);
d28f6df1305a86 Geoff Levand 2016-06-23 136
d28f6df1305a86 Geoff Levand 2016-06-23 137 __flush_dcache_area(phys_to_virt(kimage->segment[i].mem),
d28f6df1305a86 Geoff Levand 2016-06-23 138 kimage->segment[i].memsz);
d28f6df1305a86 Geoff Levand 2016-06-23 139 }
d28f6df1305a86 Geoff Levand 2016-06-23 140 }
d28f6df1305a86 Geoff Levand 2016-06-23 141
d28f6df1305a86 Geoff Levand 2016-06-23 142 /**
d28f6df1305a86 Geoff Levand 2016-06-23 143 * machine_kexec - Do the kexec reboot.
d28f6df1305a86 Geoff Levand 2016-06-23 144 *
d28f6df1305a86 Geoff Levand 2016-06-23 145 * Called from the core kexec code for a sys_reboot with LINUX_REBOOT_CMD_KEXEC.
d28f6df1305a86 Geoff Levand 2016-06-23 146 */
d28f6df1305a86 Geoff Levand 2016-06-23 147 void machine_kexec(struct kimage *kimage)
d28f6df1305a86 Geoff Levand 2016-06-23 @148 {
d28f6df1305a86 Geoff Levand 2016-06-23 149 phys_addr_t reboot_code_buffer_phys;
d28f6df1305a86 Geoff Levand 2016-06-23 150 void *reboot_code_buffer;
78fd584cdec051 AKASHI Takahiro 2017-04-03 151 bool in_kexec_crash = (kimage == kexec_crash_image);
78fd584cdec051 AKASHI Takahiro 2017-04-03 152 bool stuck_cpus = cpus_are_stuck_in_kernel();
d28f6df1305a86 Geoff Levand 2016-06-23 153
d28f6df1305a86 Geoff Levand 2016-06-23 154 /*
d28f6df1305a86 Geoff Levand 2016-06-23 155 * New cpus may have become stuck_in_kernel after we loaded the image.
d28f6df1305a86 Geoff Levand 2016-06-23 156 */
78fd584cdec051 AKASHI Takahiro 2017-04-03 157 BUG_ON(!in_kexec_crash && (stuck_cpus || (num_online_cpus() > 1)));
78fd584cdec051 AKASHI Takahiro 2017-04-03 158 WARN(in_kexec_crash && (stuck_cpus || smp_crash_stop_failed()),
78fd584cdec051 AKASHI Takahiro 2017-04-03 159 "Some CPUs may be stale, kdump will be unreliable.\n");
d28f6df1305a86 Geoff Levand 2016-06-23 160
d28f6df1305a86 Geoff Levand 2016-06-23 161 reboot_code_buffer_phys = page_to_phys(kimage->control_code_page);
d28f6df1305a86 Geoff Levand 2016-06-23 162 reboot_code_buffer = phys_to_virt(reboot_code_buffer_phys);
d28f6df1305a86 Geoff Levand 2016-06-23 163
221f2c770e10d3 Geoff Levand 2016-06-23 164 kexec_image_info(kimage);
221f2c770e10d3 Geoff Levand 2016-06-23 165
221f2c770e10d3 Geoff Levand 2016-06-23 166 pr_debug("%s:%d: control_code_page: %p\n", __func__, __LINE__,
221f2c770e10d3 Geoff Levand 2016-06-23 167 kimage->control_code_page);
221f2c770e10d3 Geoff Levand 2016-06-23 168 pr_debug("%s:%d: reboot_code_buffer_phys: %pa\n", __func__, __LINE__,
221f2c770e10d3 Geoff Levand 2016-06-23 169 &reboot_code_buffer_phys);
221f2c770e10d3 Geoff Levand 2016-06-23 170 pr_debug("%s:%d: reboot_code_buffer: %p\n", __func__, __LINE__,
221f2c770e10d3 Geoff Levand 2016-06-23 171 reboot_code_buffer);
221f2c770e10d3 Geoff Levand 2016-06-23 172 pr_debug("%s:%d: relocate_new_kernel: %p\n", __func__, __LINE__,
221f2c770e10d3 Geoff Levand 2016-06-23 173 arm64_relocate_new_kernel);
221f2c770e10d3 Geoff Levand 2016-06-23 174 pr_debug("%s:%d: relocate_new_kernel_size: 0x%lx(%lu) bytes\n",
221f2c770e10d3 Geoff Levand 2016-06-23 175 __func__, __LINE__, arm64_relocate_new_kernel_size,
221f2c770e10d3 Geoff Levand 2016-06-23 176 arm64_relocate_new_kernel_size);
221f2c770e10d3 Geoff Levand 2016-06-23 177
d28f6df1305a86 Geoff Levand 2016-06-23 178 /*
d28f6df1305a86 Geoff Levand 2016-06-23 179 * Copy arm64_relocate_new_kernel to the reboot_code_buffer for use
d28f6df1305a86 Geoff Levand 2016-06-23 180 * after the kernel is shut down.
d28f6df1305a86 Geoff Levand 2016-06-23 181 */
d28f6df1305a86 Geoff Levand 2016-06-23 182 memcpy(reboot_code_buffer, arm64_relocate_new_kernel,
d28f6df1305a86 Geoff Levand 2016-06-23 183 arm64_relocate_new_kernel_size);
d28f6df1305a86 Geoff Levand 2016-06-23 184
d28f6df1305a86 Geoff Levand 2016-06-23 185 /* Flush the reboot_code_buffer in preparation for its execution. */
d28f6df1305a86 Geoff Levand 2016-06-23 186 __flush_dcache_area(reboot_code_buffer, arm64_relocate_new_kernel_size);
dcab90d90935f9 Will Deacon 2018-07-31 187
dcab90d90935f9 Will Deacon 2018-07-31 188 /*
dcab90d90935f9 Will Deacon 2018-07-31 189 * Although we've killed off the secondary CPUs, we don't update
dcab90d90935f9 Will Deacon 2018-07-31 190 * the online mask if we're handling a crash kernel and consequently
dcab90d90935f9 Will Deacon 2018-07-31 191 * need to avoid flush_icache_range(), which will attempt to IPI
dcab90d90935f9 Will Deacon 2018-07-31 192 * the offline CPUs. Therefore, we must use the __* variant here.
dcab90d90935f9 Will Deacon 2018-07-31 193 */
140aada48b5f1a Dave Kleikamp 2018-07-30 194 __flush_icache_range((uintptr_t)reboot_code_buffer,
d28f6df1305a86 Geoff Levand 2016-06-23 195 arm64_relocate_new_kernel_size);
d28f6df1305a86 Geoff Levand 2016-06-23 196
d28f6df1305a86 Geoff Levand 2016-06-23 197 /* Flush the kimage list and its buffers. */
d28f6df1305a86 Geoff Levand 2016-06-23 198 kexec_list_flush(kimage);
d28f6df1305a86 Geoff Levand 2016-06-23 199
d28f6df1305a86 Geoff Levand 2016-06-23 200 /* Flush the new image if already in place. */
98d2e1539b84ab Takahiro Akashi 2017-04-03 201 if ((kimage != kexec_crash_image) && (kimage->head & IND_DONE))
d28f6df1305a86 Geoff Levand 2016-06-23 202 kexec_segment_flush(kimage);
d28f6df1305a86 Geoff Levand 2016-06-23 203
d28f6df1305a86 Geoff Levand 2016-06-23 204 pr_info("Bye!\n");
d28f6df1305a86 Geoff Levand 2016-06-23 205
0fbeb318754860 James Morse 2017-11-02 206 local_daif_mask();
d28f6df1305a86 Geoff Levand 2016-06-23 207
d28f6df1305a86 Geoff Levand 2016-06-23 208 /*
d28f6df1305a86 Geoff Levand 2016-06-23 209 * cpu_soft_restart will shutdown the MMU, disable data caches, then
d28f6df1305a86 Geoff Levand 2016-06-23 210 * transfer control to the reboot_code_buffer which contains a copy of
d28f6df1305a86 Geoff Levand 2016-06-23 211 * the arm64_relocate_new_kernel routine. arm64_relocate_new_kernel
d28f6df1305a86 Geoff Levand 2016-06-23 212 * uses physical addressing to relocate the new image to its final
d28f6df1305a86 Geoff Levand 2016-06-23 213 * position and transfers control to the image entry point when the
d28f6df1305a86 Geoff Levand 2016-06-23 214 * relocation is complete.
d28f6df1305a86 Geoff Levand 2016-06-23 215 */
d28f6df1305a86 Geoff Levand 2016-06-23 216
76f4e2da45b44b Mark Rutland 2018-07-02 217 cpu_soft_restart(reboot_code_buffer_phys, kimage->head, kimage->start, 0);
d28f6df1305a86 Geoff Levand 2016-06-23 218
d28f6df1305a86 Geoff Levand 2016-06-23 219 BUG(); /* Should never get here. */
d28f6df1305a86 Geoff Levand 2016-06-23 220 }
d28f6df1305a86 Geoff Levand 2016-06-23 221
78fd584cdec051 AKASHI Takahiro 2017-04-03 222 static void machine_kexec_mask_interrupts(void)
78fd584cdec051 AKASHI Takahiro 2017-04-03 223 {
78fd584cdec051 AKASHI Takahiro 2017-04-03 224 unsigned int i;
78fd584cdec051 AKASHI Takahiro 2017-04-03 225 struct irq_desc *desc;
78fd584cdec051 AKASHI Takahiro 2017-04-03 226
78fd584cdec051 AKASHI Takahiro 2017-04-03 227 for_each_irq_desc(i, desc) {
78fd584cdec051 AKASHI Takahiro 2017-04-03 228 struct irq_chip *chip;
78fd584cdec051 AKASHI Takahiro 2017-04-03 229 int ret;
78fd584cdec051 AKASHI Takahiro 2017-04-03 230
78fd584cdec051 AKASHI Takahiro 2017-04-03 231 chip = irq_desc_get_chip(desc);
78fd584cdec051 AKASHI Takahiro 2017-04-03 232 if (!chip)
78fd584cdec051 AKASHI Takahiro 2017-04-03 233 continue;
78fd584cdec051 AKASHI Takahiro 2017-04-03 234
78fd584cdec051 AKASHI Takahiro 2017-04-03 235 /*
78fd584cdec051 AKASHI Takahiro 2017-04-03 236 * First try to remove the active state. If this
78fd584cdec051 AKASHI Takahiro 2017-04-03 237 * fails, try to EOI the interrupt.
78fd584cdec051 AKASHI Takahiro 2017-04-03 238 */
78fd584cdec051 AKASHI Takahiro 2017-04-03 239 ret = irq_set_irqchip_state(i, IRQCHIP_STATE_ACTIVE, false);
78fd584cdec051 AKASHI Takahiro 2017-04-03 240
78fd584cdec051 AKASHI Takahiro 2017-04-03 241 if (ret && irqd_irq_inprogress(&desc->irq_data) &&
78fd584cdec051 AKASHI Takahiro 2017-04-03 242 chip->irq_eoi)
78fd584cdec051 AKASHI Takahiro 2017-04-03 243 chip->irq_eoi(&desc->irq_data);
78fd584cdec051 AKASHI Takahiro 2017-04-03 244
78fd584cdec051 AKASHI Takahiro 2017-04-03 245 if (chip->irq_mask)
78fd584cdec051 AKASHI Takahiro 2017-04-03 246 chip->irq_mask(&desc->irq_data);
78fd584cdec051 AKASHI Takahiro 2017-04-03 247
78fd584cdec051 AKASHI Takahiro 2017-04-03 248 if (chip->irq_disable && !irqd_irq_disabled(&desc->irq_data))
78fd584cdec051 AKASHI Takahiro 2017-04-03 249 chip->irq_disable(&desc->irq_data);
78fd584cdec051 AKASHI Takahiro 2017-04-03 250 }
78fd584cdec051 AKASHI Takahiro 2017-04-03 251 }
78fd584cdec051 AKASHI Takahiro 2017-04-03 252
78fd584cdec051 AKASHI Takahiro 2017-04-03 253 /**
78fd584cdec051 AKASHI Takahiro 2017-04-03 254 * machine_crash_shutdown - shutdown non-crashing cpus and save registers
78fd584cdec051 AKASHI Takahiro 2017-04-03 255 */
d28f6df1305a86 Geoff Levand 2016-06-23 @256 void machine_crash_shutdown(struct pt_regs *regs)
d28f6df1305a86 Geoff Levand 2016-06-23 @257 {
78fd584cdec051 AKASHI Takahiro 2017-04-03 258 local_irq_disable();
78fd584cdec051 AKASHI Takahiro 2017-04-03 259
78fd584cdec051 AKASHI Takahiro 2017-04-03 260 /* shutdown non-crashing cpus */
a88ce63b642cf8 Hoeun Ryu 2017-08-17 261 crash_smp_send_stop();
78fd584cdec051 AKASHI Takahiro 2017-04-03 262
78fd584cdec051 AKASHI Takahiro 2017-04-03 263 /* for crashing cpu */
78fd584cdec051 AKASHI Takahiro 2017-04-03 264 crash_save_cpu(regs, smp_processor_id());
78fd584cdec051 AKASHI Takahiro 2017-04-03 265 machine_kexec_mask_interrupts();
78fd584cdec051 AKASHI Takahiro 2017-04-03 266
78fd584cdec051 AKASHI Takahiro 2017-04-03 267 pr_info("Starting crashdump kernel...\n");
d28f6df1305a86 Geoff Levand 2016-06-23 268 }
98d2e1539b84ab Takahiro Akashi 2017-04-03 269
:::::: The code at line 148 was first introduced by commit
:::::: d28f6df1305a86715e4e7ea0f043ba01c0a0e8d9 arm64/kexec: Add core kexec support
:::::: TO: Geoff Levand <geoff@...radead.org>
:::::: CC: Catalin Marinas <catalin.marinas@....com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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