mce.c (976e3645923bdd2fe7893aae33fd7a21098bfb28) mce.c (efbc4303b255bb80ab1283794b36dd5fe1fb0ec3)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Machine check exception handling.
4 *
5 * Copyright 2013 IBM Corporation
6 * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
7 */
8
9#undef DEBUG
10#define pr_fmt(fmt) "mce: " fmt
11
12#include <linux/hardirq.h>
13#include <linux/types.h>
14#include <linux/ptrace.h>
15#include <linux/percpu.h>
16#include <linux/export.h>
17#include <linux/irq_work.h>
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Machine check exception handling.
4 *
5 * Copyright 2013 IBM Corporation
6 * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
7 */
8
9#undef DEBUG
10#define pr_fmt(fmt) "mce: " fmt
11
12#include <linux/hardirq.h>
13#include <linux/types.h>
14#include <linux/ptrace.h>
15#include <linux/percpu.h>
16#include <linux/export.h>
17#include <linux/irq_work.h>
18#include <linux/extable.h>
18
19#include <asm/machdep.h>
20#include <asm/mce.h>
21#include <asm/nmi.h>
22
23static DEFINE_PER_CPU(int, mce_nest_count);
24static DEFINE_PER_CPU(struct machine_check_event[MAX_MC_EVT], mce_event);
25

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246 __this_cpu_dec(mce_queue_count);
247 return;
248 }
249 memcpy(this_cpu_ptr(&mce_event_queue[index]), &evt, sizeof(evt));
250
251 /* Queue irq work to process this event later. */
252 irq_work_queue(&mce_event_process_work);
253}
19
20#include <asm/machdep.h>
21#include <asm/mce.h>
22#include <asm/nmi.h>
23
24static DEFINE_PER_CPU(int, mce_nest_count);
25static DEFINE_PER_CPU(struct machine_check_event[MAX_MC_EVT], mce_event);
26

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247 __this_cpu_dec(mce_queue_count);
248 return;
249 }
250 memcpy(this_cpu_ptr(&mce_event_queue[index]), &evt, sizeof(evt));
251
252 /* Queue irq work to process this event later. */
253 irq_work_queue(&mce_event_process_work);
254}
255
256void mce_common_process_ue(struct pt_regs *regs,
257 struct mce_error_info *mce_err)
258{
259 const struct exception_table_entry *entry;
260
261 entry = search_kernel_exception_table(regs->nip);
262 if (entry) {
263 mce_err->ignore_event = true;
264 regs->nip = extable_fixup(entry);
265 }
266}
267
254/*
255 * process pending MCE event from the mce event queue. This function will be
256 * called during syscall exit.
257 */
258static void machine_process_ue_event(struct work_struct *work)
259{
260 int index;
261 struct machine_check_event *evt;

--- 439 unchanged lines hidden --- 		268/*
269 * process pending MCE event from the mce event queue. This function will be
270 * called during syscall exit.
271 */
272static void machine_process_ue_event(struct work_struct *work)
273{
274 int index;
275 struct machine_check_event *evt;

--- 439 unchanged lines hidden ---