summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/x86/entry/entry_32.S9
-rw-r--r--arch/x86/entry/entry_64.S3
-rw-r--r--arch/x86/include/asm/idtentry.h4
-rw-r--r--arch/x86/include/asm/mce.h2
-rw-r--r--arch/x86/include/asm/traps.h7
-rw-r--r--arch/x86/kernel/cpu/mce/core.c23
-rw-r--r--arch/x86/kernel/cpu/mce/inject.c4
-rw-r--r--arch/x86/kernel/cpu/mce/internal.h2
-rw-r--r--arch/x86/kernel/cpu/mce/p5.c2
-rw-r--r--arch/x86/kernel/cpu/mce/winchip.c2
-rw-r--r--arch/x86/kernel/idt.c10
-rw-r--r--arch/x86/kvm/svm/svm.c2
-rw-r--r--arch/x86/kvm/vmx/vmx.c2
-rw-r--r--arch/x86/xen/enlighten_pv.c2
-rw-r--r--arch/x86/xen/xen-asm_64.S2
15 files changed, 33 insertions, 43 deletions
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index b9b0ddb53a08..4dd3d706d9fc 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -1297,15 +1297,6 @@ SYM_CODE_START(native_iret)
SYM_CODE_END(native_iret)
#endif
-#ifdef CONFIG_X86_MCE
-SYM_CODE_START(machine_check)
- ASM_CLAC
- pushl $0
- pushl $do_mce
- jmp common_exception
-SYM_CODE_END(machine_check)
-#endif
-
#ifdef CONFIG_XEN_PV
SYM_FUNC_START(xen_hypervisor_callback)
/*
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 69ddd052aef2..5007b975ca7c 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -1074,9 +1074,6 @@ apicinterrupt IRQ_WORK_VECTOR irq_work_interrupt smp_irq_work_interrupt
idtentry X86_TRAP_PF page_fault do_page_fault has_error_code=1
-#ifdef CONFIG_X86_MCE
-idtentry_mce_db X86_TRAP_MCE machine_check do_mce
-#endif
idtentry_mce_db X86_TRAP_DB debug do_debug
idtentry_df X86_TRAP_DF double_fault do_double_fault
diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h
index 3edd6d011ecd..36fe964c0d53 100644
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -238,4 +238,8 @@ DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_AC, exc_alignment_check);
/* Raw exception entries which need extra work */
DECLARE_IDTENTRY_RAW(X86_TRAP_BP, exc_int3);
+#ifdef CONFIG_X86_MCE
+DECLARE_IDTENTRY_MCE(X86_TRAP_MC, exc_machine_check);
+#endif
+
#endif
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index f9cea081c05b..a00130112b02 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -238,7 +238,7 @@ extern void mce_disable_bank(int bank);
/*
* Exception handler
*/
-void do_machine_check(struct pt_regs *, long);
+void do_machine_check(struct pt_regs *pt_regs);
/*
* Threshold handler
diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h
index 698285a2b660..6096db912625 100644
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -18,25 +18,18 @@ asmlinkage void double_fault(void);
#endif
asmlinkage void page_fault(void);
asmlinkage void async_page_fault(void);
-#ifdef CONFIG_X86_MCE
-asmlinkage void machine_check(void);
-#endif /* CONFIG_X86_MCE */
#if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV)
asmlinkage void xen_xennmi(void);
asmlinkage void xen_xendebug(void);
asmlinkage void xen_double_fault(void);
asmlinkage void xen_page_fault(void);
-#ifdef CONFIG_X86_MCE
-asmlinkage void xen_machine_check(void);
-#endif /* CONFIG_X86_MCE */
#endif
dotraplinkage void do_debug(struct pt_regs *regs, long error_code);
dotraplinkage void do_nmi(struct pt_regs *regs, long error_code);
dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code, unsigned long cr2);
dotraplinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address);
-dotraplinkage void do_mce(struct pt_regs *regs, long error_code);
#ifdef CONFIG_X86_64
asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs);
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index f5993ed6e16b..842dd03c3918 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1232,7 +1232,7 @@ static void kill_me_maybe(struct callback_head *cb)
* backing the user stack, tracing that reads the user stack will cause
* potentially infinite recursion.
*/
-void noinstr do_machine_check(struct pt_regs *regs, long error_code)
+void noinstr do_machine_check(struct pt_regs *regs)
{
DECLARE_BITMAP(valid_banks, MAX_NR_BANKS);
DECLARE_BITMAP(toclear, MAX_NR_BANKS);
@@ -1366,7 +1366,7 @@ void noinstr do_machine_check(struct pt_regs *regs, long error_code)
current->mce_kill_me.func = kill_me_now;
task_work_add(current, &current->mce_kill_me, true);
} else {
- if (!fixup_exception(regs, X86_TRAP_MC, error_code, 0))
+ if (!fixup_exception(regs, X86_TRAP_MC, 0, 0))
mce_panic("Failed kernel mode recovery", &m, msg);
}
}
@@ -1895,27 +1895,32 @@ bool filter_mce(struct mce *m)
}
/* Handle unconfigured int18 (should never happen) */
-static void unexpected_machine_check(struct pt_regs *regs, long error_code)
+static void unexpected_machine_check(struct pt_regs *regs)
{
pr_err("CPU#%d: Unexpected int18 (Machine Check)\n",
smp_processor_id());
}
/* Call the installed machine check handler for this CPU setup. */
-void (*machine_check_vector)(struct pt_regs *, long error_code) =
- unexpected_machine_check;
+void (*machine_check_vector)(struct pt_regs *) = unexpected_machine_check;
-dotraplinkage noinstr void do_mce(struct pt_regs *regs, long error_code)
+DEFINE_IDTENTRY_MCE(exc_machine_check)
{
if (machine_check_vector == do_machine_check &&
mce_check_crashing_cpu())
return;
- nmi_enter();
+ if (user_mode(regs))
+ idtentry_enter(regs);
+ else
+ nmi_enter();
- machine_check_vector(regs, error_code);
+ machine_check_vector(regs);
- nmi_exit();
+ if (user_mode(regs))
+ idtentry_exit(regs);
+ else
+ nmi_exit();
}
/*
diff --git a/arch/x86/kernel/cpu/mce/inject.c b/arch/x86/kernel/cpu/mce/inject.c
index 3413b41b8d55..0593b192eb8f 100644
--- a/arch/x86/kernel/cpu/mce/inject.c
+++ b/arch/x86/kernel/cpu/mce/inject.c
@@ -146,9 +146,9 @@ static void raise_exception(struct mce *m, struct pt_regs *pregs)
regs.cs = m->cs;
pregs = &regs;
}
- /* in mcheck exeception handler, irq will be disabled */
+ /* do_machine_check() expects interrupts disabled -- at least */
local_irq_save(flags);
- do_machine_check(pregs, 0);
+ do_machine_check(pregs);
local_irq_restore(flags);
m->finished = 0;
}
diff --git a/arch/x86/kernel/cpu/mce/internal.h b/arch/x86/kernel/cpu/mce/internal.h
index 3b008172ad73..b74ca4a28c66 100644
--- a/arch/x86/kernel/cpu/mce/internal.h
+++ b/arch/x86/kernel/cpu/mce/internal.h
@@ -9,7 +9,7 @@
#include <asm/mce.h>
/* Pointer to the installed machine check handler for this CPU setup. */
-extern void (*machine_check_vector)(struct pt_regs *, long error_code);
+extern void (*machine_check_vector)(struct pt_regs *);
enum severity_level {
MCE_NO_SEVERITY,
diff --git a/arch/x86/kernel/cpu/mce/p5.c b/arch/x86/kernel/cpu/mce/p5.c
index dc29f0f7b3ed..eaebc4ce7398 100644
--- a/arch/x86/kernel/cpu/mce/p5.c
+++ b/arch/x86/kernel/cpu/mce/p5.c
@@ -21,7 +21,7 @@
int mce_p5_enabled __read_mostly;
/* Machine check handler for Pentium class Intel CPUs: */
-static void pentium_machine_check(struct pt_regs *regs, long error_code)
+static void pentium_machine_check(struct pt_regs *regs)
{
u32 loaddr, hi, lotype;
diff --git a/arch/x86/kernel/cpu/mce/winchip.c b/arch/x86/kernel/cpu/mce/winchip.c
index 3f8f84ba0f51..90e3d60c645e 100644
--- a/arch/x86/kernel/cpu/mce/winchip.c
+++ b/arch/x86/kernel/cpu/mce/winchip.c
@@ -17,7 +17,7 @@
#include "internal.h"
/* Machine check handler for WinChip C6: */
-static void winchip_machine_check(struct pt_regs *regs, long error_code)
+static void winchip_machine_check(struct pt_regs *regs)
{
pr_emerg("CPU0: Machine Check Exception.\n");
add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c
index 9ca8af65a212..6b93840784d5 100644
--- a/arch/x86/kernel/idt.c
+++ b/arch/x86/kernel/idt.c
@@ -96,7 +96,7 @@ static const __initconst struct idt_data def_idts[] = {
INTG(X86_TRAP_DB, debug),
#ifdef CONFIG_X86_MCE
- INTG(X86_TRAP_MC, machine_check),
+ INTG(X86_TRAP_MC, asm_exc_machine_check),
#endif
SYSG(X86_TRAP_OF, asm_exc_overflow),
@@ -185,11 +185,11 @@ gate_desc debug_idt_table[IDT_ENTRIES] __page_aligned_bss;
* cpu_init() when the TSS has been initialized.
*/
static const __initconst struct idt_data ist_idts[] = {
- ISTG(X86_TRAP_DB, debug, IST_INDEX_DB),
- ISTG(X86_TRAP_NMI, nmi, IST_INDEX_NMI),
- ISTG(X86_TRAP_DF, double_fault, IST_INDEX_DF),
+ ISTG(X86_TRAP_DB, debug, IST_INDEX_DB),
+ ISTG(X86_TRAP_NMI, nmi, IST_INDEX_NMI),
+ ISTG(X86_TRAP_DF, double_fault, IST_INDEX_DF),
#ifdef CONFIG_X86_MCE
- ISTG(X86_TRAP_MC, machine_check, IST_INDEX_MCE),
+ ISTG(X86_TRAP_MC, asm_exc_machine_check, IST_INDEX_MCE),
#endif
};
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 9e333b91ff78..7502cd65528f 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1837,7 +1837,7 @@ static void kvm_machine_check(void)
.flags = X86_EFLAGS_IF,
};
- do_machine_check(&regs, 0);
+ do_machine_check(&regs);
#endif
}
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 170cc76a581f..2b5ba6063a2d 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4683,7 +4683,7 @@ static void kvm_machine_check(void)
.flags = X86_EFLAGS_IF,
};
- do_machine_check(&regs, 0);
+ do_machine_check(&regs);
#endif
}
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 5bcd86c4dff0..267583f9b207 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -613,7 +613,7 @@ static struct trap_array_entry trap_array[] = {
{ debug, xen_xendebug, true },
{ double_fault, xen_double_fault, true },
#ifdef CONFIG_X86_MCE
- { machine_check, xen_machine_check, true },
+ TRAP_ENTRY(exc_machine_check, true ),
#endif
{ nmi, xen_xennmi, true },
TRAP_ENTRY(exc_int3, false ),
diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
index 44f55569a37f..617ef3f98160 100644
--- a/arch/x86/xen/xen-asm_64.S
+++ b/arch/x86/xen/xen-asm_64.S
@@ -48,7 +48,7 @@ xen_pv_trap asm_exc_spurious_interrupt_bug
xen_pv_trap asm_exc_coprocessor_error
xen_pv_trap asm_exc_alignment_check
#ifdef CONFIG_X86_MCE
-xen_pv_trap machine_check
+xen_pv_trap asm_exc_machine_check
#endif /* CONFIG_X86_MCE */
xen_pv_trap asm_exc_simd_coprocessor_error
#ifdef CONFIG_IA32_EMULATION
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 04:02:31 +0100