mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 11:55:03 +07:00
c6dd78fcb8
Pull x86 fixes from Thomas Gleixner:
"A set of x86 specific fixes and updates:
- The CR2 corruption fixes which store CR2 early in the entry code
and hand the stored address to the fault handlers.
- Revert a forgotten leftover of the dropped FSGSBASE series.
- Plug a memory leak in the boot code.
- Make the Hyper-V assist functionality robust by zeroing the shadow
page.
- Remove a useless check for dead processes with LDT
- Update paravirt and VMware maintainers entries.
- A few cleanup patches addressing various compiler warnings"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/entry/64: Prevent clobbering of saved CR2 value
x86/hyper-v: Zero out the VP ASSIST PAGE on allocation
x86, boot: Remove multiple copy of static function sanitize_boot_params()
x86/boot/compressed/64: Remove unused variable
x86/boot/efi: Remove unused variables
x86/mm, tracing: Fix CR2 corruption
x86/entry/64: Update comments and sanity tests for create_gap
x86/entry/64: Simplify idtentry a little
x86/entry/32: Simplify common_exception
x86/paravirt: Make read_cr2() CALLEE_SAVE
MAINTAINERS: Update PARAVIRT_OPS_INTERFACE and VMWARE_HYPERVISOR_INTERFACE
x86/process: Delete useless check for dead process with LDT
x86: math-emu: Hide clang warnings for 16-bit overflow
x86/e820: Use proper booleans instead of 0/1
x86/apic: Silence -Wtype-limits compiler warnings
x86/mm: Free sme_early_buffer after init
x86/boot: Fix memory leak in default_get_smp_config()
Revert "x86/ptrace: Prevent ptrace from clearing the FS/GS selector" and fix the test
176 lines
6.5 KiB
C
176 lines
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_TRAPS_H
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#define _ASM_X86_TRAPS_H
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#include <linux/context_tracking_state.h>
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#include <linux/kprobes.h>
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#include <asm/debugreg.h>
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#include <asm/siginfo.h> /* TRAP_TRACE, ... */
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#define dotraplinkage __visible
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asmlinkage void divide_error(void);
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asmlinkage void debug(void);
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asmlinkage void nmi(void);
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asmlinkage void int3(void);
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asmlinkage void overflow(void);
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asmlinkage void bounds(void);
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asmlinkage void invalid_op(void);
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asmlinkage void device_not_available(void);
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#ifdef CONFIG_X86_64
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asmlinkage void double_fault(void);
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#endif
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asmlinkage void coprocessor_segment_overrun(void);
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asmlinkage void invalid_TSS(void);
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asmlinkage void segment_not_present(void);
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asmlinkage void stack_segment(void);
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asmlinkage void general_protection(void);
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asmlinkage void page_fault(void);
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asmlinkage void async_page_fault(void);
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asmlinkage void spurious_interrupt_bug(void);
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asmlinkage void coprocessor_error(void);
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asmlinkage void alignment_check(void);
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#ifdef CONFIG_X86_MCE
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asmlinkage void machine_check(void);
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#endif /* CONFIG_X86_MCE */
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asmlinkage void simd_coprocessor_error(void);
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#if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV)
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asmlinkage void xen_divide_error(void);
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asmlinkage void xen_xennmi(void);
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asmlinkage void xen_xendebug(void);
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asmlinkage void xen_int3(void);
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asmlinkage void xen_overflow(void);
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asmlinkage void xen_bounds(void);
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asmlinkage void xen_invalid_op(void);
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asmlinkage void xen_device_not_available(void);
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asmlinkage void xen_double_fault(void);
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asmlinkage void xen_coprocessor_segment_overrun(void);
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asmlinkage void xen_invalid_TSS(void);
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asmlinkage void xen_segment_not_present(void);
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asmlinkage void xen_stack_segment(void);
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asmlinkage void xen_general_protection(void);
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asmlinkage void xen_page_fault(void);
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asmlinkage void xen_spurious_interrupt_bug(void);
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asmlinkage void xen_coprocessor_error(void);
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asmlinkage void xen_alignment_check(void);
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#ifdef CONFIG_X86_MCE
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asmlinkage void xen_machine_check(void);
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#endif /* CONFIG_X86_MCE */
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asmlinkage void xen_simd_coprocessor_error(void);
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#endif
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dotraplinkage void do_divide_error(struct pt_regs *regs, long error_code);
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dotraplinkage void do_debug(struct pt_regs *regs, long error_code);
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dotraplinkage void do_nmi(struct pt_regs *regs, long error_code);
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dotraplinkage void do_int3(struct pt_regs *regs, long error_code);
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dotraplinkage void do_overflow(struct pt_regs *regs, long error_code);
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dotraplinkage void do_bounds(struct pt_regs *regs, long error_code);
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dotraplinkage void do_invalid_op(struct pt_regs *regs, long error_code);
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dotraplinkage void do_device_not_available(struct pt_regs *regs, long error_code);
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dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *regs, long error_code);
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dotraplinkage void do_invalid_TSS(struct pt_regs *regs, long error_code);
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dotraplinkage void do_segment_not_present(struct pt_regs *regs, long error_code);
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dotraplinkage void do_stack_segment(struct pt_regs *regs, long error_code);
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#ifdef CONFIG_X86_64
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dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code, unsigned long address);
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asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs);
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asmlinkage __visible notrace
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struct bad_iret_stack *fixup_bad_iret(struct bad_iret_stack *s);
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void __init trap_init(void);
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#endif
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dotraplinkage void do_general_protection(struct pt_regs *regs, long error_code);
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dotraplinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address);
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dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *regs, long error_code);
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dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code);
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dotraplinkage void do_alignment_check(struct pt_regs *regs, long error_code);
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#ifdef CONFIG_X86_MCE
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dotraplinkage void do_machine_check(struct pt_regs *regs, long error_code);
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#endif
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dotraplinkage void do_simd_coprocessor_error(struct pt_regs *regs, long error_code);
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#ifdef CONFIG_X86_32
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dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code);
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#endif
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dotraplinkage void do_mce(struct pt_regs *regs, long error_code);
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static inline int get_si_code(unsigned long condition)
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{
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if (condition & DR_STEP)
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return TRAP_TRACE;
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else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3))
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return TRAP_HWBKPT;
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else
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return TRAP_BRKPT;
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}
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extern int panic_on_unrecovered_nmi;
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void math_emulate(struct math_emu_info *);
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#ifndef CONFIG_X86_32
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asmlinkage void smp_thermal_interrupt(struct pt_regs *regs);
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asmlinkage void smp_threshold_interrupt(struct pt_regs *regs);
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asmlinkage void smp_deferred_error_interrupt(struct pt_regs *regs);
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#endif
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void smp_apic_timer_interrupt(struct pt_regs *regs);
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void smp_spurious_interrupt(struct pt_regs *regs);
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void smp_error_interrupt(struct pt_regs *regs);
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asmlinkage void smp_irq_move_cleanup_interrupt(void);
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extern void ist_enter(struct pt_regs *regs);
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extern void ist_exit(struct pt_regs *regs);
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extern void ist_begin_non_atomic(struct pt_regs *regs);
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extern void ist_end_non_atomic(void);
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#ifdef CONFIG_VMAP_STACK
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void __noreturn handle_stack_overflow(const char *message,
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struct pt_regs *regs,
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unsigned long fault_address);
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#endif
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/* Interrupts/Exceptions */
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enum {
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X86_TRAP_DE = 0, /* 0, Divide-by-zero */
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X86_TRAP_DB, /* 1, Debug */
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X86_TRAP_NMI, /* 2, Non-maskable Interrupt */
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X86_TRAP_BP, /* 3, Breakpoint */
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X86_TRAP_OF, /* 4, Overflow */
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X86_TRAP_BR, /* 5, Bound Range Exceeded */
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X86_TRAP_UD, /* 6, Invalid Opcode */
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X86_TRAP_NM, /* 7, Device Not Available */
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X86_TRAP_DF, /* 8, Double Fault */
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X86_TRAP_OLD_MF, /* 9, Coprocessor Segment Overrun */
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X86_TRAP_TS, /* 10, Invalid TSS */
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X86_TRAP_NP, /* 11, Segment Not Present */
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X86_TRAP_SS, /* 12, Stack Segment Fault */
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X86_TRAP_GP, /* 13, General Protection Fault */
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X86_TRAP_PF, /* 14, Page Fault */
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X86_TRAP_SPURIOUS, /* 15, Spurious Interrupt */
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X86_TRAP_MF, /* 16, x87 Floating-Point Exception */
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X86_TRAP_AC, /* 17, Alignment Check */
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X86_TRAP_MC, /* 18, Machine Check */
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X86_TRAP_XF, /* 19, SIMD Floating-Point Exception */
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X86_TRAP_IRET = 32, /* 32, IRET Exception */
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};
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/*
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* Page fault error code bits:
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*
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* bit 0 == 0: no page found 1: protection fault
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* bit 1 == 0: read access 1: write access
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* bit 2 == 0: kernel-mode access 1: user-mode access
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* bit 3 == 1: use of reserved bit detected
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* bit 4 == 1: fault was an instruction fetch
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* bit 5 == 1: protection keys block access
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*/
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enum x86_pf_error_code {
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X86_PF_PROT = 1 << 0,
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X86_PF_WRITE = 1 << 1,
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X86_PF_USER = 1 << 2,
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X86_PF_RSVD = 1 << 3,
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X86_PF_INSTR = 1 << 4,
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X86_PF_PK = 1 << 5,
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};
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#endif /* _ASM_X86_TRAPS_H */
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