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991625f3dd
The bits required to make the hardware go.. Of note is that, provided the syscall entry points are covered with ENDBR, #CP doesn't need to be an IST because we'll never hit the syscall gap. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20220308154318.582331711@infradead.org
50 lines
1.3 KiB
C
50 lines
1.3 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/idtentry.h>
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#include <asm/siginfo.h> /* TRAP_TRACE, ... */
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#include <asm/trap_pf.h>
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#ifdef CONFIG_X86_64
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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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asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *eregs);
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#endif
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extern bool ibt_selftest(void);
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#ifdef CONFIG_X86_F00F_BUG
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/* For handling the FOOF bug */
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void handle_invalid_op(struct pt_regs *regs);
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#endif
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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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bool fault_in_kernel_space(unsigned long address);
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#ifdef CONFIG_VMAP_STACK
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void __noreturn handle_stack_overflow(struct pt_regs *regs,
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unsigned long fault_address,
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struct stack_info *info);
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#endif
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#endif /* _ASM_X86_TRAPS_H */
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