34 lines
961 B
C
34 lines
961 B
C
/*
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* arch/e2k/include/asm/kvm/ctx_signal_stacks.h
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*
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* This file contains interfaces for managing of separate signal stacks
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* for guest's contexts
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*
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* Copyright 2022 Andrey Alekhin (Andrey.I.Alekhin@mcst.ru)
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*/
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#ifndef CTX_SIGNAL_STACKS
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#define CTX_SIGNAL_STACKS
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#include <linux/rhashtable-types.h>
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#include <asm/thread_info.h>
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enum {
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CTX_STACK_READY = 0U, /* Stack is free to take */
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CTX_STACK_BUSY = 1U, /* Stack is currently busy by thread */
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CTX_STACK_COPYING = 2U /* Stack is being copied in fork() */
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};
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struct rhashtable *alloc_gst_ctx_sig_stacks_ht(void);
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void free_gst_ctx_sig_stacks_ht(struct rhashtable *ht);
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struct rhashtable *copy_gst_ctx_sig_stacks_ht(void);
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int add_gst_ctx_signal_stack(struct rhashtable *ht,
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struct signal_stack *signal_stack,
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u64 key, int state);
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void remove_gst_ctx_signal_stack(u64 key);
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int switch_gst_ctx_signal_stack(u64 to_key);
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int update_curr_gst_signal_stack(void);
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#endif /* CTX_SIGNAL_STACKS */
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