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9eece49856
The io_delay() paravirt hook is in no way performance critical and all users setting it to a different function than native_io_delay() are using an empty function as replacement. Allow replacing the hook with a bool indicating whether native_io_delay() should be called. [ bp: Massage commit message. ] Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://patch.msgid.link/20260119182632.596369-3-jgross@suse.com
42 lines
861 B
C
42 lines
861 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _ASM_X86_PARAVIRT_BASE_H
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#define _ASM_X86_PARAVIRT_BASE_H
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/*
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* Wrapper type for pointers to code which uses the non-standard
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* calling convention. See PV_CALL_SAVE_REGS_THUNK below.
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*/
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struct paravirt_callee_save {
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void *func;
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};
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struct pv_info {
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#ifdef CONFIG_PARAVIRT_XXL
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u16 extra_user_64bit_cs; /* __USER_CS if none */
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#endif
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bool io_delay;
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const char *name;
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};
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void default_banner(void);
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extern struct pv_info pv_info;
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unsigned long paravirt_ret0(void);
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#ifdef CONFIG_PARAVIRT_XXL
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u64 _paravirt_ident_64(u64);
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#endif
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#define paravirt_nop ((void *)nop_func)
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#ifdef CONFIG_PARAVIRT
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#define call_io_delay() pv_info.io_delay
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#endif
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#ifdef CONFIG_PARAVIRT_SPINLOCKS
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void paravirt_set_cap(void);
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#else
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static inline void paravirt_set_cap(void) { }
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#endif
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#endif /* _ASM_X86_PARAVIRT_BASE_H */
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