22 lines
670 B
C
22 lines
670 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_SPECCTRL_H_
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#define _ASM_X86_SPECCTRL_H_
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#include <asm/nospec-branch.h>
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/*
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* On VMENTER we must preserve whatever view of the SPEC_CTRL MSR
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* the guest has, while on VMEXIT we restore the host view. This
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* would be easier if SPEC_CTRL were architecturally maskable or
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* shadowable for guests but this is not (currently) the case.
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* Takes the guest view of SPEC_CTRL MSR as a parameter.
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*/
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extern void x86_spec_ctrl_set_guest(u64);
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extern void x86_spec_ctrl_restore_host(u64);
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/* AMD specific Speculative Store Bypass MSR data */
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extern u64 x86_amd_ls_cfg_base;
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extern u64 x86_amd_ls_cfg_rds_mask;
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#endif
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