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KVM: x86: Move KVM's arbitrary task switch reason enums to x86.h

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Relocate KVM's TASK_SWITCH_<reason> enums from kvm_host.h to x86.h, as the
enums are arbitrary values, i.e. not architectural, and are intended to be
used only to translate vendor specific information to a common x86 reason
when invoking kvm_task_switch().

Opportunistically name the overall enum to help document the role of the
values.

No functional change intended.

Reviewed-by: Kai Huang <kai.huang@intel.com>
Link: https://patch.msgid.link/20260625220450.3354415-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson 2026-06-25 15:04:48 -07:00
parent de28ef6548
commit 0bc5f998e1
2 changed files with 6 additions and 7 deletions
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7
arch/x86/include/asm/kvm_host.h
View File

@ -1960,13 +1960,6 @@ static inline unsigned long read_msr(unsigned long msr)
}
#endif
enum {
TASK_SWITCH_CALL = 0,
TASK_SWITCH_IRET = 1,
TASK_SWITCH_JMP = 2,
TASK_SWITCH_GATE = 3,
};
#define HF_GUEST_MASK (1 << 0) /* VCPU is in guest-mode */
#ifdef CONFIG_KVM_SMM

6
arch/x86/kvm/x86.h
View File

@ -482,6 +482,12 @@ int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
enum kvm_task_switch_reason {
TASK_SWITCH_CALL = 0,
TASK_SWITCH_IRET = 1,
TASK_SWITCH_JMP = 2,
TASK_SWITCH_GATE = 3,
};
int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
int reason, bool has_error_code, u32 error_code);