arch/x86/kvm/vmx/vmcs.h

Source file repositories/reference/linux-study-clean/arch/x86/kvm/vmx/vmcs.h

File Facts

System
Linux kernel
Corpus path
arch/x86/kvm/vmx/vmcs.h
Extension
.h
Size
4906 bytes
Lines
197
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct vmcs_host_state {
	unsigned long cr3;	/* May not match real cr3 */
	unsigned long cr4;	/* May not match real cr4 */
	unsigned long gs_base;
	unsigned long fs_base;
	unsigned long rsp;

	u16           fs_sel, gs_sel, ldt_sel;
#ifdef CONFIG_X86_64
	u16           ds_sel, es_sel;
#endif
};

struct vmcs_controls_shadow {
	u32 vm_entry;
	u32 vm_exit;
	u32 pin;
	u32 exec;
	u32 secondary_exec;
	u64 tertiary_exec;
};

/*
 * Track a VMCS that may be loaded on a certain CPU. If it is (cpu!=-1), also
 * remember whether it was VMLAUNCHed, and maintain a linked list of all VMCSs
 * loaded on this CPU (so we can clear them if the CPU goes down).
 */
struct loaded_vmcs {
	struct vmcs *vmcs;
	struct vmcs *shadow_vmcs;
	int cpu;
	bool launched;
	bool nmi_known_unmasked;
	bool hv_timer_soft_disabled;
	/* Support for vnmi-less CPUs */
	int soft_vnmi_blocked;
	ktime_t entry_time;
	s64 vnmi_blocked_time;
	unsigned long *msr_bitmap;
	struct list_head loaded_vmcss_on_cpu_link;
	struct vmcs_host_state host_state;
	struct vmcs_controls_shadow controls_shadow;
};

static __always_inline bool is_intr_type(u32 intr_info, u32 type)
{
	const u32 mask = INTR_INFO_VALID_MASK | INTR_INFO_INTR_TYPE_MASK;

	return (intr_info & mask) == (INTR_INFO_VALID_MASK | type);
}

static inline bool is_intr_type_n(u32 intr_info, u32 type, u8 vector)
{
	const u32 mask = INTR_INFO_VALID_MASK | INTR_INFO_INTR_TYPE_MASK |
			 INTR_INFO_VECTOR_MASK;

	return (intr_info & mask) == (INTR_INFO_VALID_MASK | type | vector);
}

static inline bool is_exception_n(u32 intr_info, u8 vector)
{
	return is_intr_type_n(intr_info, INTR_TYPE_HARD_EXCEPTION, vector);
}

static inline bool is_debug(u32 intr_info)
{
	return is_exception_n(intr_info, DB_VECTOR);
}

static inline bool is_breakpoint(u32 intr_info)
{
	return is_exception_n(intr_info, BP_VECTOR);
}

static inline bool is_double_fault(u32 intr_info)
{
	return is_exception_n(intr_info, DF_VECTOR);
}

static inline bool is_page_fault(u32 intr_info)
{
	return is_exception_n(intr_info, PF_VECTOR);
}

static inline bool is_invalid_opcode(u32 intr_info)
{
	return is_exception_n(intr_info, UD_VECTOR);
}

static inline bool is_gp_fault(u32 intr_info)

Annotation

Implementation Notes