Vpid.c File Reference

VPID Implementations. More...

#include "pch.h"

Functions
_Use_decl_annotations_ VOID	VpidInvvpid (INVVPID_TYPE Type, INVVPID_DESCRIPTOR *Descriptor)
	INVVPID Instruction.
_Use_decl_annotations_ VOID	VpidInvvpidIndividualAddress (UINT16 Vpid, UINT64 LinearAddress)
	INVVPID instruction to invalidate a special address.
VOID	VpidInvvpidSingleContext (UINT16 Vpid)
	INVVPID Single Context.
VOID	VpidInvvpidAllContext ()
	INVVPID All Contexts.
VOID	VpidInvvpidSingleContextRetainingGlobals (UINT16 Vpid)
	INVVPID Single Context Retaining Globals.

Detailed Description

VPID Implementations.

Author

Sina Karvandi (sina@.nosp@m.hype.nosp@m.rdbg..nosp@m.org)

Version

0.1

Date

2020-04-11

Copyright

This project is released under the GNU Public License v3.

Function Documentation

VpidInvvpid()

_Use_decl_annotations_ VOID VpidInvvpid	(	INVVPID_TYPE	Type,
		INVVPID_DESCRIPTOR *	Descriptor )

INVVPID Instruction.

Parameters

Type
Descriptor

Returns

VOID

{
    INVVPID_DESCRIPTOR * TargetDescriptor = NULL;
    INVVPID_DESCRIPTOR   ZeroDescriptor   = {0};
 
    // No need to do anything if VPID is not supported.
    if (!g_IsVpidSupported)
    {
        return;
    }
 
    if (!Descriptor)
    {
        TargetDescriptor = &ZeroDescriptor;
    }
    else
    {
        TargetDescriptor = Descriptor;
    }
 
    AsmInvvpid(Type, TargetDescriptor);
}

VpidInvvpidAllContext()

VOID VpidInvvpidAllContext

(

)

INVVPID All Contexts.

Returns

VOID

{
    VpidInvvpid(InvvpidAllContext, NULL);
}

VpidInvvpidIndividualAddress()

_Use_decl_annotations_ VOID VpidInvvpidIndividualAddress	(	UINT16	Vpid,
		UINT64	LinearAddress )

INVVPID instruction to invalidate a special address.

Parameters

Vpid
LinearAddress

Returns

VOID

{
    INVVPID_DESCRIPTOR Descriptor = {Vpid, 0, 0, LinearAddress};
    VpidInvvpid(InvvpidIndividualAddress, &Descriptor);
}

VpidInvvpidSingleContext()

VOID VpidInvvpidSingleContext

(

UINT16

Vpid

)

INVVPID Single Context.

Parameters

Vpid

Returns

VOID

{
    INVVPID_DESCRIPTOR Descriptor = {Vpid, 0, 0, 0};
    VpidInvvpid(InvvpidSingleContext, &Descriptor);
}

VpidInvvpidSingleContextRetainingGlobals()

VOID VpidInvvpidSingleContextRetainingGlobals

(

UINT16

Vpid

)

INVVPID Single Context Retaining Globals.

Parameters

Vpid

Returns

VOID

{
    INVVPID_DESCRIPTOR Descriptor = {Vpid, 0, 0, 0};
    VpidInvvpid(InvvpidSingleContextRetainingGlobals, &Descriptor);
}