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/* $Id: GVMMR0Internal.h $ */
/** @file
* GVMM - The Global VM Manager, Internal header.
*/
/*
* Copyright (C) 2007-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#ifndef VMM_INCLUDED_SRC_VMMR0_GVMMR0Internal_h
#define VMM_INCLUDED_SRC_VMMR0_GVMMR0Internal_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/mem.h>
#include <iprt/timer.h>
/**
* The GVMM per VM data.
*/
typedef struct GVMMPERVCPU
{
/** The time the halted EMT thread expires.
* 0 if the EMT thread is blocked here. */
uint64_t volatile u64HaltExpire;
/** The event semaphore the EMT thread is blocking on. */
RTSEMEVENTMULTI HaltEventMulti;
/** High resolution wake-up timer, NIL_RTTIMER if not used. */
PRTTIMER hHrWakeUpTimer;
/** The ID of the CPU we ran on when halting (debug only). */
RTCPUID idHaltedOnCpu;
/** Set if hHrWakeUpTimer is armed. */
bool volatile fHrWakeUptimerArmed;
uint8_t abPadding[1];
/** The EMT hash table index for this VCpu. */
uint16_t idxEmtHash;
/** The ring-3 mapping of the VMCPU structure. */
RTR0MEMOBJ VMCpuMapObj;
/** Statistics. */
GVMMSTATSVMCPU Stats;
} GVMMPERVCPU;
/** Pointer to the GVMM per VCPU data. */
typedef GVMMPERVCPU *PGVMMPERVCPU;
/**
* EMT hash table entry.
*/
typedef struct GVMMEMTHASHENTRY
{
/** The key. */
RTNATIVETHREAD hNativeEmt;
/** The VCpu index. */
VMCPUID idVCpu;
#if HC_ARCH_BITS == 64
uint32_t u32Padding;
#endif
} GVMMEMTHASHENTRY;
AssertCompileSize(GVMMEMTHASHENTRY, sizeof(void *) * 2);
/** The EMT hash table size. */
#define GVMM_EMT_HASH_SIZE (VMM_MAX_CPU_COUNT * 4)
/** Primary EMT hash table hash function, sans range limit.
* @note We assume the native ring-0 thread handle is a pointer to a pretty big
* structure of at least 1 KiB.
* - NT AMD64 6.0 ETHREAD: 0x450. See
* https://www.geoffchappell.com/studies/windows/km/ntoskrnl/inc/ntos/ps/ethread/index.htm
* for more details.
* - Solaris kthread_t is at least 0x370 in Solaris 10.
* - Linux task_struct looks pretty big too.
* - As does struct thread in xnu.
* @todo Make platform specific adjustment as needed. */
#define GVMM_EMT_HASH_CORE(a_hNativeSelf) ( (uintptr_t)(a_hNativeSelf) >> 10 )
/** Primary EMT hash table function. */
#define GVMM_EMT_HASH_1(a_hNativeSelf) ( GVMM_EMT_HASH_CORE(a_hNativeSelf) % GVMM_EMT_HASH_SIZE )
/** Secondary EMT hash table function, added to the primary one on collision.
* This uses the bits above the primary hash.
* @note It is always odd, which guarantees that we'll visit all hash table
* entries in case of a collision. */
#define GVMM_EMT_HASH_2(a_hNativeSelf) ( ((GVMM_EMT_HASH_CORE(a_hNativeSelf) / GVMM_EMT_HASH_SIZE) | 1) % GVMM_EMT_HASH_SIZE )
/**
* The GVMM per VM data.
*/
typedef struct GVMMPERVM
{
/** The shared VM data structure allocation object (PVMR0). */
RTR0MEMOBJ VMMemObj;
/** The Ring-3 mapping of the shared VM data structure (PVMR3). */
RTR0MEMOBJ VMMapObj;
/** The allocation object for the VM pages. */
RTR0MEMOBJ VMPagesMemObj;
/** The ring-3 mapping of the VM pages. */
RTR0MEMOBJ VMPagesMapObj;
/** The scheduler statistics. */
GVMMSTATSSCHED StatsSched;
/** Whether the per-VM ring-0 initialization has been performed. */
bool fDoneVMMR0Init;
/** Whether the per-VM ring-0 termination is being or has been performed. */
bool fDoneVMMR0Term;
bool afPadding[6];
/** Worker thread registrations. */
struct
{
/** The native ring-0 thread handle. */
RTNATIVETHREAD hNativeThread;
/** The native ring-3 thread handle. */
RTNATIVETHREAD hNativeThreadR3;
} aWorkerThreads[GVMMWORKERTHREAD_END];
/** EMT lookup hash table. */
GVMMEMTHASHENTRY aEmtHash[GVMM_EMT_HASH_SIZE];
} GVMMPERVM;
/** Pointer to the GVMM per VM data. */
typedef GVMMPERVM *PGVMMPERVM;
#endif /* !VMM_INCLUDED_SRC_VMMR0_GVMMR0Internal_h */
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