VMMRCTestReadMsrs(PVM pVM, uint32_t uMsr, uint32_t cMsrs, PVMMTESTMSRENTRY paResults)
{
AssertReturn(cMsrs <= 16384, VERR_INVALID_PARAMETER);
AssertPtrReturn(paResults, VERR_INVALID_POINTER);
ASMIntEnable(); /* Run with interrupts enabled, so we can query more MSRs in one block. */
for (uint32_t i = 0; i < cMsrs; i++, uMsr++)
{
if (vmmRCSafeMsrRead(uMsr, &paResults[i].uValue))
paResults[i].uMsr = uMsr;
else
paResults[i].uMsr = UINT64_MAX;
}
ASMIntDisable();
return VINF_SUCCESS;
}
/**
* The GC entry point.
*
* @returns VBox status code.
* @param pVM The VM to operate on.
* @param uOperation Which operation to execute (VMMGCOPERATION).
* @param uArg Argument to that operation.
*/
VMMRCDECL(int) VMMGCEntry(PVM pVM, unsigned uOperation, unsigned uArg, ...)
{
/* todo */
switch (uOperation)
{
/*
* Init RC modules.
*/
case VMMGC_DO_VMMGC_INIT:
{
/*
* Validate the svn revision (uArg).
*/
if (uArg != VMMGetSvnRev())
return VERR_VMM_RC_VERSION_MISMATCH;
/*
* Initialize the runtime.
* (The program timestamp is found in the elipsis.)
*/
va_list va;
va_start(va, uArg);
uint64_t u64TS = va_arg(va, uint64_t);
va_end(va);
int rc = RTRCInit(u64TS);
Log(("VMMGCEntry: VMMGC_DO_VMMGC_INIT - uArg=%u (svn revision) u64TS=%RX64; rc=%Rrc\n", uArg, u64TS, rc));
AssertRCReturn(rc, rc);
rc = PGMRegisterStringFormatTypes();
AssertRCReturn(rc, rc);
rc = PGMRCDynMapInit(pVM);
AssertRCReturn(rc, rc);
return VINF_SUCCESS;
}
/*
* Testcase which is used to test interrupt forwarding.
* It spins for a while with interrupts enabled.
*/
case VMMGC_DO_TESTCASE_HYPER_INTERRUPT:
{
uint32_t volatile i = 0;
ASMIntEnable();
while (i < _2G32)
i++;
ASMIntDisable();
return 0;
}
/*
* Testcase which simply returns, this is used for
* profiling of the switcher.
*/
case VMMGC_DO_TESTCASE_NOP:
return 0;
/*
* Testcase executes a privileged instruction to force a world switch. (in both SVM & VMX)
*/
case VMMGC_DO_TESTCASE_HWACCM_NOP:
ASMRdMsr_Low(MSR_IA32_SYSENTER_CS);
return 0;
/*
* Delay for ~100us.
*/
case VMMGC_DO_TESTCASE_INTERRUPT_MASKING:
{
uint64_t u64MaxTicks = (SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) != ~(uint64_t)0
? SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage)
: _2G)
/ 10000;
uint64_t u64StartTSC = ASMReadTSC();
uint64_t u64TicksNow;
uint32_t volatile i = 0;
do
{
/* waste some time and protect against getting stuck. */
for (uint32_t volatile j = 0; j < 1000; j++, i++)
if (i > _2G32)
return VERR_GENERAL_FAILURE;
/* check if we're done.*/
u64TicksNow = ASMReadTSC() - u64StartTSC;
} while (u64TicksNow < u64MaxTicks);
return VINF_SUCCESS;
}
/*
* Trap testcases and unknown operations.
*/
default:
if ( uOperation >= VMMGC_DO_TESTCASE_TRAP_FIRST
&& uOperation < VMMGC_DO_TESTCASE_TRAP_LAST)
return vmmGCTest(pVM, uOperation, uArg);
return VERR_INVALID_PARAMETER;
}
}
