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WHPX: dynamically load WHP libraries

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We're currently linking against import libraries of the WHP DLLs.

By dynamically loading the libraries, we ensure that QEMU will work
on previous Windows versions, where the WHP DLLs will be missing
(assuming that WHP is not requested).

Also, we're simplifying the build process, as we no longer require
the import libraries.

Signed-off-by: Alessandro Pilotti <apilotti@cloudbasesolutions.com>
Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
Signed-off-by: Lucian Petrut <lpetrut@cloudbasesolutions.com>
Message-Id: <1526405722-10887-2-git-send-email-lpetrut@cloudbasesolutions.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Lucian Petrut 2018-05-15 20:35:21 +03:00 committed by Paolo Bonzini
parent 8347c18506
commit 327fccb288
2 changed files with 145 additions and 82 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
configure vendored
View File

@ -2524,20 +2524,7 @@ fi
##########################################
# Windows Hypervisor Platform accelerator (WHPX) check
if test "$whpx" != "no" ; then
cat > $TMPC << EOF
#include <windows.h>
#include <WinHvPlatform.h>
#include <WinHvEmulation.h>
int main(void) {
WHV_CAPABILITY whpx_cap;
UINT32 writtenSize;
WHvGetCapability(WHvCapabilityCodeFeatures, &whpx_cap, sizeof(whpx_cap),
&writtenSize);
return 0;
}
EOF
if compile_prog "" "-lWinHvPlatform -lWinHvEmulation" ; then
libs_softmmu="$libs_softmmu -lWinHvPlatform -lWinHvEmulation"
if check_include "WinHvPlatform.h" && check_include "WinHvEmulation.h"; then
whpx="yes"
else
if test "$whpx" = "yes"; then

212
target/i386/whpx-all.c
View File

@ -24,6 +24,7 @@
#include "qemu/queue.h"
#include "qapi/error.h"
#include "migration/blocker.h"
#include "whp-dispatch.h"
#include <WinHvPlatform.h>
#include <WinHvEmulation.h>
@ -159,8 +160,11 @@ struct whpx_vcpu {
};
static bool whpx_allowed;
static bool whp_dispatch_initialized;
static HMODULE hWinHvPlatform, hWinHvEmulation;
struct whpx_state whpx_global;
struct WHPDispatch whp_dispatch;
/*
@ -354,10 +358,11 @@ static void whpx_set_registers(CPUState *cpu)
assert(idx == RTL_NUMBER_OF(whpx_register_names));
hr = WHvSetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
whpx_register_names,
RTL_NUMBER_OF(whpx_register_names),
&vcxt.values[0]);
hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
whpx->partition, cpu->cpu_index,
whpx_register_names,
RTL_NUMBER_OF(whpx_register_names),
&vcxt.values[0]);
if (FAILED(hr)) {
error_report("WHPX: Failed to set virtual processor context, hr=%08lx",
@ -381,10 +386,11 @@ static void whpx_get_registers(CPUState *cpu)
assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
hr = WHvGetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
whpx_register_names,
RTL_NUMBER_OF(whpx_register_names),
&vcxt.values[0]);
hr = whp_dispatch.WHvGetVirtualProcessorRegisters(
whpx->partition, cpu->cpu_index,
whpx_register_names,
RTL_NUMBER_OF(whpx_register_names),
&vcxt.values[0]);
if (FAILED(hr)) {
error_report("WHPX: Failed to get virtual processor context, hr=%08lx",
hr);
@ -544,9 +550,10 @@ static HRESULT CALLBACK whpx_emu_getreg_callback(
struct whpx_state *whpx = &whpx_global;
CPUState *cpu = (CPUState *)ctx;
hr = WHvGetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
RegisterNames, RegisterCount,
RegisterValues);
hr = whp_dispatch.WHvGetVirtualProcessorRegisters(
whpx->partition, cpu->cpu_index,
RegisterNames, RegisterCount,
RegisterValues);
if (FAILED(hr)) {
error_report("WHPX: Failed to get virtual processor registers,"
" hr=%08lx", hr);
@ -565,9 +572,10 @@ static HRESULT CALLBACK whpx_emu_setreg_callback(
struct whpx_state *whpx = &whpx_global;
CPUState *cpu = (CPUState *)ctx;
hr = WHvSetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
RegisterNames, RegisterCount,
RegisterValues);
hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
whpx->partition, cpu->cpu_index,
RegisterNames, RegisterCount,
RegisterValues);
if (FAILED(hr)) {
error_report("WHPX: Failed to set virtual processor registers,"
" hr=%08lx", hr);
@ -594,8 +602,8 @@ static HRESULT CALLBACK whpx_emu_translate_callback(
CPUState *cpu = (CPUState *)ctx;
WHV_TRANSLATE_GVA_RESULT res;
hr = WHvTranslateGva(whpx->partition, cpu->cpu_index,
Gva, TranslateFlags, &res, Gpa);
hr = whp_dispatch.WHvTranslateGva(whpx->partition, cpu->cpu_index,
Gva, TranslateFlags, &res, Gpa);
if (FAILED(hr)) {
error_report("WHPX: Failed to translate GVA, hr=%08lx", hr);
} else {
@ -620,16 +628,18 @@ static int whpx_handle_mmio(CPUState *cpu, WHV_MEMORY_ACCESS_CONTEXT *ctx)
struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
WHV_EMULATOR_STATUS emu_status;
hr = WHvEmulatorTryMmioEmulation(vcpu->emulator, cpu,
&vcpu->exit_ctx.VpContext, ctx,
&emu_status);
hr = whp_dispatch.WHvEmulatorTryMmioEmulation(
vcpu->emulator, cpu,
&vcpu->exit_ctx.VpContext, ctx,
&emu_status);
if (FAILED(hr)) {
error_report("WHPX: Failed to parse MMIO access, hr=%08lx", hr);
return -1;
}
if (!emu_status.EmulationSuccessful) {
error_report("WHPX: Failed to emulate MMIO access");
error_report("WHPX: Failed to emulate MMIO access with"
" EmulatorReturnStatus: %u", emu_status.AsUINT32);
return -1;
}
@ -643,16 +653,18 @@ static int whpx_handle_portio(CPUState *cpu,
struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
WHV_EMULATOR_STATUS emu_status;
hr = WHvEmulatorTryIoEmulation(vcpu->emulator, cpu,
&vcpu->exit_ctx.VpContext, ctx,
&emu_status);
hr = whp_dispatch.WHvEmulatorTryIoEmulation(
vcpu->emulator, cpu,
&vcpu->exit_ctx.VpContext, ctx,
&emu_status);
if (FAILED(hr)) {
error_report("WHPX: Failed to parse PortIO access, hr=%08lx", hr);
return -1;
}
if (!emu_status.EmulationSuccessful) {
error_report("WHPX: Failed to emulate PortMMIO access");
error_report("WHPX: Failed to emulate PortIO access with"
" EmulatorReturnStatus: %u", emu_status.AsUINT32);
return -1;
}
@ -767,8 +779,9 @@ static void whpx_vcpu_pre_run(CPUState *cpu)
qemu_mutex_unlock_iothread();
if (reg_count) {
hr = WHvSetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
reg_names, reg_count, reg_values);
hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
whpx->partition, cpu->cpu_index,
reg_names, reg_count, reg_values);
if (FAILED(hr)) {
error_report("WHPX: Failed to set interrupt state registers,"
" hr=%08lx", hr);
@ -876,8 +889,9 @@ static int whpx_vcpu_run(CPUState *cpu)
whpx_vcpu_kick(cpu);
}
hr = WHvRunVirtualProcessor(whpx->partition, cpu->cpu_index,
&vcpu->exit_ctx, sizeof(vcpu->exit_ctx));
hr = whp_dispatch.WHvRunVirtualProcessor(
whpx->partition, cpu->cpu_index,
&vcpu->exit_ctx, sizeof(vcpu->exit_ctx));
if (FAILED(hr)) {
error_report("WHPX: Failed to exec a virtual processor,"
@ -948,11 +962,11 @@ static int whpx_vcpu_run(CPUState *cpu)
reg_values[3].Reg64 = rdx;
reg_values[4].Reg64 = rbx;
hr = WHvSetVirtualProcessorRegisters(whpx->partition,
cpu->cpu_index,
reg_names,
reg_count,
reg_values);
hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
whpx->partition, cpu->cpu_index,
reg_names,
reg_count,
reg_values);
if (FAILED(hr)) {
error_report("WHPX: Failed to set CpuidAccess state registers,"
@ -1064,8 +1078,8 @@ int whpx_init_vcpu(CPUState *cpu)
(void)migrate_add_blocker(whpx_migration_blocker, &local_error);
if (local_error) {
error_report_err(local_error);
error_free(whpx_migration_blocker);
migrate_del_blocker(whpx_migration_blocker);
error_free(whpx_migration_blocker);
return -EINVAL;
}
}
@ -1077,7 +1091,9 @@ int whpx_init_vcpu(CPUState *cpu)
return -ENOMEM;
}
hr = WHvEmulatorCreateEmulator(&whpx_emu_callbacks, &vcpu->emulator);
hr = whp_dispatch.WHvEmulatorCreateEmulator(
&whpx_emu_callbacks,
&vcpu->emulator);
if (FAILED(hr)) {
error_report("WHPX: Failed to setup instruction completion support,"
" hr=%08lx", hr);
@ -1085,11 +1101,12 @@ int whpx_init_vcpu(CPUState *cpu)
return -EINVAL;
}
hr = WHvCreateVirtualProcessor(whpx->partition, cpu->cpu_index, 0);
hr = whp_dispatch.WHvCreateVirtualProcessor(
whpx->partition, cpu->cpu_index, 0);
if (FAILED(hr)) {
error_report("WHPX: Failed to create a virtual processor,"
" hr=%08lx", hr);
WHvEmulatorDestroyEmulator(vcpu->emulator);
whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator);
g_free(vcpu);
return -EINVAL;
}
@ -1130,8 +1147,8 @@ void whpx_destroy_vcpu(CPUState *cpu)
struct whpx_state *whpx = &whpx_global;
struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
WHvDeleteVirtualProcessor(whpx->partition, cpu->cpu_index);
WHvEmulatorDestroyEmulator(vcpu->emulator);
whp_dispatch.WHvDeleteVirtualProcessor(whpx->partition, cpu->cpu_index);
whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator);
g_free(cpu->hax_vcpu);
return;
}
@ -1139,7 +1156,8 @@ void whpx_destroy_vcpu(CPUState *cpu)
void whpx_vcpu_kick(CPUState *cpu)
{
struct whpx_state *whpx = &whpx_global;
WHvCancelRunVirtualProcessor(whpx->partition, cpu->cpu_index, 0);
whp_dispatch.WHvCancelRunVirtualProcessor(
whpx->partition, cpu->cpu_index, 0);
}
/*
@ -1165,17 +1183,17 @@ static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size,
*/
if (add) {
hr = WHvMapGpaRange(whpx->partition,
host_va,
start_pa,
size,
(WHvMapGpaRangeFlagRead |
WHvMapGpaRangeFlagExecute |
(rom ? 0 : WHvMapGpaRangeFlagWrite)));
hr = whp_dispatch.WHvMapGpaRange(whpx->partition,
host_va,
start_pa,
size,
(WHvMapGpaRangeFlagRead |
WHvMapGpaRangeFlagExecute |
(rom ? 0 : WHvMapGpaRangeFlagWrite)));
} else {
hr = WHvUnmapGpaRange(whpx->partition,
start_pa,
size);
hr = whp_dispatch.WHvUnmapGpaRange(whpx->partition,
start_pa,
size);
}
if (FAILED(hr)) {
@ -1289,18 +1307,24 @@ static int whpx_accel_init(MachineState *ms)
whpx = &whpx_global;
if (!init_whp_dispatch()) {
ret = -ENOSYS;
goto error;
}
memset(whpx, 0, sizeof(struct whpx_state));
whpx->mem_quota = ms->ram_size;
hr = WHvGetCapability(WHvCapabilityCodeHypervisorPresent, &whpx_cap,
sizeof(whpx_cap), &whpx_cap_size);
hr = whp_dispatch.WHvGetCapability(
WHvCapabilityCodeHypervisorPresent, &whpx_cap,
sizeof(whpx_cap), &whpx_cap_size);
if (FAILED(hr) || !whpx_cap.HypervisorPresent) {
error_report("WHPX: No accelerator found, hr=%08lx", hr);
ret = -ENOSPC;
goto error;
}
hr = WHvCreatePartition(&whpx->partition);
hr = whp_dispatch.WHvCreatePartition(&whpx->partition);
if (FAILED(hr)) {
error_report("WHPX: Failed to create partition, hr=%08lx", hr);
ret = -EINVAL;
@ -1309,10 +1333,11 @@ static int whpx_accel_init(MachineState *ms)
memset(&prop, 0, sizeof(WHV_PARTITION_PROPERTY));
prop.ProcessorCount = smp_cpus;
hr = WHvSetPartitionProperty(whpx->partition,
WHvPartitionPropertyCodeProcessorCount,
&prop,
sizeof(WHV_PARTITION_PROPERTY));
hr = whp_dispatch.WHvSetPartitionProperty(
whpx->partition,
WHvPartitionPropertyCodeProcessorCount,
&prop,
sizeof(WHV_PARTITION_PROPERTY));
if (FAILED(hr)) {
error_report("WHPX: Failed to set partition core count to %d,"
@ -1323,10 +1348,11 @@ static int whpx_accel_init(MachineState *ms)
memset(&prop, 0, sizeof(WHV_PARTITION_PROPERTY));
prop.ExtendedVmExits.X64CpuidExit = 1;
hr = WHvSetPartitionProperty(whpx->partition,
WHvPartitionPropertyCodeExtendedVmExits,
&prop,
sizeof(WHV_PARTITION_PROPERTY));
hr = whp_dispatch.WHvSetPartitionProperty(
whpx->partition,
WHvPartitionPropertyCodeExtendedVmExits,
&prop,
sizeof(WHV_PARTITION_PROPERTY));
if (FAILED(hr)) {
error_report("WHPX: Failed to enable partition extended X64CpuidExit"
@ -1336,11 +1362,11 @@ static int whpx_accel_init(MachineState *ms)
}
UINT32 cpuidExitList[] = {1};
hr = WHvSetPartitionProperty(whpx->partition,
WHvPartitionPropertyCodeCpuidExitList,
cpuidExitList,
RTL_NUMBER_OF(cpuidExitList) * sizeof(UINT32));
hr = whp_dispatch.WHvSetPartitionProperty(
whpx->partition,
WHvPartitionPropertyCodeCpuidExitList,
cpuidExitList,
RTL_NUMBER_OF(cpuidExitList) * sizeof(UINT32));
if (FAILED(hr)) {
error_report("WHPX: Failed to set partition CpuidExitList hr=%08lx",
hr);
@ -1348,7 +1374,7 @@ static int whpx_accel_init(MachineState *ms)
goto error;
}
hr = WHvSetupPartition(whpx->partition);
hr = whp_dispatch.WHvSetupPartition(whpx->partition);
if (FAILED(hr)) {
error_report("WHPX: Failed to setup partition, hr=%08lx", hr);
ret = -EINVAL;
@ -1365,7 +1391,7 @@ static int whpx_accel_init(MachineState *ms)
error:
if (NULL != whpx->partition) {
WHvDeletePartition(whpx->partition);
whp_dispatch.WHvDeletePartition(whpx->partition);
whpx->partition = NULL;
}
@ -1397,4 +1423,54 @@ static void whpx_type_init(void)
type_register_static(&whpx_accel_type);
}
bool init_whp_dispatch(void)
{
const char *lib_name;
HMODULE hLib;
if (whp_dispatch_initialized) {
return true;
}
#define WHP_LOAD_FIELD(return_type, function_name, signature) \
whp_dispatch.function_name = \
(function_name ## _t)GetProcAddress(hLib, #function_name); \
if (!whp_dispatch.function_name) { \
error_report("Could not load function %s from library %s.", \
#function_name, lib_name); \
goto error; \
} \
lib_name = "WinHvPlatform.dll";
hWinHvPlatform = LoadLibrary(lib_name);
if (!hWinHvPlatform) {
error_report("Could not load library %s.", lib_name);
goto error;
}
hLib = hWinHvPlatform;
LIST_WINHVPLATFORM_FUNCTIONS(WHP_LOAD_FIELD)
lib_name = "WinHvEmulation.dll";
hWinHvEmulation = LoadLibrary(lib_name);
if (!hWinHvEmulation) {
error_report("Could not load library %s.", lib_name);
goto error;
}
hLib = hWinHvEmulation;
LIST_WINHVEMULATION_FUNCTIONS(WHP_LOAD_FIELD)
whp_dispatch_initialized = true;
return true;
error:
if (hWinHvPlatform) {
FreeLibrary(hWinHvPlatform);
}
if (hWinHvEmulation) {
FreeLibrary(hWinHvEmulation);
}
return false;
}
type_init(whpx_type_init);