WHPX: dynamically load WHP libraries
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
Paolo Bonzini
parent
8347c18506
commit
327fccb288
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@ -2524,20 +2524,7 @@ fi
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##########################################
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# Windows Hypervisor Platform accelerator (WHPX) check
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if test "$whpx" != "no" ; then
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cat > $TMPC << EOF
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#include <windows.h>
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#include <WinHvPlatform.h>
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#include <WinHvEmulation.h>
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int main(void) {
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WHV_CAPABILITY whpx_cap;
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UINT32 writtenSize;
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WHvGetCapability(WHvCapabilityCodeFeatures, &whpx_cap, sizeof(whpx_cap),
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&writtenSize);
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return 0;
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}
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EOF
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if compile_prog "" "-lWinHvPlatform -lWinHvEmulation" ; then
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libs_softmmu="$libs_softmmu -lWinHvPlatform -lWinHvEmulation"
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if check_include "WinHvPlatform.h" && check_include "WinHvEmulation.h"; then
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whpx="yes"
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else
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if test "$whpx" = "yes"; then
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@ -24,6 +24,7 @@
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#include "qemu/queue.h"
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#include "qapi/error.h"
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#include "migration/blocker.h"
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#include "whp-dispatch.h"
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#include <WinHvPlatform.h>
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#include <WinHvEmulation.h>
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@ -159,8 +160,11 @@ struct whpx_vcpu {
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};
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static bool whpx_allowed;
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static bool whp_dispatch_initialized;
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static HMODULE hWinHvPlatform, hWinHvEmulation;
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struct whpx_state whpx_global;
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struct WHPDispatch whp_dispatch;
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/*
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@ -354,10 +358,11 @@ static void whpx_set_registers(CPUState *cpu)
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assert(idx == RTL_NUMBER_OF(whpx_register_names));
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hr = WHvSetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
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whpx_register_names,
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RTL_NUMBER_OF(whpx_register_names),
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&vcxt.values[0]);
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hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
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whpx->partition, cpu->cpu_index,
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whpx_register_names,
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RTL_NUMBER_OF(whpx_register_names),
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&vcxt.values[0]);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to set virtual processor context, hr=%08lx",
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@ -381,10 +386,11 @@ static void whpx_get_registers(CPUState *cpu)
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assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
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hr = WHvGetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
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whpx_register_names,
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RTL_NUMBER_OF(whpx_register_names),
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&vcxt.values[0]);
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hr = whp_dispatch.WHvGetVirtualProcessorRegisters(
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whpx->partition, cpu->cpu_index,
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whpx_register_names,
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RTL_NUMBER_OF(whpx_register_names),
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&vcxt.values[0]);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to get virtual processor context, hr=%08lx",
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hr);
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@ -544,9 +550,10 @@ static HRESULT CALLBACK whpx_emu_getreg_callback(
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struct whpx_state *whpx = &whpx_global;
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CPUState *cpu = (CPUState *)ctx;
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hr = WHvGetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
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RegisterNames, RegisterCount,
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RegisterValues);
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hr = whp_dispatch.WHvGetVirtualProcessorRegisters(
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whpx->partition, cpu->cpu_index,
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RegisterNames, RegisterCount,
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RegisterValues);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to get virtual processor registers,"
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" hr=%08lx", hr);
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@ -565,9 +572,10 @@ static HRESULT CALLBACK whpx_emu_setreg_callback(
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struct whpx_state *whpx = &whpx_global;
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CPUState *cpu = (CPUState *)ctx;
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hr = WHvSetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
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RegisterNames, RegisterCount,
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RegisterValues);
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hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
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whpx->partition, cpu->cpu_index,
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RegisterNames, RegisterCount,
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RegisterValues);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to set virtual processor registers,"
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" hr=%08lx", hr);
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@ -594,8 +602,8 @@ static HRESULT CALLBACK whpx_emu_translate_callback(
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CPUState *cpu = (CPUState *)ctx;
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WHV_TRANSLATE_GVA_RESULT res;
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hr = WHvTranslateGva(whpx->partition, cpu->cpu_index,
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Gva, TranslateFlags, &res, Gpa);
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hr = whp_dispatch.WHvTranslateGva(whpx->partition, cpu->cpu_index,
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Gva, TranslateFlags, &res, Gpa);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to translate GVA, hr=%08lx", hr);
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} else {
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@ -620,16 +628,18 @@ static int whpx_handle_mmio(CPUState *cpu, WHV_MEMORY_ACCESS_CONTEXT *ctx)
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struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
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WHV_EMULATOR_STATUS emu_status;
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hr = WHvEmulatorTryMmioEmulation(vcpu->emulator, cpu,
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&vcpu->exit_ctx.VpContext, ctx,
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&emu_status);
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hr = whp_dispatch.WHvEmulatorTryMmioEmulation(
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vcpu->emulator, cpu,
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&vcpu->exit_ctx.VpContext, ctx,
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&emu_status);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to parse MMIO access, hr=%08lx", hr);
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return -1;
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}
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if (!emu_status.EmulationSuccessful) {
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error_report("WHPX: Failed to emulate MMIO access");
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error_report("WHPX: Failed to emulate MMIO access with"
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" EmulatorReturnStatus: %u", emu_status.AsUINT32);
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return -1;
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}
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@ -643,16 +653,18 @@ static int whpx_handle_portio(CPUState *cpu,
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struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
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WHV_EMULATOR_STATUS emu_status;
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hr = WHvEmulatorTryIoEmulation(vcpu->emulator, cpu,
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&vcpu->exit_ctx.VpContext, ctx,
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&emu_status);
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hr = whp_dispatch.WHvEmulatorTryIoEmulation(
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vcpu->emulator, cpu,
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&vcpu->exit_ctx.VpContext, ctx,
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&emu_status);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to parse PortIO access, hr=%08lx", hr);
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return -1;
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}
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if (!emu_status.EmulationSuccessful) {
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error_report("WHPX: Failed to emulate PortMMIO access");
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error_report("WHPX: Failed to emulate PortIO access with"
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" EmulatorReturnStatus: %u", emu_status.AsUINT32);
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return -1;
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}
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@ -767,8 +779,9 @@ static void whpx_vcpu_pre_run(CPUState *cpu)
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qemu_mutex_unlock_iothread();
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if (reg_count) {
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hr = WHvSetVirtualProcessorRegisters(whpx->partition, cpu->cpu_index,
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reg_names, reg_count, reg_values);
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hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
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whpx->partition, cpu->cpu_index,
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reg_names, reg_count, reg_values);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to set interrupt state registers,"
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" hr=%08lx", hr);
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@ -876,8 +889,9 @@ static int whpx_vcpu_run(CPUState *cpu)
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whpx_vcpu_kick(cpu);
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}
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hr = WHvRunVirtualProcessor(whpx->partition, cpu->cpu_index,
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&vcpu->exit_ctx, sizeof(vcpu->exit_ctx));
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hr = whp_dispatch.WHvRunVirtualProcessor(
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whpx->partition, cpu->cpu_index,
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&vcpu->exit_ctx, sizeof(vcpu->exit_ctx));
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if (FAILED(hr)) {
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error_report("WHPX: Failed to exec a virtual processor,"
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@ -948,11 +962,11 @@ static int whpx_vcpu_run(CPUState *cpu)
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reg_values[3].Reg64 = rdx;
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reg_values[4].Reg64 = rbx;
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hr = WHvSetVirtualProcessorRegisters(whpx->partition,
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cpu->cpu_index,
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reg_names,
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reg_count,
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reg_values);
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hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
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whpx->partition, cpu->cpu_index,
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reg_names,
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reg_count,
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reg_values);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to set CpuidAccess state registers,"
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@ -1064,8 +1078,8 @@ int whpx_init_vcpu(CPUState *cpu)
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(void)migrate_add_blocker(whpx_migration_blocker, &local_error);
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if (local_error) {
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error_report_err(local_error);
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error_free(whpx_migration_blocker);
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migrate_del_blocker(whpx_migration_blocker);
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error_free(whpx_migration_blocker);
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return -EINVAL;
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}
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}
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@ -1077,7 +1091,9 @@ int whpx_init_vcpu(CPUState *cpu)
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return -ENOMEM;
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}
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hr = WHvEmulatorCreateEmulator(&whpx_emu_callbacks, &vcpu->emulator);
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hr = whp_dispatch.WHvEmulatorCreateEmulator(
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&whpx_emu_callbacks,
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&vcpu->emulator);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to setup instruction completion support,"
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" hr=%08lx", hr);
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@ -1085,11 +1101,12 @@ int whpx_init_vcpu(CPUState *cpu)
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return -EINVAL;
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}
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hr = WHvCreateVirtualProcessor(whpx->partition, cpu->cpu_index, 0);
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hr = whp_dispatch.WHvCreateVirtualProcessor(
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whpx->partition, cpu->cpu_index, 0);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to create a virtual processor,"
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" hr=%08lx", hr);
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WHvEmulatorDestroyEmulator(vcpu->emulator);
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whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator);
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g_free(vcpu);
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return -EINVAL;
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}
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@ -1130,8 +1147,8 @@ void whpx_destroy_vcpu(CPUState *cpu)
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struct whpx_state *whpx = &whpx_global;
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struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
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WHvDeleteVirtualProcessor(whpx->partition, cpu->cpu_index);
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WHvEmulatorDestroyEmulator(vcpu->emulator);
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whp_dispatch.WHvDeleteVirtualProcessor(whpx->partition, cpu->cpu_index);
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whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator);
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g_free(cpu->hax_vcpu);
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return;
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}
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@ -1139,7 +1156,8 @@ void whpx_destroy_vcpu(CPUState *cpu)
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void whpx_vcpu_kick(CPUState *cpu)
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{
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struct whpx_state *whpx = &whpx_global;
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WHvCancelRunVirtualProcessor(whpx->partition, cpu->cpu_index, 0);
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whp_dispatch.WHvCancelRunVirtualProcessor(
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whpx->partition, cpu->cpu_index, 0);
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}
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/*
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@ -1165,17 +1183,17 @@ static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size,
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*/
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if (add) {
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hr = WHvMapGpaRange(whpx->partition,
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host_va,
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start_pa,
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size,
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(WHvMapGpaRangeFlagRead |
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WHvMapGpaRangeFlagExecute |
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(rom ? 0 : WHvMapGpaRangeFlagWrite)));
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hr = whp_dispatch.WHvMapGpaRange(whpx->partition,
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host_va,
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start_pa,
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size,
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(WHvMapGpaRangeFlagRead |
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WHvMapGpaRangeFlagExecute |
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(rom ? 0 : WHvMapGpaRangeFlagWrite)));
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} else {
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hr = WHvUnmapGpaRange(whpx->partition,
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start_pa,
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size);
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hr = whp_dispatch.WHvUnmapGpaRange(whpx->partition,
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start_pa,
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size);
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}
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if (FAILED(hr)) {
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@ -1289,18 +1307,24 @@ static int whpx_accel_init(MachineState *ms)
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whpx = &whpx_global;
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if (!init_whp_dispatch()) {
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ret = -ENOSYS;
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goto error;
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}
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memset(whpx, 0, sizeof(struct whpx_state));
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whpx->mem_quota = ms->ram_size;
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hr = WHvGetCapability(WHvCapabilityCodeHypervisorPresent, &whpx_cap,
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sizeof(whpx_cap), &whpx_cap_size);
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hr = whp_dispatch.WHvGetCapability(
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WHvCapabilityCodeHypervisorPresent, &whpx_cap,
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sizeof(whpx_cap), &whpx_cap_size);
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if (FAILED(hr) || !whpx_cap.HypervisorPresent) {
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error_report("WHPX: No accelerator found, hr=%08lx", hr);
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ret = -ENOSPC;
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goto error;
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}
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hr = WHvCreatePartition(&whpx->partition);
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hr = whp_dispatch.WHvCreatePartition(&whpx->partition);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to create partition, hr=%08lx", hr);
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ret = -EINVAL;
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@ -1309,10 +1333,11 @@ static int whpx_accel_init(MachineState *ms)
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memset(&prop, 0, sizeof(WHV_PARTITION_PROPERTY));
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prop.ProcessorCount = smp_cpus;
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hr = WHvSetPartitionProperty(whpx->partition,
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WHvPartitionPropertyCodeProcessorCount,
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&prop,
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sizeof(WHV_PARTITION_PROPERTY));
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hr = whp_dispatch.WHvSetPartitionProperty(
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whpx->partition,
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WHvPartitionPropertyCodeProcessorCount,
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&prop,
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sizeof(WHV_PARTITION_PROPERTY));
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if (FAILED(hr)) {
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error_report("WHPX: Failed to set partition core count to %d,"
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@ -1323,10 +1348,11 @@ static int whpx_accel_init(MachineState *ms)
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memset(&prop, 0, sizeof(WHV_PARTITION_PROPERTY));
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prop.ExtendedVmExits.X64CpuidExit = 1;
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hr = WHvSetPartitionProperty(whpx->partition,
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WHvPartitionPropertyCodeExtendedVmExits,
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&prop,
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sizeof(WHV_PARTITION_PROPERTY));
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hr = whp_dispatch.WHvSetPartitionProperty(
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whpx->partition,
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WHvPartitionPropertyCodeExtendedVmExits,
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&prop,
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sizeof(WHV_PARTITION_PROPERTY));
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if (FAILED(hr)) {
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error_report("WHPX: Failed to enable partition extended X64CpuidExit"
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@ -1336,11 +1362,11 @@ static int whpx_accel_init(MachineState *ms)
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}
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UINT32 cpuidExitList[] = {1};
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hr = WHvSetPartitionProperty(whpx->partition,
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WHvPartitionPropertyCodeCpuidExitList,
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cpuidExitList,
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RTL_NUMBER_OF(cpuidExitList) * sizeof(UINT32));
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hr = whp_dispatch.WHvSetPartitionProperty(
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whpx->partition,
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WHvPartitionPropertyCodeCpuidExitList,
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cpuidExitList,
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RTL_NUMBER_OF(cpuidExitList) * sizeof(UINT32));
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if (FAILED(hr)) {
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error_report("WHPX: Failed to set partition CpuidExitList hr=%08lx",
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hr);
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@ -1348,7 +1374,7 @@ static int whpx_accel_init(MachineState *ms)
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goto error;
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}
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hr = WHvSetupPartition(whpx->partition);
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hr = whp_dispatch.WHvSetupPartition(whpx->partition);
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if (FAILED(hr)) {
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error_report("WHPX: Failed to setup partition, hr=%08lx", hr);
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ret = -EINVAL;
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@ -1365,7 +1391,7 @@ static int whpx_accel_init(MachineState *ms)
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error:
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if (NULL != whpx->partition) {
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WHvDeletePartition(whpx->partition);
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whp_dispatch.WHvDeletePartition(whpx->partition);
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whpx->partition = NULL;
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}
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@ -1397,4 +1423,54 @@ static void whpx_type_init(void)
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type_register_static(&whpx_accel_type);
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}
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bool init_whp_dispatch(void)
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{
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const char *lib_name;
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HMODULE hLib;
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if (whp_dispatch_initialized) {
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return true;
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}
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#define WHP_LOAD_FIELD(return_type, function_name, signature) \
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whp_dispatch.function_name = \
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(function_name ## _t)GetProcAddress(hLib, #function_name); \
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if (!whp_dispatch.function_name) { \
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error_report("Could not load function %s from library %s.", \
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#function_name, lib_name); \
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goto error; \
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} \
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lib_name = "WinHvPlatform.dll";
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hWinHvPlatform = LoadLibrary(lib_name);
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if (!hWinHvPlatform) {
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error_report("Could not load library %s.", lib_name);
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goto error;
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}
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hLib = hWinHvPlatform;
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LIST_WINHVPLATFORM_FUNCTIONS(WHP_LOAD_FIELD)
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|
||||
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);
|
||||
|
|
|
|||
Loading…
Reference in New Issue