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cpus: extract out whpx-specific code to target/i386/

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register a "CpusAccel" interface for WHPX as well.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Claudio Fontana 2020-07-07 11:39:12 +02:00 committed by Paolo Bonzini
parent e92558e4bf
commit 8ef39ecfa6
6 changed files with 121 additions and 80 deletions
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1
MAINTAINERS
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@ -451,6 +451,7 @@ WHPX CPUs
M: Sunil Muthuswamy <sunilmut@microsoft.com>
S: Supported
F: target/i386/whpx-all.c
F: target/i386/whpx-cpus.c
F: target/i386/whp-dispatch.h
F: accel/stubs/whpx-stub.c
F: include/sysemu/whpx.h

79
softmmu/cpus.c
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@ -34,7 +34,6 @@
#include "sysemu/hw_accel.h"
#include "sysemu/kvm.h"
#include "sysemu/hvf.h"
#include "sysemu/whpx.h"
#include "exec/exec-all.h"
#include "qemu/thread.h"
#include "qemu/plugin.h"
@ -178,9 +177,6 @@ void cpu_synchronize_state(CPUState *cpu)
if (cpus_accel && cpus_accel->synchronize_state) {
cpus_accel->synchronize_state(cpu);
}
if (whpx_enabled()) {
whpx_cpu_synchronize_state(cpu);
}
}
void cpu_synchronize_post_reset(CPUState *cpu)
@ -188,9 +184,6 @@ void cpu_synchronize_post_reset(CPUState *cpu)
if (cpus_accel && cpus_accel->synchronize_post_reset) {
cpus_accel->synchronize_post_reset(cpu);
}
if (whpx_enabled()) {
whpx_cpu_synchronize_post_reset(cpu);
}
}
void cpu_synchronize_post_init(CPUState *cpu)
@ -198,9 +191,6 @@ void cpu_synchronize_post_init(CPUState *cpu)
if (cpus_accel && cpus_accel->synchronize_post_init) {
cpus_accel->synchronize_post_init(cpu);
}
if (whpx_enabled()) {
whpx_cpu_synchronize_post_init(cpu);
}
}
void cpu_synchronize_pre_loadvm(CPUState *cpu)
@ -211,9 +201,6 @@ void cpu_synchronize_pre_loadvm(CPUState *cpu)
if (hvf_enabled()) {
hvf_cpu_synchronize_pre_loadvm(cpu);
}
if (whpx_enabled()) {
whpx_cpu_synchronize_pre_loadvm(cpu);
}
}
int64_t cpus_get_virtual_clock(void)
@ -445,48 +432,6 @@ static void *qemu_hvf_cpu_thread_fn(void *arg)
return NULL;
}
static void *qemu_whpx_cpu_thread_fn(void *arg)
{
CPUState *cpu = arg;
int r;
rcu_register_thread();
qemu_mutex_lock_iothread();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
current_cpu = cpu;
r = whpx_init_vcpu(cpu);
if (r < 0) {
fprintf(stderr, "whpx_init_vcpu failed: %s\n", strerror(-r));
exit(1);
}
/* signal CPU creation */
cpu_thread_signal_created(cpu);
qemu_guest_random_seed_thread_part2(cpu->random_seed);
do {
if (cpu_can_run(cpu)) {
r = whpx_vcpu_exec(cpu);
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(cpu);
}
}
while (cpu_thread_is_idle(cpu)) {
qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
}
qemu_wait_io_event_common(cpu);
} while (!cpu->unplug || cpu_can_run(cpu));
whpx_destroy_vcpu(cpu);
cpu_thread_signal_destroyed(cpu);
qemu_mutex_unlock_iothread();
rcu_unregister_thread();
return NULL;
}
void cpus_kick_thread(CPUState *cpu)
{
#ifndef _WIN32
@ -501,12 +446,6 @@ void cpus_kick_thread(CPUState *cpu)
fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));
exit(1);
}
#else /* _WIN32 */
if (!qemu_cpu_is_self(cpu)) {
if (whpx_enabled()) {
whpx_vcpu_kick(cpu);
}
}
#endif
}
@ -681,22 +620,6 @@ static void qemu_hvf_start_vcpu(CPUState *cpu)
cpu, QEMU_THREAD_JOINABLE);
}
static void qemu_whpx_start_vcpu(CPUState *cpu)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
cpu->thread = g_malloc0(sizeof(QemuThread));
cpu->halt_cond = g_malloc0(sizeof(QemuCond));
qemu_cond_init(cpu->halt_cond);
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX",
cpu->cpu_index);
qemu_thread_create(cpu->thread, thread_name, qemu_whpx_cpu_thread_fn,
cpu, QEMU_THREAD_JOINABLE);
#ifdef _WIN32
cpu->hThread = qemu_thread_get_handle(cpu->thread);
#endif
}
void cpus_register_accel(const CpusAccel *ca)
{
assert(ca != NULL);
@ -726,8 +649,6 @@ void qemu_init_vcpu(CPUState *cpu)
cpus_accel->create_vcpu_thread(cpu);
} else if (hvf_enabled()) {
qemu_hvf_start_vcpu(cpu);
} else if (whpx_enabled()) {
qemu_whpx_start_vcpu(cpu);
} else {
g_assert_not_reached();
}

5
target/i386/meson.build
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@ -30,7 +30,10 @@ i386_softmmu_ss.add(files(
))
i386_softmmu_ss.add(when: 'CONFIG_HYPERV', if_true: files('hyperv.c'), if_false: files('hyperv-stub.c'))
i386_softmmu_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'))
i386_softmmu_ss.add(when: 'CONFIG_WHPX', if_true: files('whpx-all.c'))
i386_softmmu_ss.add(when: 'CONFIG_WHPX', if_true: files(
'whpx-all.c',
'whpx-cpus.c',
))
i386_softmmu_ss.add(when: 'CONFIG_HAX', if_true: files(
'hax-all.c',
'hax-mem.c',

3
target/i386/whpx-all.c
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@ -24,6 +24,8 @@
#include "migration/blocker.h"
#include "whp-dispatch.h"
#include "whpx-cpus.h"
#include <WinHvPlatform.h>
#include <WinHvEmulation.h>
@ -1650,6 +1652,7 @@ static int whpx_accel_init(MachineState *ms)
whpx_memory_init();
cpu_interrupt_handler = whpx_handle_interrupt;
cpus_register_accel(&whpx_cpus);
printf("Windows Hypervisor Platform accelerator is operational\n");
return 0;

96
target/i386/whpx-cpus.c Normal file
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@ -0,0 +1,96 @@
/*
* QEMU Windows Hypervisor Platform accelerator (WHPX)
*
* Copyright Microsoft Corp. 2017
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "sysemu/kvm_int.h"
#include "qemu/main-loop.h"
#include "sysemu/cpus.h"
#include "qemu/guest-random.h"
#include "sysemu/whpx.h"
#include "whpx-cpus.h"
#include <WinHvPlatform.h>
#include <WinHvEmulation.h>
static void *whpx_cpu_thread_fn(void *arg)
{
CPUState *cpu = arg;
int r;
rcu_register_thread();
qemu_mutex_lock_iothread();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
current_cpu = cpu;
r = whpx_init_vcpu(cpu);
if (r < 0) {
fprintf(stderr, "whpx_init_vcpu failed: %s\n", strerror(-r));
exit(1);
}
/* signal CPU creation */
cpu_thread_signal_created(cpu);
qemu_guest_random_seed_thread_part2(cpu->random_seed);
do {
if (cpu_can_run(cpu)) {
r = whpx_vcpu_exec(cpu);
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(cpu);
}
}
while (cpu_thread_is_idle(cpu)) {
qemu_cond_wait_iothread(cpu->halt_cond);
}
qemu_wait_io_event_common(cpu);
} while (!cpu->unplug || cpu_can_run(cpu));
whpx_destroy_vcpu(cpu);
cpu_thread_signal_destroyed(cpu);
qemu_mutex_unlock_iothread();
rcu_unregister_thread();
return NULL;
}
static void whpx_start_vcpu_thread(CPUState *cpu)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
cpu->thread = g_malloc0(sizeof(QemuThread));
cpu->halt_cond = g_malloc0(sizeof(QemuCond));
qemu_cond_init(cpu->halt_cond);
snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX",
cpu->cpu_index);
qemu_thread_create(cpu->thread, thread_name, whpx_cpu_thread_fn,
cpu, QEMU_THREAD_JOINABLE);
#ifdef _WIN32
cpu->hThread = qemu_thread_get_handle(cpu->thread);
#endif
}
static void whpx_kick_vcpu_thread(CPUState *cpu)
{
if (!qemu_cpu_is_self(cpu)) {
whpx_vcpu_kick(cpu);
}
}
const CpusAccel whpx_cpus = {
.create_vcpu_thread = whpx_start_vcpu_thread,
.kick_vcpu_thread = whpx_kick_vcpu_thread,
.synchronize_post_reset = whpx_cpu_synchronize_post_reset,
.synchronize_post_init = whpx_cpu_synchronize_post_init,
.synchronize_state = whpx_cpu_synchronize_state,
.synchronize_pre_loadvm = whpx_cpu_synchronize_pre_loadvm,
};

17
target/i386/whpx-cpus.h Normal file
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@ -0,0 +1,17 @@
/*
* Accelerator CPUS Interface
*
* Copyright 2020 SUSE LLC
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef WHPX_CPUS_H
#define WHPX_CPUS_H
#include "sysemu/cpus.h"
extern const CpusAccel whpx_cpus;
#endif /* WHPX_CPUS_H */