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Plumb the HAXM-based hardware acceleration support

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Use the Intel HAX is kernel-based hardware acceleration module for
Windows (similar to KVM on Linux).

Based on the "target/i386: Add Intel HAX to android emulator" patch
from David Chou <david.j.chou@intel.com>

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Message-Id: <7b9cae28a0c379ab459c7a8545c9a39762bd394f.1484045952.git.vpalatin@chromium.org>
[Drop hax_populate_ram stub. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vincent Palatin 2017-01-10 11:59:57 +01:00 • committed by Paolo Bonzini
parent 47c1c8c12f
commit b0cb0a66d6
11 changed files with 141 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

78
cpus.c
View file

@ -35,6 +35,7 @@
#include "sysemu/dma.h"
#include "sysemu/hw_accel.h"
#include "sysemu/kvm.h"
#include "sysemu/hax.h"
#include "qmp-commands.h"
#include "exec/exec-all.h"
@ -1221,6 +1222,46 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
return NULL;
}
static void *qemu_hax_cpu_thread_fn(void *arg)
{
CPUState *cpu = arg;
int r;
qemu_thread_get_self(cpu->thread);
qemu_mutex_lock(&qemu_global_mutex);
cpu->thread_id = qemu_get_thread_id();
cpu->created = true;
cpu->halted = 0;
current_cpu = cpu;
hax_init_vcpu(cpu);
qemu_cond_signal(&qemu_cpu_cond);
while (1) {
if (cpu_can_run(cpu)) {
r = hax_smp_cpu_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);
}
#ifdef _WIN32
SleepEx(0, TRUE);
#endif
qemu_wait_io_event_common(cpu);
}
return NULL;
}
#ifdef _WIN32
static void CALLBACK dummy_apc_func(ULONG_PTR unused)
{
}
#endif
static void qemu_cpu_kick_thread(CPUState *cpu)
{
#ifndef _WIN32
@ -1236,7 +1277,13 @@ static void qemu_cpu_kick_thread(CPUState *cpu)
exit(1);
}
#else /* _WIN32 */
abort();
if (!qemu_cpu_is_self(cpu)) {
if (!QueueUserAPC(dummy_apc_func, cpu->hThread, 0)) {
fprintf(stderr, "%s: QueueUserAPC failed with error %lu\n",
__func__, GetLastError());
exit(1);
}
}
#endif
}
@ -1259,6 +1306,13 @@ void qemu_cpu_kick(CPUState *cpu)
if (tcg_enabled()) {
qemu_cpu_kick_no_halt();
} else {
if (hax_enabled()) {
/*
* FIXME: race condition with the exit_request check in
* hax_vcpu_hax_exec
*/
cpu->exit_request = 1;
}
qemu_cpu_kick_thread(cpu);
}
}
@ -1419,6 +1473,26 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
}
}
static void qemu_hax_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/HAX",
cpu->cpu_index);
qemu_thread_create(cpu->thread, thread_name, qemu_hax_cpu_thread_fn,
cpu, QEMU_THREAD_JOINABLE);
#ifdef _WIN32
cpu->hThread = qemu_thread_get_handle(cpu->thread);
#endif
while (!cpu->created) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
}
static void qemu_kvm_start_vcpu(CPUState *cpu)
{
char thread_name[VCPU_THREAD_NAME_SIZE];
@ -1469,6 +1543,8 @@ void qemu_init_vcpu(CPUState *cpu)
if (kvm_enabled()) {
qemu_kvm_start_vcpu(cpu);
} else if (hax_enabled()) {
qemu_hax_start_vcpu(cpu);
} else if (tcg_enabled()) {
qemu_tcg_init_vcpu(cpu);
} else {