From a1a9cb0ccd9aa6f0afcf151006fd981ec39ffa15 Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Fri, 26 Sep 2014 17:45:17 -0300 Subject: accel: Move accel code to accel.c Reviewed-by: Paolo Bonzini Signed-off-by: Eduardo Habkost Signed-off-by: Paolo Bonzini --- accel.c | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 accel.c (limited to 'accel.c') diff --git a/accel.c b/accel.c new file mode 100644 index 0000000000..9424796b8b --- /dev/null +++ b/accel.c @@ -0,0 +1,113 @@ +/* + * QEMU System Emulator, accelerator interfaces + * + * Copyright (c) 2003-2008 Fabrice Bellard + * Copyright (c) 2014 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "sysemu/accel.h" +#include "qemu-common.h" +#include "sysemu/arch_init.h" +#include "sysemu/sysemu.h" +#include "sysemu/kvm.h" +#include "sysemu/qtest.h" +#include "hw/xen/xen.h" + +int tcg_tb_size; +static bool tcg_allowed = true; + +static int tcg_init(MachineClass *mc) +{ + tcg_exec_init(tcg_tb_size * 1024 * 1024); + return 0; +} + +static struct { + const char *opt_name; + const char *name; + int (*available)(void); + int (*init)(MachineClass *mc); + bool *allowed; +} accel_list[] = { + { "tcg", "tcg", tcg_available, tcg_init, &tcg_allowed }, + { "xen", "Xen", xen_available, xen_init, &xen_allowed }, + { "kvm", "KVM", kvm_available, kvm_init, &kvm_allowed }, + { "qtest", "QTest", qtest_available, qtest_init_accel, &qtest_allowed }, +}; + +int configure_accelerator(MachineClass *mc) +{ + const char *p; + char buf[10]; + int i, ret; + bool accel_initialised = false; + bool init_failed = false; + + p = qemu_opt_get(qemu_get_machine_opts(), "accel"); + if (p == NULL) { + /* Use the default "accelerator", tcg */ + p = "tcg"; + } + + while (!accel_initialised && *p != '\0') { + if (*p == ':') { + p++; + } + p = get_opt_name(buf, sizeof(buf), p, ':'); + for (i = 0; i < ARRAY_SIZE(accel_list); i++) { + if (strcmp(accel_list[i].opt_name, buf) == 0) { + if (!accel_list[i].available()) { + printf("%s not supported for this target\n", + accel_list[i].name); + break; + } + *(accel_list[i].allowed) = true; + ret = accel_list[i].init(mc); + if (ret < 0) { + init_failed = true; + fprintf(stderr, "failed to initialize %s: %s\n", + accel_list[i].name, + strerror(-ret)); + *(accel_list[i].allowed) = false; + } else { + accel_initialised = true; + } + break; + } + } + if (i == ARRAY_SIZE(accel_list)) { + fprintf(stderr, "\"%s\" accelerator does not exist.\n", buf); + } + } + + if (!accel_initialised) { + if (!init_failed) { + fprintf(stderr, "No accelerator found!\n"); + } + exit(1); + } + + if (init_failed) { + fprintf(stderr, "Back to %s accelerator.\n", accel_list[i].name); + } + + return !accel_initialised; +} -- cgit v1.2.1