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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] libxl: hiding hvmloader and device_model options from users by default (Was: Re: [PATCH 00 of 11] RFC: hvmloader SeaBIOS integration)
On Tue, 2011-04-05 at 16:46 +0100, Ian Campbell wrote:
>
> It's a great shame that the choice of hvmloader binary was exposed to
> users through the config file format. We'll have to cross that bridge
> later I guess...
IMHO these should never have been exposed to users as something they are
required to think about, unless they want to.
What about something like the following as a transition plan:
At the libxl API level:
* Move libxl_domain_build_info.kernel into the PV side of the
tagged union (using this field to specify both PV kernel and
hvmloader is confusing)
* Add hvmloader (a string) to the HVM side of the tagged union or
perhaps to libxl_device_model_info?
* Add libxl_device_model_info.version allowing the user to say
which qemu version (e.g. old qemu-xen or qemu upstream) they
want for a domain
* Default both the hvmloader and device_model fields to NULL (or
some other explicit "do the right thing" default) and DTRT when
building a domain with that value in those fields, but still
allow users to override.
At the xl level:
* WARN if an HVM guest cfg uses the "kernel" config option, and
direct users to the "hvmloader_override" option if they really
do not want the default.
* WARN if an HVM guest cfg uses the "device_model" config option,
and again direct users to the "device_model_override" option if
they really do not want the default.
* Support a new "device_model_version" option which sets the new
libxl_device_model_info.version field.
(other toolstacks would do something similar presumably)
I suspect that the vast majority of users only have these config options
because they've copied them from somewhere and they normally have no
interest in which specific hvmloader or device model is used. Renaming
the fields and warning when they are used makes these decisions
internal. This will allow us to make decisions at a platform level
regarding the preferred hvmloader, device model, stub domain etc without
requiring everyone to change their configuration files.
(we could consider a period where we simply print a deprecation message
but still honour the option, I don't think it's necessary though)
Adding a device model version to the API is intended to make it easy for
users to select what they need without having to know about the paths to
specific binaries etc. It also feeds the hvmloader decision. Most
importantly it gets rid of the parsing of the output of qemu -h...
The following is a quick lashup of the above. It is missing the key Do
The Right Thing functions at the moment so it won't even link...
Opinions? Shall I persist with this path?
Ian.
diff -r e471a31bf226 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl.c Tue Apr 05 17:05:59 2011 +0100
@@ -2283,7 +2283,7 @@ int libxl_domain_need_memory(libxl_ctx *
*need_memkb = b_info->target_memkb;
if (b_info->hvm) {
*need_memkb += b_info->shadow_memkb + LIBXL_HVM_EXTRA_MEMORY;
- if (strstr(dm_info->device_model, "stubdom-dm"))
+ if (strstr(libxl_domain_device_model(dm_info), "stubdom-dm"))
*need_memkb += 32 * 1024;
} else
*need_memkb += b_info->shadow_memkb + LIBXL_PV_EXTRA_MEMORY;
diff -r e471a31bf226 tools/libxl/libxl.h
--- a/tools/libxl/libxl.h Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl.h Tue Apr 05 17:05:59 2011 +0100
@@ -209,6 +209,12 @@ enum {
#define LIBXL_VERSION 0
+/*
+ * 1 - Historical qemu-xen device model
+ * 2 - Upstream qemu
+ */
+#define LIBXL_DEVICE_MODEL_VERSION_DEFAULT 2
+
typedef struct {
libxl_domain_create_info c_info;
libxl_domain_build_info b_info;
@@ -249,6 +255,10 @@ int libxl_domain_shutdown(libxl_ctx *ctx
int libxl_domain_destroy(libxl_ctx *ctx, uint32_t domid, int force);
int libxl_domain_preserve(libxl_ctx *ctx, uint32_t domid,
libxl_domain_create_info *info, const char *name_suffix, libxl_uuid new_uuid);
+/* Returns the device model */
+const char *libxl_domain_device_model(libxl_device_model_info *dm_info);
+/* Returns the hvmloader to use for this device model */
+char *libxl_domain_hvmloader(libxl_device_model_info *dm_info);
/* get max. number of cpus supported by hypervisor */
int libxl_get_max_cpus(libxl_ctx *ctx);
diff -r e471a31bf226 tools/libxl/libxl.idl
--- a/tools/libxl/libxl.idl Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl.idl Tue Apr 05 17:05:59 2011 +0100
@@ -151,12 +151,12 @@ libxl_domain_build_info = Struct("domain
("video_memkb", uint32),
("shadow_memkb", uint32),
("disable_migrate", bool),
- ("kernel", libxl_file_reference),
("cpuid", libxl_cpuid_policy_list),
("hvm", integer),
("u", KeyedUnion(None, "hvm",
[("hvm", "%s", Struct(None,
- [("pae", bool),
+ [("hvmloader", string),
+ ("pae", bool),
("apic", bool),
("acpi", bool),
("nx", bool),
@@ -167,7 +167,8 @@ libxl_domain_build_info = Struct("domain
("timer_mode", integer),
])),
("pv", "!%s", Struct(None,
- [("slack_memkb", uint32),
+ [("kernel", libxl_file_reference),
+ ("slack_memkb", uint32),
("bootloader", string),
("bootloader_args", string),
("cmdline", string),
@@ -194,7 +195,8 @@ libxl_device_model_info = Struct("device
("domid", integer),
("uuid", libxl_uuid, False, "this is use only with stubdom,
and must be different from the domain uuid"),
("dom_name", string),
- ("device_model", string),
+ ("device_model_version", integer),
+ ("device_model_override", string, False, "force a particular device model
binary. You must set device_model_version too"),
("saved_state", string),
("type", libxl_qemu_machine_type),
("target_ram", uint32),
diff -r e471a31bf226 tools/libxl/libxl_bootloader.c
--- a/tools/libxl/libxl_bootloader.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_bootloader.c Tue Apr 05 17:05:59 2011 +0100
@@ -44,8 +44,9 @@ static char **make_bootloader_args(libxl
flexarray_set(args, nr++, (char *)info->u.pv.bootloader);
- if (info->kernel.path)
- flexarray_set(args, nr++, libxl__sprintf(gc, "--kernel=%s",
info->kernel.path));
+ if (info->u.pv.kernel.path)
+ flexarray_set(args, nr++, libxl__sprintf(gc, "--kernel=%s",
+ info->u.pv.kernel.path));
if (info->u.pv.ramdisk.path)
flexarray_set(args, nr++, libxl__sprintf(gc, "--ramdisk=%s",
info->u.pv.ramdisk.path));
if (info->u.pv.cmdline && *info->u.pv.cmdline != '\0')
@@ -277,10 +278,10 @@ static void parse_bootloader_result(libx
{
while (*o != '\0') {
if (strncmp("kernel ", o, strlen("kernel ")) == 0) {
- free(info->kernel.path);
- info->kernel.path = strdup(o + strlen("kernel "));
- libxl__file_reference_map(&info->kernel);
- unlink(info->kernel.path);
+ free(info->u.pv.kernel.path);
+ info->u.pv.kernel.path = strdup(o + strlen("kernel "));
+ libxl__file_reference_map(&info->u.pv.kernel);
+ unlink(info->u.pv.kernel.path);
} else if (strncmp("ramdisk ", o, strlen("ramdisk ")) == 0) {
free(info->u.pv.ramdisk.path);
info->u.pv.ramdisk.path = strdup(o + strlen("ramdisk "));
diff -r e471a31bf226 tools/libxl/libxl_create.c
--- a/tools/libxl/libxl_create.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_create.c Tue Apr 05 17:05:59 2011 +0100
@@ -88,8 +88,8 @@ void libxl_init_build_info(libxl_domain_
b_info->shadow_memkb = 0;
if (c_info->hvm) {
b_info->video_memkb = 8 * 1024;
- b_info->kernel.path = strdup("hvmloader");
b_info->hvm = 1;
+ b_info->u.hvm.hvmloader = NULL;
b_info->u.hvm.pae = 1;
b_info->u.hvm.apic = 1;
b_info->u.hvm.acpi = 1;
@@ -111,7 +111,8 @@ void libxl_init_dm_info(libxl_device_mod
libxl_uuid_generate(&dm_info->uuid);
dm_info->dom_name = strdup(c_info->name);
- dm_info->device_model = strdup("qemu-dm");
+ dm_info->device_model_version = LIBXL_DEVICE_MODEL_VERSION_DEFAULT;
+ dm_info->device_model_override = NULL;
dm_info->target_ram = libxl__sizekb_to_mb(b_info->target_memkb);
dm_info->videoram = libxl__sizekb_to_mb(b_info->video_memkb);
dm_info->apic = b_info->u.hvm.apic;
@@ -181,7 +182,7 @@ int libxl__domain_build(libxl__gc *gc, l
vments[i++] = "image/ostype";
vments[i++] = "linux";
vments[i++] = "image/kernel";
- vments[i++] = (char*) info->kernel.path;
+ vments[i++] = (char*) info->u.pv.kernel.path;
vments[i++] = "start_time";
vments[i++] = libxl__sprintf(gc, "%lu.%02d",
start_time.tv_sec,(int)start_time.tv_usec/10000);
if (info->u.pv.ramdisk.path) {
@@ -231,7 +232,7 @@ static int domain_restore(libxl__gc *gc,
vments[i++] = "image/ostype";
vments[i++] = "linux";
vments[i++] = "image/kernel";
- vments[i++] = (char*) info->kernel.path;
+ vments[i++] = (char*) info->u.pv.kernel.path;
vments[i++] = "start_time";
vments[i++] = libxl__sprintf(gc, "%lu.%02d",
start_time.tv_sec,(int)start_time.tv_usec/10000);
if (info->u.pv.ramdisk.path) {
@@ -255,9 +256,10 @@ static int domain_restore(libxl__gc *gc,
}
out:
- libxl__file_reference_unmap(&info->kernel);
- if (!info->hvm)
- libxl__file_reference_unmap(&info->u.pv.ramdisk);
+ if (!info->hvm) {
+ libxl__file_reference_unmap(&info->u.pv.kernel);
+ libxl__file_reference_unmap(&info->u.pv.ramdisk);
+ }
esave = errno;
diff -r e471a31bf226 tools/libxl/libxl_dm.c
--- a/tools/libxl/libxl_dm.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_dm.c Tue Apr 05 17:05:59 2011 +0100
@@ -199,7 +199,7 @@ static char ** libxl__build_device_model
if (!dm_args)
return NULL;
- flexarray_vappend(dm_args, libxl__strdup(gc, info->device_model),
+ flexarray_vappend(dm_args, libxl__strdup(gc,
libxl_domain_device_model(info)),
"-xen-domid", libxl__sprintf(gc, "%d", info->domid),
NULL);
if (info->type == LIBXL_QEMU_MACHINE_TYPE_PV) {
@@ -390,14 +390,16 @@ static char ** libxl__build_device_model
libxl_device_nic *vifs, int
num_vifs)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
- int new_qemu;
- new_qemu = libxl_check_device_model_version(ctx, info->device_model);
-
- if (new_qemu == 1) {
+ switch (info->device_model_version) {
+ case 1:
+ return libxl__build_device_model_args_old(gc, info, disks, num_disks,
vifs, num_vifs);
+ case 2:
return libxl__build_device_model_args_new(gc, info, disks, num_disks,
vifs, num_vifs);
- } else {
- return libxl__build_device_model_args_old(gc, info, disks, num_disks,
vifs, num_vifs);
+ default:
+ LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "unknown device model version
%d",
+ info->device_model_version);
+ return NULL;
}
}
@@ -534,7 +536,8 @@ static int libxl__create_stubdom(libxl__
b_info.max_vcpus = 1;
b_info.max_memkb = 32 * 1024;
b_info.target_memkb = b_info.max_memkb;
- b_info.kernel.path = libxl__abs_path(gc, "ioemu-stubdom.gz",
libxl_xenfirmwaredir_path());
+ b_info.u.pv.kernel.path = libxl__abs_path(gc, "ioemu-stubdom.gz",
+ libxl_xenfirmwaredir_path());
b_info.u.pv.cmdline = libxl__sprintf(gc, " -d %d", info->domid);
b_info.u.pv.ramdisk.path = "";
b_info.u.pv.features = "";
@@ -678,7 +681,7 @@ int libxl__create_device_model(libxl__gc
char *vm_path;
char **pass_stuff;
- if (strstr(info->device_model, "stubdom-dm")) {
+ if (strstr(libxl_domain_device_model(info), "stubdom-dm")) {
libxl_device_vfb vfb;
libxl_device_vkb vkb;
@@ -744,7 +747,8 @@ retry_transaction:
if (!rc) { /* inner child */
setsid();
libxl__exec(null, logfile_w, logfile_w,
- libxl__abs_path(gc, info->device_model,
libxl_libexec_path()),
+ libxl__abs_path(gc, libxl_domain_device_model(info),
+ libxl_libexec_path()),
args);
}
@@ -844,7 +848,8 @@ static int libxl__build_xenpv_qemu_args(
info->nographic = 1;
info->domid = domid;
info->dom_name = libxl_domid_to_name(ctx, domid);
- info->device_model = libxl__abs_path(gc, "qemu-dm", libxl_libexec_path());
+ info->device_model_version = LIBXL_DEVICE_MODEL_VERSION_DEFAULT;
+ info->device_model_override = NULL;
info->type = LIBXL_QEMU_MACHINE_TYPE_PV;
return 0;
}
diff -r e471a31bf226 tools/libxl/libxl_dom.c
--- a/tools/libxl/libxl_dom.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_dom.c Tue Apr 05 17:05:59 2011 +0100
@@ -160,13 +160,17 @@ int libxl__build_pv(libxl__gc *gc, uint3
return ERROR_FAIL;
}
- if (info->kernel.mapped) {
- if ( (ret = xc_dom_kernel_mem(dom, info->kernel.data,
info->kernel.size)) != 0) {
+ if (info->u.pv.kernel.mapped) {
+ ret = xc_dom_kernel_mem(dom,
+ info->u.pv.kernel.data,
+ info->u.pv.kernel.size);
+ if ( ret != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "xc_dom_kernel_mem
failed");
goto out;
}
} else {
- if ( (ret = xc_dom_kernel_file(dom, info->kernel.path)) != 0) {
+ ret = xc_dom_kernel_file(dom, info->u.pv.kernel.path);
+ if ( ret != 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "xc_dom_kernel_file
failed");
goto out;
}
@@ -269,19 +273,14 @@ int libxl__build_hvm(libxl__gc *gc, uint
libxl_ctx *ctx = libxl__gc_owner(gc);
int ret, rc = ERROR_INVAL;
- if (info->kernel.mapped) {
- LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "libxl__build_hvm kernel
cannot be mmapped");
- goto out;
- }
-
rc = ERROR_FAIL;
ret = xc_hvm_build_target_mem(
ctx->xch,
domid,
(info->max_memkb - info->video_memkb) / 1024,
(info->target_memkb - info->video_memkb) / 1024,
- libxl__abs_path(gc, (char *)info->kernel.path,
- libxl_xenfirmwaredir_path()));
+ libxl__abs_path(gc, info->u.hvm.hvmloader,
+ libxl_xenfirmwaredir_path()));
if (ret) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, ret, "hvm building failed");
goto out;
diff -r e471a31bf226 tools/libxl/libxl_internal.c
--- a/tools/libxl/libxl_internal.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_internal.c Tue Apr 05 17:05:59 2011 +0100
@@ -184,10 +184,10 @@ void libxl__log(libxl_ctx *ctx, xentooll
va_end(ap);
}
-char *libxl__abs_path(libxl__gc *gc, char *s, const char *path)
+char *libxl__abs_path(libxl__gc *gc, const char *s, const char *path)
{
if (!s || s[0] == '/')
- return s;
+ return libxl__strdup(gc, s);
return libxl__sprintf(gc, "%s/%s", path, s);
}
diff -r e471a31bf226 tools/libxl/libxl_internal.h
--- a/tools/libxl/libxl_internal.h Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_internal.h Tue Apr 05 17:05:59 2011 +0100
@@ -289,7 +289,7 @@ _hidden void libxl__exec(int stdinfd, in
_hidden void libxl__log_child_exitstatus(libxl__gc *gc,
const char *what, pid_t pid, int status);
-_hidden char *libxl__abs_path(libxl__gc *gc, char *s, const char *path);
+_hidden char *libxl__abs_path(libxl__gc *gc, const char *s, const char *path);
#define LIBXL__LOG_DEBUG XTL_DEBUG
#define LIBXL__LOG_INFO XTL_INFO
diff -r e471a31bf226 tools/libxl/libxl_utils.c
--- a/tools/libxl/libxl_utils.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_utils.c Tue Apr 05 17:05:59 2011 +0100
@@ -636,89 +636,6 @@ int libxl_strtomac(const char *mac_s, ui
return 0;
}
-#define QEMU_VERSION_STR "QEMU emulator version "
-
-
-int libxl_check_device_model_version(libxl_ctx *ctx, char *path)
-{
- libxl__gc gc = LIBXL_INIT_GC(ctx);
- pid_t pid = -1;
- int pipefd[2];
- char buf[100];
- ssize_t i, count = 0;
- int status;
- char *abs_path = NULL;
- int rc = -1;
-
- abs_path = libxl__abs_path(&gc, path, libxl_private_bindir_path());
-
- if (pipe(pipefd))
- goto out;
-
- pid = fork();
- if (pid == -1) {
- goto out;
- }
-
- if (!pid) {
- close(pipefd[0]);
- if (dup2(pipefd[1], STDOUT_FILENO) == -1)
- exit(1);
- execlp(abs_path, abs_path, "-h", NULL);
-
- close(pipefd[1]);
- exit(127);
- }
-
- close(pipefd[1]);
-
- /* attempt to get the first line of `qemu -h` */
- while ((i = read(pipefd[0], buf + count, 99 - count)) > 0) {
- if (i + count > 90)
- break;
- for (int j = 0; j < i; j++) {
- if (buf[j + count] == '\n')
- break;
- }
- count += i;
- }
- count += i;
- close(pipefd[0]);
- waitpid(pid, &status, 0);
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
- goto out;
- }
-
- /* Check if we have the forked qemu-xen. */
- /* QEMU-DM emulator version 0.10.2, ... */
- if (strncmp("QEMU-DM ", buf, 7) == 0) {
- rc = 0;
- goto out;
- }
-
- /* Check if the version is above 12.0 */
- /* The first line is : QEMU emulator version 0.12.50, ... */
- if (strncmp(QEMU_VERSION_STR, buf, strlen(QEMU_VERSION_STR)) == 0) {
- int major, minor;
- char *endptr = NULL;
- char *v = buf + strlen(QEMU_VERSION_STR);
-
- major = strtol(v, &endptr, 10);
- if (major == 0 && endptr && *endptr == '.') {
- v = endptr + 1;
- minor = strtol(v, &endptr, 10);
- if (minor >= 12) {
- rc = 1;
- goto out;
- }
- }
- }
- rc = 0;
-out:
- libxl__free_all(&gc);
- return rc;
-}
-
int libxl_cpumap_alloc(libxl_ctx *ctx, libxl_cpumap *cpumap)
{
int max_cpus;
diff -r e471a31bf226 tools/libxl/libxl_utils.h
--- a/tools/libxl/libxl_utils.h Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/libxl_utils.h Tue Apr 05 17:05:59 2011 +0100
@@ -71,12 +71,6 @@ int libxl_strtomac(const char *mac_s, ui
int libxl_devid_to_device_net2(libxl_ctx *ctx, uint32_t domid,
const char *devid, libxl_device_net2 *net2);
-/* check the version of qemu
- * return 1 if is the new one
- * return 0 if is the old one
- * return -1 if there are an error */
-int libxl_check_device_model_version(libxl_ctx *ctx, char *path);
-
int libxl_cpumap_alloc(libxl_ctx *ctx, libxl_cpumap *cpumap);
int libxl_cpumap_test(libxl_cpumap *cpumap, int cpu);
void libxl_cpumap_set(libxl_cpumap *cpumap, int cpu);
diff -r e471a31bf226 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c Tue Apr 05 15:29:12 2011 +0100
+++ b/tools/libxl/xl_cmdimpl.c Tue Apr 05 17:05:59 2011 +0100
@@ -337,7 +337,7 @@ static void printf_info(int domid,
printf("\t(image\n");
if (c_info->hvm) {
printf("\t\t(hvm\n");
- printf("\t\t\t(loader %s)\n", b_info->kernel.path);
+ printf("\t\t\t(loader %s)\n", b_info->u.hvm.hvmloader);
printf("\t\t\t(video_memkb %d)\n", b_info->video_memkb);
printf("\t\t\t(shadow_memkb %d)\n", b_info->shadow_memkb);
printf("\t\t\t(pae %d)\n", b_info->u.hvm.pae);
@@ -349,7 +349,7 @@ static void printf_info(int domid,
printf("\t\t\t(vpt_align %d)\n", b_info->u.hvm.vpt_align);
printf("\t\t\t(timer_mode %d)\n", b_info->u.hvm.timer_mode);
- printf("\t\t\t(device_model %s)\n", dm_info->device_model);
+ printf("\t\t\t(device_model %s)\n",
libxl_domain_device_model(dm_info));
printf("\t\t\t(videoram %d)\n", dm_info->videoram);
printf("\t\t\t(stdvga %d)\n", dm_info->stdvga);
printf("\t\t\t(vnc %d)\n", dm_info->vnc);
@@ -369,7 +369,7 @@ static void printf_info(int domid,
printf("\t\t)\n");
} else {
printf("\t\t(linux %d)\n", b_info->hvm);
- printf("\t\t\t(kernel %s)\n", b_info->kernel.path);
+ printf("\t\t\t(kernel %s)\n", b_info->u.pv.kernel.path);
printf("\t\t\t(cmdline %s)\n", b_info->u.pv.cmdline);
printf("\t\t\t(ramdisk %s)\n", b_info->u.pv.ramdisk.path);
printf("\t\t)\n");
@@ -741,12 +741,16 @@ static void parse_config_data(const char
if (!xlu_cfg_get_long (config, "videoram", &l))
b_info->video_memkb = l * 1024;
- xlu_cfg_replace_string (config, "kernel", &b_info->kernel.path);
-
if (!xlu_cfg_get_long (config, "gfx_passthru", &l))
dm_info->gfx_passthru = l;
if (c_info->hvm == 1) {
+ if (!xlu_cfg_get_string (config, "kernel", &buf))
+ fprintf(stderr, "WARNING: ignoring \"kernel\" directive for HVM
guest. "
+ "Use \"hvmloader_override\" instead if you really want a
non-default hvmloader\n");
+
+ xlu_cfg_replace_string (config, "hvmloader_override",
+ &b_info->u.hvm.hvmloader);
if (!xlu_cfg_get_long (config, "pae", &l))
b_info->u.hvm.pae = l;
if (!xlu_cfg_get_long (config, "apic", &l))
@@ -767,6 +771,8 @@ static void parse_config_data(const char
char *cmdline = NULL;
const char *root = NULL, *extra = "";
+ xlu_cfg_replace_string (config, "kernel", &b_info->u.pv.kernel.path);
+
xlu_cfg_get_string (config, "root", &root);
xlu_cfg_get_string (config, "extra", &extra);
@@ -785,7 +791,7 @@ static void parse_config_data(const char
xlu_cfg_replace_string (config, "bootloader",
&b_info->u.pv.bootloader);
xlu_cfg_replace_string (config, "bootloader_args",
&b_info->u.pv.bootloader_args);
- if (!b_info->u.pv.bootloader && !b_info->kernel.path) {
+ if (!b_info->u.pv.bootloader && !b_info->u.pv.kernel.path) {
fprintf(stderr, "Neither kernel nor bootloader specified\n");
exit(1);
}
@@ -1120,7 +1126,17 @@ skip_vfb:
libxl_init_dm_info(dm_info, c_info, b_info);
/* then process config related to dm */
- xlu_cfg_replace_string (config, "device_model",
&dm_info->device_model);
+ if (!xlu_cfg_get_string (config, "device_model", &buf))
+ fprintf(stderr, "WARNING: ignoring device_model directive. "
+ "Use \"device_model_override\" instead if you really want
a non-default device_model\n");
+
+ xlu_cfg_replace_string (config, "device_model_override",
+ &dm_info->device_model_override);
+ if (!xlu_cfg_get_long (config, "device_model_version", &l))
+ dm_info->device_model_version = l;
+ else if (dm_info->device_model_override)
+ fprintf(stderr, "WARNING: device model override given without
specific DM version, assuming latest\n");
+
if (!xlu_cfg_get_long (config, "stdvga", &l))
dm_info->stdvga = l;
if (!xlu_cfg_get_long (config, "vnc", &l))
@@ -1159,6 +1175,10 @@ skip_vfb:
dm_info->extra[i] = a ? strdup(a) : NULL;
}
}
+
+ /* Now we can select an hvmloader */
+ if ( b_info->u.hvm.hvmloader )
+ b_info->u.hvm.hvmloader = libxl_domain_hvmloader(dm_info);
}
dm_info->type = c_info->hvm ? LIBXL_QEMU_MACHINE_TYPE_FV :
LIBXL_QEMU_MACHINE_TYPE_PV;
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