lkml.org 
[lkml]   [2015]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3 01/16] Introduce probe mode for machine type none
On Mon, Mar 02, 2015 at 01:43:53PM +0100, Michael Mueller wrote:
> QEMU now switches into "probe mode" when the selected machine is "none" and no
> specific accelerator(s) has been requested (i.e.: "-machine none").
>
> In probe mode a by "<ARCH>_CONFIG" defines predefined list of accelerators run
> their init() methods.
>
> Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
> ---
[...]
> int configure_accelerator(MachineState *ms)
> {
> - const char *p;
> + const char *p, *name;
> char buf[10];
> int ret;
> bool accel_initialised = false;
> bool init_failed = false;
> AccelClass *acc = NULL;
> + ObjectClass *oc;
> + bool probe_mode = false;
>
> p = qemu_opt_get(qemu_get_machine_opts(), "accel");
> if (p == NULL) {
> - /* Use the default "accelerator", tcg */
> - p = "tcg";
> + oc = (ObjectClass *) MACHINE_GET_CLASS(current_machine);
> + name = object_class_get_name(oc);
> + probe_mode = !strcmp(name, "none" TYPE_MACHINE_SUFFIX);
> + if (probe_mode) {
> + /* Use these accelerators in probe mode, tcg should be last */
> + p = probe_mode_accels;

I don't fully understand the purpose of this patch yet (I will discuss
it in a reply to the cover letter). But if you really want -machine none
to trigger different behavior, why you didn't add a probe_mode field
to MachineClass, so you can set it in the mahine_none class code?

> + } else {
> + /* Use the default "accelerator", tcg */
> + p = "tcg";
> + }
> }
[...]

--
Eduardo


\
 
 \ /
  Last update: 2015-03-02 20:41    [W:0.214 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site