[PATCH v2] tools/libxl: Improve videoram setting

[Fabio Fantoni <fantonifabio@tiscali.it>]

[-- Attachment #1.1: Type: text/plain, Size: 2937 bytes --]

tools/libxl: Improve videoram setting

- The minimal videoram setting must be 8 mb.
- Added videoram setting for qemu upstream with cirrus (added in qemu 1.3).
- Updated xl.cfg man.

Signed-off-by: Fabio Fantoni <fabio.fantoni@heliman.it>
---
  docs/man/xl.cfg.pod.5    |   14 +++++---------
  tools/libxl/libxl_dm.c   |    6 ++++++
  tools/libxl/xl_cmdimpl.c |    3 ++-
  3 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/docs/man/xl.cfg.pod.5 b/docs/man/xl.cfg.pod.5
index caba162..9c5cdcd 100644
--- a/docs/man/xl.cfg.pod.5
+++ b/docs/man/xl.cfg.pod.5
@@ -974,19 +974,15 @@ in the B<VFB_SPEC_STRING> for configuring virtual 
frame buffer devices

  Sets the amount of RAM which the emulated video card will contain,
  which in turn limits the resolutions and bit depths which will be
-available. This option is only available when using the B<stdvga>
-option (see below).
+available.
  The default amount of video ram for stdvga is 8MB which is sufficient
-for e.g. 1600x1200 at 32bpp.
+for e.g. 1600x1200 at 32bpp and videoram option is currently working
+only when using the qemu-xen-traditional device-model.

  When using the emulated Cirrus graphics card (B<stdvga=0>)
  the amount of video ram is fixed at 4MB which is sufficient
-for 1024x768 at 32 bpp.
-
-videoram option is currently only available when using the
-qemu-xen-traditional device-model. Upstream qemu-xen device-model
-currently does not support changing the amount of video memory for the
-emulated graphics device.
+for 1024x768 at 32 bpp and videoram option is currently working
+only when using the upstream qemu-xen device-model.

  =item B<stdvga=BOOLEAN>

diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index c036dc1..d719130 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -430,6 +430,12 @@ static char ** 
libxl__build_device_model_args_new(libxl__gc *gc,
              break;
          case LIBXL_VGA_INTERFACE_TYPE_CIRRUS:
              flexarray_vappend(dm_args, "-vga", "cirrus", NULL);
+            if (b_info->video_memkb) {
+                flexarray_vappend(dm_args, "-global",
+                libxl__sprintf(gc, "vga.vram_size_mb=%d",
+                libxl__sizekb_to_mb(b_info->video_memkb)),
+                NULL);
+            }
              break;
          }

diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index e964bf1..2bfbcf4 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -832,7 +832,8 @@ static void parse_config_data(const char *config_source,
      xlu_cfg_get_defbool(config, "localtime", &b_info->localtime, 0);

      if (!xlu_cfg_get_long (config, "videoram", &l, 0))
-        b_info->video_memkb = l * 1024;
+        if ( l > 8 )
+            b_info->video_memkb = l * 1024;

      switch(b_info->type) {
      case LIBXL_DOMAIN_TYPE_HVM:
-- 
1.7.9.5


[-- Attachment #1.2: Firma crittografica S/MIME --]
[-- Type: application/pkcs7-signature, Size: 4510 bytes --]

[-- Attachment #2: Type: text/plain, Size: 126 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel