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Re: [Qemu-devel] [PATCH 2/2] libxl: introduce gfx_passthru_kind
From: |
Wei Liu |
Subject: |
Re: [Qemu-devel] [PATCH 2/2] libxl: introduce gfx_passthru_kind |
Date: |
Fri, 6 Mar 2015 12:59:02 +0000 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Fri, Mar 06, 2015 at 05:18:36PM +0800, Chen, Tiejun wrote:
> On 2015/3/6 17:08, Tiejun Chen wrote:
> >Although we already have 'gfx_passthru' in b_info, this doesn' suffice
> >after we want to handle IGD specifically. Now we define a new field of
> >type, gfx_passthru_kind, to indicate we're trying to pass IGD. Actually
> >this means we can benefit this to support other specific devices just
> >by extending gfx_passthru_kind. And then we can cooperate with
> >gfx_passthru to address IGD cases as follows:
> >
> > gfx_passthru = 0 => sets build_info.u.gfx_passthru to false
> > gfx_passthru = 1 => sets build_info.u.gfx_passthru to false and
> > build_info.u.gfx_passthru_kind to DEFAULT
> > gfx_passthru = "igd" => sets build_info.u.gfx_passthru to false
> > and build_info.u.gfx_passthru_kind to IGD
> >
> >Here if gfx_passthru_kind = DEFAULT, we will call
> >libxl__is_igd_vga_passthru() to check if we're hitting that table to need
> >to pass that option to qemu. But if gfx_passthru_kind = "igd" we always
> >force to pass that.
> >
> >Signed-off-by: Tiejun Chen <address@hidden>
> >---
> > tools/libxl/libxl_dm.c | 13 +++++++++++++
> > tools/libxl/libxl_types.idl | 6 ++++++
> > tools/libxl/xl_cmdimpl.c | 19 +++++++++++++++++--
> > 3 files changed, 36 insertions(+), 2 deletions(-)
> >
> >diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
> >index 8599a6a..780dd2a 100644
> >--- a/tools/libxl/libxl_dm.c
> >+++ b/tools/libxl/libxl_dm.c
>
> Sorry, looks I'm missing to remove '-gfx_passthru' since this should be gone
> in the case of qemu upstream,
>
> @@ -710,9 +710,6 @@ static char **
> libxl__build_device_model_args_new(libxl__gc *gc,
> flexarray_append(dm_args, "-net");
> flexarray_append(dm_args, "none");
> }
> - if (libxl_defbool_val(b_info->u.hvm.gfx_passthru)) {
> - flexarray_append(dm_args, "-gfx_passthru");
> - }
> } else {
> if (!sdl && !vnc) {
> flexarray_append(dm_args, "-nographic");
>
> I will fold this into next revision after this review.
>
I think this change alone warrants a separate changeset. It should be
patch 0 of your series as a preparatory patch. Please remember to
elaborate in commit message why that hunk is not needed in upstream
QEMU.
Wei.
Re: [Qemu-devel] [PATCH 2/2] libxl: introduce gfx_passthru_kind, Wei Liu, 2015/03/06
Re: [Qemu-devel] [PATCH 2/2] libxl: introduce gfx_passthru_kind, Ian Campbell, 2015/03/11
Re: [Qemu-devel] [PATCH 0/2] libxl: try to support IGD passthrough for qemu upstream, Wei Liu, 2015/03/06
Re: [Qemu-devel] [Xen-devel] [PATCH 0/2] libxl: try to support IGD passthrough for qemu upstream, Konrad Rzeszutek Wilk, 2015/03/06