From: Wei Liu <wei.liu2@citrix.com>
To: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: xen-devel@lists.xenproject.org,
Ian Campbell <ian.campbell@citrix.com>,
Wei Liu <wei.liu2@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [PATCH v3 32/32] libxl: allow the creation of HVM domains without a device model.
Date: Wed, 29 Jul 2015 15:50:51 +0100 [thread overview]
Message-ID: <20150729145051.GF5111@zion.uk.xensource.com> (raw)
In-Reply-To: <55B8E685.7060109@citrix.com>
On Wed, Jul 29, 2015 at 04:43:17PM +0200, Roger Pau Monné wrote:
[...]
> >>
> >> It is recommended to accept the default value for new guests. If
> >> diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
> >> index e9a2d26..a6690cf 100644
> >> --- a/tools/libxl/libxl.c
> >> +++ b/tools/libxl/libxl.c
> >> @@ -1590,11 +1590,10 @@ void libxl__destroy_domid(libxl__egc *egc, libxl__destroy_domid_state *dis)
> >>
> >> switch (libxl__domain_type(gc, domid)) {
> >> case LIBXL_DOMAIN_TYPE_HVM:
> >> - if (!libxl_get_stubdom_id(CTX, domid))
> >> - dm_present = 1;
> >> - else
> >> + if (libxl_get_stubdom_id(CTX, domid)) {
> >> dm_present = 0;
> >> - break;
> >> + break;
> >> + }
> >
> > There is a path that dm_present contains garbage.
>
> Please take into account that I've removed the last break in
> LIBXL_DOMAIN_TYPE_HVM, so now the LIBXL_DOMAIN_TYPE_HVM case expands
> into the LIBXL_DOMAIN_TYPE_PV case.
>
Oh yes.
Could use /* fall through */ to explicitly state this behaviour to avoid
confusion and make Coverity happy.
> >> case LIBXL_DOMAIN_TYPE_PV:
> >> pid = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "/local/domain/%d/image/device-model-pid", domid));
> >> dm_present = (pid != NULL);
>
> dm_present is set here for both PV and HVM guests without a stubdom.
>
> >> diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
> >> index f366a09..1444e40 100644
> >> --- a/tools/libxl/libxl_create.c
> >> +++ b/tools/libxl/libxl_create.c
> >> @@ -164,6 +164,8 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
> >> b_info->u.hvm.bios = LIBXL_BIOS_TYPE_ROMBIOS; break;
> >> case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN:
> >> b_info->u.hvm.bios = LIBXL_BIOS_TYPE_SEABIOS; break;
> >> + case LIBXL_DEVICE_MODEL_VERSION_NONE:
> >> + break;
> >> default:return ERROR_INVAL;
> >> }
> >>
> >> @@ -177,6 +179,8 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
> >> if (b_info->u.hvm.bios == LIBXL_BIOS_TYPE_ROMBIOS)
> >> return ERROR_INVAL;
> >> break;
> >> + case LIBXL_DEVICE_MODEL_VERSION_NONE:
> >> + break;
> >> default:abort();
> >> }
> >>
> >> @@ -278,6 +282,9 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
> >> break;
> >> }
> >> break;
> >> + case LIBXL_DEVICE_MODEL_VERSION_NONE:
> >> + b_info->video_memkb = 0;
> >> + break;
> >> case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN:
> >> default:
> >> switch (b_info->u.hvm.vga.kind) {
> >> @@ -945,6 +952,11 @@ static void initiate_domain_create(libxl__egc *egc,
> >> ret = libxl__device_nic_setdefault(gc, &d_config->nics[i], domid);
> >> if (ret) goto error_out;
> >>
> >> + /* HVM guests without a device model only have PV nics. */
> >> + if (d_config->b_info.device_model_version ==
> >> + LIBXL_DEVICE_MODEL_VERSION_NONE)
> >> + d_config->nics[i].nictype = LIBXL_NIC_TYPE_VIF;
> >> +
> >
> > Better to check if users have asked for emulated NIC and bail.
>
> IMHO, I think it would be better to move this to
> libxl__device_nic_setdefault and I will do so in the next version.
Yes, that's better.
Wei.
next prev parent reply other threads:[~2015-07-29 14:51 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-03 11:34 [PATCH v3 00/32] Introduce HVM without dm and new boot ABI Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 01/32] libxc: split x86 HVM setup_guest into smaller logical functions Roger Pau Monne
2015-07-06 10:45 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 02/32] libxc: unify xc_dom_p2m_{host/guest} Roger Pau Monne
2015-07-06 10:49 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 03/32] libxc: introduce the notion of a container type Roger Pau Monne
2015-07-06 12:01 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 04/32] libxc: introduce a domain loader for HVM guest firmware Roger Pau Monne
2015-07-06 12:11 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 05/32] libxc: make arch_setup_meminit a xc_dom_arch hook Roger Pau Monne
2015-07-06 12:23 ` Andrew Cooper
2015-07-27 10:40 ` Roger Pau Monné
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 06/32] libxc: make arch_setup_boot{init/late} xc_dom_arch hooks Roger Pau Monne
2015-07-06 12:27 ` Andrew Cooper
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 07/32] xen/x86: fix arch_set_info_guest for HVM guests Roger Pau Monne
2015-07-06 12:58 ` Andrew Cooper
2015-07-23 10:14 ` Roger Pau Monné
2015-07-10 18:39 ` Konrad Rzeszutek Wilk
2015-07-10 18:47 ` Konrad Rzeszutek Wilk
2015-07-23 10:17 ` Roger Pau Monné
2015-07-13 14:01 ` Jan Beulich
2015-07-23 10:25 ` Roger Pau Monné
2015-07-23 11:29 ` Jan Beulich
2015-07-23 11:41 ` Ian Campbell
2015-07-23 15:10 ` Roger Pau Monné
2015-07-23 15:32 ` Jan Beulich
2015-07-23 15:48 ` Roger Pau Monné
2015-07-23 15:58 ` Jan Beulich
2015-07-23 16:00 ` Ian Campbell
2015-07-23 16:15 ` Andrew Cooper
2015-07-23 16:19 ` Jan Beulich
2015-07-23 16:49 ` Andrew Cooper
2015-07-23 17:06 ` Roger Pau Monné
2015-07-23 16:56 ` Roger Pau Monné
2015-07-23 17:12 ` Andrew Cooper
2015-07-24 8:22 ` Jan Beulich
2015-07-24 9:59 ` Roger Pau Monné
2015-07-24 10:46 ` Jan Beulich
2015-07-24 12:11 ` Roger Pau Monné
2015-07-24 12:44 ` Jan Beulich
2015-07-24 15:26 ` Roger Pau Monné
2015-07-24 15:49 ` Jan Beulich
2015-07-24 16:54 ` Roger Pau Monné
2015-07-24 17:36 ` Konrad Rzeszutek Wilk
2015-07-27 11:55 ` Roger Pau Monné
2015-08-03 16:55 ` Andrew Cooper
2015-08-03 17:31 ` Roger Pau Monné
2015-08-04 18:08 ` Andrew Cooper
2015-08-05 9:53 ` Roger Pau Monné
2015-08-05 15:39 ` Andrew Cooper
2015-08-05 16:40 ` Roger Pau Monné
2015-08-05 16:46 ` Andrew Cooper
2015-08-05 17:11 ` Roger Pau Monné
2015-08-05 19:00 ` Andrew Cooper
2015-08-07 12:15 ` Tim Deegan
2015-08-11 7:26 ` Jan Beulich
2015-07-24 11:11 ` Andrew Cooper
2015-07-24 11:28 ` Ian Campbell
2015-07-24 11:49 ` Jan Beulich
2015-07-24 11:46 ` Jan Beulich
2015-07-24 11:49 ` Roger Pau Monné
2015-07-24 12:41 ` Jan Beulich
2015-07-24 15:28 ` Roger Pau Monné
2015-07-03 11:34 ` [PATCH v3 08/32] libxc: introduce a xc_dom_arch for hvm-3.0-x86_32 guests Roger Pau Monne
2015-07-06 13:40 ` Andrew Cooper
2015-07-03 11:34 ` [PATCH v3 09/32] libxl: switch HVM domain building to use xc_dom_* helpers Roger Pau Monne
2015-07-28 11:22 ` Wei Liu
2015-07-28 14:26 ` Roger Pau Monné
2015-07-28 14:29 ` Wei Liu
2015-07-03 11:34 ` [PATCH v3 10/32] libxc: remove dead HVM building code Roger Pau Monne
2015-07-06 13:46 ` Andrew Cooper
2015-07-23 10:27 ` Roger Pau Monné
2015-07-03 11:34 ` [PATCH v3 11/32] xen/x86: add bitmap of enabled emulated devices Roger Pau Monne
2015-07-06 14:10 ` Andrew Cooper
2015-07-07 7:26 ` Jan Beulich
2015-07-23 10:29 ` Roger Pau Monné
2015-07-03 11:34 ` [PATCH v3 12/32] xen/x86: allow disabling the emulated local apic Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 13/32] xen/x86: allow disabling the emulated HPET Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 14/32] xen/x86: allow disabling the pmtimer Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 15/32] xen/x86: allow disabling the emulated RTC Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 16/32] xen/x86: allow disabling the emulated IO APIC Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 17/32] xen/x86: allow disabling the emulated PIC Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 18/32] xen/x86: allow disabling the emulated pmu Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 19/32] xen/x86: allow disabling the emulated VGA Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 20/32] xen/x86: allow disabling the emulated IOMMU Roger Pau Monne
2015-07-03 11:34 ` [PATCH v3 21/32] xen/x86: allow disabling all emulated devices inside of Xen Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 22/32] elfnotes: intorduce a new PHYS_ENTRY elfnote Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 23/32] libxc: allow creating domains without emulated devices Roger Pau Monne
2015-07-28 11:22 ` Wei Liu
2015-07-03 11:35 ` [PATCH v3 24/32] xen: allow HVM guests to use XENMEM_memory_map Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 25/32] xen/x86: allow HVM guests to use hypercalls to bring up vCPUs Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 26/32] xenconsole: try to attach to PV console if HVM fails Roger Pau Monne
2015-07-14 13:46 ` Stefano Stabellini
2015-07-23 10:30 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 27/32] libxc: change the position of the special pages Roger Pau Monne
2015-07-03 15:36 ` Roger Pau Monné
2015-07-10 19:06 ` Konrad Rzeszutek Wilk
2015-07-23 10:42 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 28/32] libxc/xen: introduce HVM_PARAM_CMDLINE_PFN Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 29/32] libxc/xen: introduce HVM_PARAM_FIRST_FREE_PFN Roger Pau Monne
2015-07-10 19:05 ` Konrad Rzeszutek Wilk
2015-07-23 10:46 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 30/32] libxc/xen: introduce HVM_PARAM_MODLIST_PFN Roger Pau Monne
2015-07-03 11:35 ` [PATCH v3 31/32] libxc: switch xc_dom_elfloader to be used with HVMlite domains Roger Pau Monne
2015-07-10 19:07 ` Konrad Rzeszutek Wilk
2015-07-23 10:48 ` Roger Pau Monné
2015-07-03 11:35 ` [PATCH v3 32/32] libxl: allow the creation of HVM domains without a device model Roger Pau Monne
2015-07-28 11:22 ` Wei Liu
2015-07-29 14:43 ` Roger Pau Monné
2015-07-29 14:50 ` Wei Liu [this message]
2015-07-29 14:58 ` Andrew Cooper
2015-07-03 16:19 ` [PATCH v3 00/32] Introduce HVM without dm and new boot ABI David Vrabel
2015-07-03 16:36 ` Roger Pau Monné
2015-07-10 17:44 ` Konrad Rzeszutek Wilk
2015-07-10 18:01 ` Konrad Rzeszutek Wilk
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