From: Sergej Proskurin <proskurin@sec.in.tum.de>
To: Wei Liu <wei.liu2@citrix.com>
Cc: xen-devel@lists.xen.org
Subject: Re: [PATCH 16/18] arm/altp2m: Extended libxl to activate altp2m on ARM.
Date: Mon, 25 Jul 2016 11:04:13 +0200 [thread overview]
Message-ID: <dda8977b-0544-aab4-7200-b81b4635a687@sec.in.tum.de> (raw)
In-Reply-To: <20160725083248.GS927@citrix.com>
Hi Wei,
On 07/25/2016 10:32 AM, Wei Liu wrote:
> On Sun, Jul 24, 2016 at 06:06:00PM +0200, Sergej Proskurin wrote:
>> Hi Wei,
>>
>> On 07/07/2016 06:27 PM, Wei Liu wrote:
>>> On Mon, Jul 04, 2016 at 01:45:45PM +0200, Sergej Proskurin wrote:
>>>> The current implementation allows to set the parameter HVM_PARAM_ALTP2M.
>>>> This parameter allows further usage of altp2m on ARM. For this, we
>>>> define an additional altp2m field for PV domains as part of the
>>>> libxl_domain_type struct. This field can be set only on ARM systems
>>>> through the "altp2m" switch in the domain's configuration file (i.e.
>>>> set altp2m=1).
>>>>
>>>> Signed-off-by: Sergej Proskurin <proskurin@sec.in.tum.de>
>>>> ---
>>>> Cc: Ian Jackson <ian.jackson@eu.citrix.com>
>>>> Cc: Wei Liu <wei.liu2@citrix.com>
>>>> ---
>>>> tools/libxl/libxl_create.c | 1 +
>>>> tools/libxl/libxl_dom.c | 14 ++++++++++++++
>>>> tools/libxl/libxl_types.idl | 1 +
>>>> tools/libxl/xl_cmdimpl.c | 5 +++++
>>>> 4 files changed, 21 insertions(+)
>>>>
>>>> diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
>>>> index 1b99472..40b5f61 100644
>>>> --- a/tools/libxl/libxl_create.c
>>>> +++ b/tools/libxl/libxl_create.c
>>>> @@ -400,6 +400,7 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
>>>> b_info->cmdline = b_info->u.pv.cmdline;
>>>> b_info->u.pv.cmdline = NULL;
>>>> }
>>>> + libxl_defbool_setdefault(&b_info->u.pv.altp2m, false);
>>>> break;
>>>> default:
>>>> LOG(ERROR, "invalid domain type %s in create info",
>>>> diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
>>>> index ec29060..ab023a2 100644
>>>> --- a/tools/libxl/libxl_dom.c
>>>> +++ b/tools/libxl/libxl_dom.c
>>>> @@ -277,6 +277,16 @@ err:
>>>> }
>>>> #endif
>>>>
>>>> +#if defined(__arm__) || defined(__aarch64__)
>>>> +static void pv_set_conf_params(xc_interface *handle, uint32_t domid,
>>>> + libxl_domain_build_info *const info)
>>>> +{
>>>> + if ( libxl_defbool_val(info->u.pv.altp2m) )
>>> Coding style.
>>>
>> I am not sure which part does not fulfill Xen's coding style. Could you
>> be more specific please? Thank you.
>>
> There is a CODING_STYLE file in libxl as well. The coding style in
> tools/ is generally different from the coding style in hypervisor with
> the exception of libxc.
>
> Sorry for being too terse on this. Do ask questions! :-)
It's all good, no worries :) Thank you for the hint (it must be the
indentation inside the if-clause brackets). I was still in the Xen
coding style, when I wrote this part: Now, I know better, thank you :)
>>>> + xc_hvm_param_set(handle, domid, HVM_PARAM_ALTP2M,
>>>> + libxl_defbool_val(info->u.pv.altp2m));
>>>> +}
>>>> +#endif
>>>> +
>>>> static void hvm_set_conf_params(xc_interface *handle, uint32_t domid,
>>>> libxl_domain_build_info *const info)
>>>> {
>>>> @@ -433,6 +443,10 @@ int libxl__build_pre(libxl__gc *gc, uint32_t domid,
>>>> return rc;
>>>> #endif
>>>> }
>>>> +#if defined(__arm__) || defined(__aarch64__)
>>>> + else /* info->type == LIBXL_DOMAIN_TYPE_PV */
>>>> + pv_set_conf_params(ctx->xch, domid, info);
>>>> +#endif
>>>>
>>>> rc = libxl__arch_domain_create(gc, d_config, domid);
>>>>
>>>> diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
>>>> index ef614be..0a164f9 100644
>>>> --- a/tools/libxl/libxl_types.idl
>>>> +++ b/tools/libxl/libxl_types.idl
>>>> @@ -554,6 +554,7 @@ libxl_domain_build_info = Struct("domain_build_info",[
>>>> ("features", string, {'const': True}),
>>>> # Use host's E820 for PCI passthrough.
>>>> ("e820_host", libxl_defbool),
>>>> + ("altp2m", libxl_defbool),
>>> Why is this placed in PV instead of arch_arm?
>>>
>> The current implementation mirrors the x86's altp2m, where the altp2m
>> field represents a property of HVM guests in b_info->u.hvm.altp2m. Since
>> guests on ARM are marked as PV, I have placed the field altp2m into
>> b_info->u.pv.altp2m.
>>
>> However, if you believe that it would make more sense to place altp2m
>> into b_info->arch_arm.altp2m, I will try to adapt the affected fields.
>>
> OK. I don't think that one should be placed in u.pv because that union
> is for x86. However it is also not suitable to just promote that to
> a common field because x86 pv doesn't have altp2m support.
>
> I think arch_arm would be a better location.
>
Alright, I will move the field altp2m to arch_arm and adopt the
initialization routines.
>>> You would also need a LIBXL_HAVE macro in libxl.h for the new field.
>>>
>> There is already a LIBXL_HAVE_ALTP2M macro defined in libxl.h. Or did
>> you mean using an explicit one for ARM?
>>
> Yes, we need a new one for ARM.
>
Ok. I will provide a LIBXL_HAVE_ARM_ALTP2M macro.
Thank you.
Best regards,
~Sergej
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next prev parent reply other threads:[~2016-07-25 9:04 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-04 11:45 [PATCH 00/18] arm/altp2m: Introducing altp2m to ARM Sergej Proskurin
2016-07-04 11:45 ` [PATCH 01/18] arm/altp2m: Add cmd-line support for altp2m on ARM Sergej Proskurin
2016-07-04 12:15 ` Andrew Cooper
2016-07-04 13:02 ` Sergej Proskurin
2016-07-04 13:25 ` Julien Grall
2016-07-04 13:43 ` Sergej Proskurin
2016-07-04 17:42 ` Julien Grall
2016-07-04 17:56 ` Tamas K Lengyel
2016-07-04 21:08 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 02/18] arm/altp2m: Add first altp2m HVMOP stubs Sergej Proskurin
2016-07-04 13:36 ` Julien Grall
2016-07-04 13:51 ` Sergej Proskurin
2016-07-05 10:19 ` Julien Grall
2016-07-06 9:14 ` Sergej Proskurin
2016-07-06 13:43 ` Julien Grall
2016-07-06 15:23 ` Tamas K Lengyel
2016-07-06 15:54 ` Julien Grall
2016-07-06 16:05 ` Tamas K Lengyel
2016-07-06 16:29 ` Julien Grall
2016-07-06 16:35 ` Tamas K Lengyel
2016-07-06 18:35 ` Julien Grall
2016-07-07 9:14 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 03/18] arm/altp2m: Add HVMOP_altp2m_get_domain_state Sergej Proskurin
2016-07-04 11:45 ` [PATCH 04/18] arm/altp2m: Add altp2m init/teardown routines Sergej Proskurin
2016-07-04 15:17 ` Julien Grall
2016-07-04 16:40 ` Sergej Proskurin
2016-07-04 16:43 ` Andrew Cooper
2016-07-04 16:56 ` Sergej Proskurin
2016-07-04 17:44 ` Julien Grall
2016-07-04 21:19 ` Sergej Proskurin
2016-07-04 21:35 ` Julien Grall
2016-07-04 21:46 ` Sergej Proskurin
2016-07-04 18:18 ` Julien Grall
2016-07-04 21:37 ` Sergej Proskurin
2016-07-04 18:30 ` Julien Grall
2016-07-04 21:56 ` Sergej Proskurin
2016-07-04 16:15 ` Julien Grall
2016-07-04 16:51 ` Sergej Proskurin
2016-07-04 18:34 ` Julien Grall
2016-07-05 7:45 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 05/18] arm/altp2m: Add HVMOP_altp2m_set_domain_state Sergej Proskurin
2016-07-04 15:39 ` Julien Grall
2016-07-05 8:45 ` Sergej Proskurin
2016-07-05 10:11 ` Julien Grall
2016-07-05 12:05 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 06/18] arm/altp2m: Add a(p2m) table flushing routines Sergej Proskurin
2016-07-04 12:12 ` Sergej Proskurin
2016-07-04 15:42 ` Julien Grall
2016-07-05 8:52 ` Sergej Proskurin
2016-07-04 15:55 ` Julien Grall
2016-07-05 9:51 ` Sergej Proskurin
2016-07-04 16:20 ` Julien Grall
2016-07-05 9:57 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 07/18] arm/altp2m: Add HVMOP_altp2m_create_p2m Sergej Proskurin
2016-07-04 11:45 ` [PATCH 08/18] arm/altp2m: Add HVMOP_altp2m_destroy_p2m Sergej Proskurin
2016-07-04 16:32 ` Julien Grall
2016-07-05 11:37 ` Sergej Proskurin
2016-07-05 11:48 ` Julien Grall
2016-07-05 12:18 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 09/18] arm/altp2m: Add HVMOP_altp2m_switch_p2m Sergej Proskurin
2016-07-04 11:45 ` [PATCH 10/18] arm/altp2m: Renamed and extended p2m_alloc_table Sergej Proskurin
2016-07-04 18:43 ` Julien Grall
2016-07-05 13:56 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 11/18] arm/altp2m: Make flush_tlb_domain ready for altp2m Sergej Proskurin
2016-07-04 12:30 ` Sergej Proskurin
2016-07-04 20:32 ` Julien Grall
2016-07-05 14:48 ` Sergej Proskurin
2016-07-05 15:37 ` Julien Grall
2016-07-05 20:21 ` Sergej Proskurin
2016-07-06 14:28 ` Julien Grall
2016-07-06 14:39 ` Sergej Proskurin
2016-07-07 17:24 ` Julien Grall
2016-07-04 11:45 ` [PATCH 12/18] arm/altp2m: Cosmetic fixes - function prototypes Sergej Proskurin
2016-07-15 13:45 ` Julien Grall
2016-07-16 15:18 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 13/18] arm/altp2m: Make get_page_from_gva ready for altp2m Sergej Proskurin
2016-07-04 20:34 ` Julien Grall
2016-07-05 20:31 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 14/18] arm/altp2m: Add HVMOP_altp2m_set_mem_access Sergej Proskurin
2016-07-05 12:49 ` Julien Grall
2016-07-05 21:55 ` Sergej Proskurin
2016-07-06 14:32 ` Julien Grall
2016-07-06 16:12 ` Tamas K Lengyel
2016-07-06 16:59 ` Julien Grall
2016-07-06 17:03 ` Sergej Proskurin
2016-07-06 17:08 ` Julien Grall
2016-07-07 9:16 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 15/18] arm/altp2m: Add altp2m paging mechanism Sergej Proskurin
2016-07-04 20:53 ` Julien Grall
2016-07-06 8:33 ` Sergej Proskurin
2016-07-06 14:26 ` Julien Grall
2016-07-04 11:45 ` [PATCH 16/18] arm/altp2m: Extended libxl to activate altp2m on ARM Sergej Proskurin
2016-07-07 16:27 ` Wei Liu
2016-07-24 16:06 ` Sergej Proskurin
2016-07-25 8:32 ` Wei Liu
2016-07-25 9:04 ` Sergej Proskurin [this message]
2016-07-25 9:49 ` Julien Grall
2016-07-25 10:08 ` Wei Liu
2016-07-25 11:26 ` Sergej Proskurin
2016-07-25 11:37 ` Wei Liu
2016-07-04 11:45 ` [PATCH 17/18] arm/altp2m: Adjust debug information to altp2m Sergej Proskurin
2016-07-04 20:58 ` Julien Grall
2016-07-06 8:41 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 18/18] arm/altp2m: Extend xen-access for altp2m on ARM Sergej Proskurin
2016-07-04 13:38 ` Razvan Cojocaru
2016-07-06 8:44 ` Sergej Proskurin
2016-07-04 11:45 ` [PATCH 01/18] arm/altp2m: Add cmd-line support " Sergej Proskurin
2016-07-04 11:45 ` [PATCH 02/18] arm/altp2m: Add first altp2m HVMOP stubs Sergej Proskurin
2016-07-04 11:45 ` [PATCH 03/18] arm/altp2m: Add HVMOP_altp2m_get_domain_state Sergej Proskurin
2016-07-04 11:45 ` [PATCH 04/18] arm/altp2m: Add altp2m init/teardown routines Sergej Proskurin
2016-07-04 11:45 ` [PATCH 05/18] arm/altp2m: Add HVMOP_altp2m_set_domain_state Sergej Proskurin
2016-07-04 11:45 ` [PATCH 06/18] arm/altp2m: Add a(p2m) table flushing routines Sergej Proskurin
2016-07-04 11:45 ` [PATCH 07/18] arm/altp2m: Add HVMOP_altp2m_create_p2m Sergej Proskurin
2016-07-04 11:45 ` [PATCH 08/18] arm/altp2m: Add HVMOP_altp2m_destroy_p2m Sergej Proskurin
2016-07-04 11:45 ` [PATCH 09/18] arm/altp2m: Add HVMOP_altp2m_switch_p2m Sergej Proskurin
2016-07-04 11:45 ` [PATCH 10/18] arm/altp2m: Renamed and extended p2m_alloc_table Sergej Proskurin
2016-07-04 11:45 ` [PATCH 11/18] arm/altp2m: Make flush_tlb_domain ready for altp2m Sergej Proskurin
2016-07-04 11:45 ` [PATCH 12/18] arm/altp2m: Cosmetic fixes - function prototypes Sergej Proskurin
2016-07-04 11:46 ` [PATCH 13/18] arm/altp2m: Make get_page_from_gva ready for altp2m Sergej Proskurin
2016-07-04 11:46 ` [PATCH 14/18] arm/altp2m: Add HVMOP_altp2m_set_mem_access Sergej Proskurin
2016-07-04 11:46 ` [PATCH 15/18] arm/altp2m: Add altp2m paging mechanism Sergej Proskurin
2016-07-04 11:46 ` [PATCH 16/18] arm/altp2m: Extended libxl to activate altp2m on ARM Sergej Proskurin
2016-07-04 11:46 ` [PATCH 17/18] arm/altp2m: Adjust debug information to altp2m Sergej Proskurin
2016-07-04 11:46 ` [PATCH 18/18] arm/altp2m: Extend xen-access for altp2m on ARM Sergej Proskurin
2016-07-04 12:52 ` [PATCH 00/18] arm/altp2m: Introducing altp2m to ARM Andrew Cooper
2016-07-04 13:05 ` Sergej Proskurin
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