From: Shannon Zhao <shannon.zhao@linaro.org>
To: Wei Liu <wei.liu2@citrix.com>, Shannon Zhao <zhaoshenglong@huawei.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
ian.jackson@eu.citrix.com, peter.huangpeng@huawei.com,
xen-devel@lists.xen.org, Julien Grall <julien.grall@arm.com>,
boris.ostrovsky@oracle.com
Subject: Re: [PATCH v2 16/17] libxc/xc_dom_arm: Copy ACPI tables to guest space
Date: Tue, 12 Jul 2016 22:42:07 +0800 [thread overview]
Message-ID: <578501BF.2000008@linaro.org> (raw)
In-Reply-To: <20160712113532.GB23866@citrix.com>
On 2016年07月12日 19:35, Wei Liu wrote:
> On Tue, Jul 12, 2016 at 11:47:04AM +0800, Shannon Zhao wrote:
>> >
>> >
>> > On 2016/7/6 18:12, Stefano Stabellini wrote:
>>> > > On Wed, 6 Jul 2016, Julien Grall wrote:
>>>>> > >> > Hi Stefano,
>>>>> > >> >
>>>>> > >> > On 05/07/16 18:13, Stefano Stabellini wrote:
>>>>>>> > >>> > > On Thu, 23 Jun 2016, Julien Grall wrote:
>>>>>>>>> > >>>> > > > On 23/06/2016 04:17, Shannon Zhao wrote:
>>>>>>>>>>> > >>>>> > > > > From: Shannon Zhao <shannon.zhao@linaro.org>
>>>>>>>>>>> > >>>>> > > > >
>>>>>>>>>>> > >>>>> > > > > Copy all the ACPI tables to guest space so that UEFI or guest could
>>>>>>>>>>> > >>>>> > > > > access them.
>>>>>>>>>>> > >>>>> > > > >
>>>>>>>>>>> > >>>>> > > > > Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
>>>>>>>>>>> > >>>>> > > > > ---
>>>>>>>>>>> > >>>>> > > > > tools/libxc/xc_dom_arm.c | 51
>>>>>>>>>>> > >>>>> > > > > ++++++++++++++++++++++++++++++++++++++++++++++++
>>>>>>>>>>> > >>>>> > > > > 1 file changed, 51 insertions(+)
>>>>>>>>>>> > >>>>> > > > >
>>>>>>>>>>> > >>>>> > > > > diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
>>>>>>>>>>> > >>>>> > > > > index 64a8b67..6a0a5b7 100644
>>>>>>>>>>> > >>>>> > > > > --- a/tools/libxc/xc_dom_arm.c
>>>>>>>>>>> > >>>>> > > > > +++ b/tools/libxc/xc_dom_arm.c
>>>>>>>>>>> > >>>>> > > > > @@ -63,6 +63,47 @@ static int setup_pgtables_arm(struct xc_dom_image
>>>>>>>>>>> > >>>>> > > > > *dom)
>>>>>>>>>>> > >>>>> > > > >
>>>>>>>>>>> > >>>>> > > > > /*
>>>>>>>>>>> > >>>>> > > > > ------------------------------------------------------------------------
>>>>>>>>>>> > >>>>> > > > > */
>>>>>>>>>>> > >>>>> > > > >
>>>>>>>>>>> > >>>>> > > > > +static int xc_dom_copy_acpi(struct xc_dom_image *dom)
>>>>>>>>>>> > >>>>> > > > > +{
>>>>>>>>>>> > >>>>> > > > > + int rc, i;
>>>>>>>>>>> > >>>>> > > > > + uint32_t pages_num = ROUNDUP(dom->acpitable_size, XC_PAGE_SHIFT) >>
>>>>>>>>>>> > >>>>> > > > > + XC_PAGE_SHIFT;
>>>>>>>>>>> > >>>>> > > > > + const xen_pfn_t base = GUEST_ACPI_BASE >> XC_PAGE_SHIFT;
>>>>>>>>>>> > >>>>> > > > > + xen_pfn_t *p2m;
>>>>>>>>>>> > >>>>> > > > > + void *acpi_pages;
>>>>>>>>>>> > >>>>> > > > > +
>>>>>>>>>>> > >>>>> > > > > + p2m = malloc(pages_num * sizeof(*p2m));
>>>>>>>>>>> > >>>>> > > > > + for (i = 0; i < pages_num; i++)
>>>>>>>>>>> > >>>>> > > > > + p2m[i] = base + i;
>>>>>>>>>>> > >>>>> > > > > +
>>>>>>>>>>> > >>>>> > > > > + rc = xc_domain_populate_physmap_exact(dom->xch, dom->guest_domid,
>>>>>>>>>>> > >>>>> > > > > + pages_num, 0, 0, p2m);
>>>>>>>>> > >>>> > > >
>>>>>>>>> > >>>> > > > Hmmmm... it looks like this is working because libxl is setting the
>>>>>>>>> > >>>> > > > maximum
>>>>>>>>> > >>>> > > > size of the domain with some slack (1MB). However, I guess the slack was
>>>>>>>>> > >>>> > > > for
>>>>>>>>> > >>>> > > > something else. Wei, Stefano, Ian, can you confirm?
>>>>>>> > >>> > >
>>>>>>> > >>> > > If I recall correctly, the slack is a magic value coming from the
>>>>>>> > >>> > > ancient history of toolstacks.
>>>>> > >> >
>>>>> > >> > Does it mean we would need to update the slack to take into account the ACPI
>>>>> > >> > blob?
>>> > > Yes, we need to take into account the ACPI blob. Probably not in the
>>> > > slack but directly in mam_memkb.
>> > Sorry, I'm not sure understand this. I found the b_info->max_memkb but
>> > didn't find the slack you said. And how to fix this? Update
>> > b_info->max_memkb or the slack?
> Can you calculate the size of your payload and add that to max_memkb?
>
Yeah, but the size will be changed if we change the tables in the future
and this also should consider x86, right?
Thanks,
--
Shannon
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next prev parent reply other threads:[~2016-07-12 14:42 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-23 3:16 [PATCH v2 00/17] Xen ARM DomU ACPI support Shannon Zhao
2016-06-23 3:16 ` [PATCH v2 01/17] libxl/arm: Factor out codes for generating DTB Shannon Zhao
2016-06-23 3:16 ` [PATCH v2 02/17] libxc: Add placeholders for ACPI tables blob and size Shannon Zhao
2016-06-23 3:16 ` [PATCH v2 03/17] libxl/arm: Add a configuration option for ARM DomU ACPI Shannon Zhao
2016-06-23 13:39 ` Stefano Stabellini
2016-06-23 14:34 ` Shannon Zhao
2016-06-27 10:40 ` Julien Grall
2016-07-07 15:30 ` Wei Liu
2016-07-12 3:40 ` Shannon Zhao
2016-07-12 9:22 ` Julien Grall
2016-07-12 11:33 ` Wei Liu
2016-07-12 14:17 ` Shannon Zhao
2016-07-12 14:33 ` Wei Liu
2016-07-12 14:45 ` Shannon Zhao
2016-07-13 7:54 ` Shannon Zhao
2016-07-13 9:20 ` Julien Grall
2016-07-13 9:48 ` Shannon Zhao
2016-07-13 10:03 ` Julien Grall
2016-07-15 8:00 ` Shannon Zhao
2016-07-15 8:07 ` Shannon Zhao
2016-07-18 19:40 ` Stefano Stabellini
2016-07-19 10:40 ` Wei Liu
2016-07-19 10:44 ` Ian Jackson
2016-06-23 15:53 ` Julien Grall
2016-06-23 3:16 ` [PATCH v2 04/17] libxl/arm: prepare for constructing ACPI tables Shannon Zhao
2016-06-23 13:37 ` Stefano Stabellini
2016-06-23 14:23 ` Shannon Zhao
2016-06-23 14:27 ` Stefano Stabellini
2016-06-23 16:18 ` Julien Grall
2016-06-23 3:16 ` [PATCH v2 05/17] libxl/arm: Construct ACPI RSDP table Shannon Zhao
2016-06-23 3:16 ` [PATCH v2 06/17] libxl/arm: Construct ACPI XSDT table Shannon Zhao
2016-06-23 3:16 ` [PATCH v2 07/17] libxl/arm: Construct ACPI GTDT table Shannon Zhao
2016-06-23 15:00 ` Stefano Stabellini
2016-06-23 16:19 ` Julien Grall
2016-06-23 16:26 ` Julien Grall
2016-06-23 16:58 ` Julien Grall
2016-06-27 1:44 ` Shannon Zhao
2016-06-27 10:17 ` Julien Grall
2016-06-29 9:29 ` Shannon Zhao
2016-06-29 9:42 ` Julien Grall
2016-06-29 13:41 ` Shannon Zhao
2016-07-05 16:42 ` Stefano Stabellini
2016-07-06 9:50 ` Julien Grall
2016-07-06 10:16 ` Stefano Stabellini
2016-06-23 3:16 ` [PATCH v2 08/17] libxl/arm: Factor MPIDR computing codes out as a helper Shannon Zhao
2016-06-23 16:29 ` Julien Grall
2016-06-23 3:16 ` [PATCH v2 09/17] libxl/arm: Construct ACPI MADT table Shannon Zhao
2016-06-23 16:36 ` Julien Grall
2016-06-23 3:16 ` [PATCH v2 10/17] libxl/arm: Construct ACPI FADT table Shannon Zhao
2016-06-23 3:16 ` [PATCH v2 11/17] libxl/arm: Construct ACPI DSDT table Shannon Zhao
2016-06-23 14:50 ` Stefano Stabellini
2016-06-23 16:42 ` Julien Grall
2016-06-27 1:50 ` Shannon Zhao
2016-06-23 17:03 ` Julien Grall
2016-06-27 6:01 ` Shannon Zhao
2016-06-27 10:29 ` Julien Grall
2016-06-27 12:05 ` Boris Ostrovsky
2016-06-28 11:03 ` Shannon Zhao
2016-06-28 13:41 ` Boris Ostrovsky
2016-06-29 18:58 ` Boris Ostrovsky
2016-07-01 7:58 ` Shannon Zhao
2016-07-01 10:18 ` Julien Grall
2016-07-01 14:42 ` Boris Ostrovsky
2016-07-01 15:14 ` Julien Grall
2016-06-23 3:16 ` [PATCH v2 12/17] libxl/arm: Add a helper to calculate the ACPI table checksum Shannon Zhao
2016-06-23 17:05 ` Julien Grall
2016-06-23 3:17 ` [PATCH v2 13/17] libxl/arm: Link all ACPI tables into one buffer Shannon Zhao
2016-06-23 17:10 ` Julien Grall
2016-06-23 3:17 ` [PATCH v2 14/17] libxl/arm: Factor finalise_one_memory_node as a gerneric function Shannon Zhao
2016-06-23 3:17 ` [PATCH v2 15/17] libxl/arm: Add ACPI module Shannon Zhao
2016-06-23 18:35 ` Julien Grall
2016-06-25 3:22 ` Shannon Zhao
2016-06-27 9:48 ` Julien Grall
2016-06-23 3:17 ` [PATCH v2 16/17] libxc/xc_dom_arm: Copy ACPI tables to guest space Shannon Zhao
2016-06-23 18:46 ` Julien Grall
2016-06-27 6:25 ` Shannon Zhao
2016-06-27 10:49 ` Julien Grall
2016-06-27 12:11 ` Boris Ostrovsky
2016-07-05 17:13 ` Stefano Stabellini
2016-07-06 9:46 ` Julien Grall
2016-07-06 10:12 ` Stefano Stabellini
2016-07-12 3:47 ` Shannon Zhao
2016-07-12 9:25 ` Julien Grall
2016-07-12 11:35 ` Wei Liu
2016-07-12 14:42 ` Shannon Zhao [this message]
2016-07-12 14:50 ` Wei Liu
2016-07-12 14:57 ` Shannon Zhao
2016-07-12 15:08 ` Boris Ostrovsky
2016-07-12 15:13 ` Wei Liu
2016-07-12 15:21 ` Boris Ostrovsky
2016-07-12 16:05 ` Wei Liu
2016-07-12 16:10 ` Julien Grall
2016-07-12 16:58 ` Boris Ostrovsky
2016-07-13 15:22 ` Julien Grall
2016-07-13 17:08 ` Boris Ostrovsky
2016-07-14 11:15 ` Wei Liu
2016-07-15 9:39 ` Shannon Zhao
2016-07-19 10:38 ` Wei Liu
2016-07-20 6:52 ` Shannon Zhao
2016-07-20 9:32 ` Wei Liu
2016-07-25 7:56 ` Shannon Zhao
2016-07-28 11:10 ` Julien Grall
2016-07-14 11:29 ` Julien Grall
2016-07-14 13:37 ` Stefano Stabellini
2016-07-20 12:33 ` Julien Grall
2016-07-20 13:33 ` Boris Ostrovsky
2016-07-20 13:41 ` Julien Grall
2016-07-20 14:09 ` Boris Ostrovsky
2016-07-20 17:28 ` Stefano Stabellini
2016-07-20 19:51 ` Boris Ostrovsky
2016-07-21 17:53 ` Stefano Stabellini
2016-07-21 18:23 ` Julien Grall
2016-07-21 18:54 ` Stefano Stabellini
2016-07-21 19:14 ` Julien Grall
2016-07-21 21:15 ` Stefano Stabellini
2016-07-25 8:38 ` George Dunlap
2016-07-25 9:46 ` Julien Grall
2016-07-25 22:06 ` Stefano Stabellini
2016-07-25 22:46 ` Boris Ostrovsky
2016-07-25 23:40 ` Stefano Stabellini
2016-07-26 1:17 ` Boris Ostrovsky
2016-07-28 11:06 ` Julien Grall
2016-07-28 12:42 ` Shannon Zhao
2016-08-02 11:01 ` Wei Liu
2016-08-03 19:20 ` Julien Grall
2016-08-04 10:17 ` Wei Liu
2016-08-02 11:01 ` Wei Liu
2016-07-07 15:35 ` Wei Liu
2016-06-23 3:17 ` [PATCH v2 17/17] libxl/arm: Initialize domain param HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-06-23 18:48 ` Julien Grall
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