From: "Chen, Tiejun" <tiejun.chen@intel.com>
To: Tim Deegan <tim@xen.org>
Cc: yang.z.zhang@intel.com, kevin.tian@intel.com,
xen-devel@lists.xen.org, JBeulich@suse.com
Subject: Re: [v7][RFC][PATCH 01/13] xen: RMRR fix
Date: Fri, 31 Oct 2014 10:53:58 +0800 [thread overview]
Message-ID: <5452F9C6.20802@intel.com> (raw)
In-Reply-To: <20141030221521.GA69781@deinos.phlegethon.org>
On 2014/10/31 6:15, Tim Deegan wrote:
> Hi,
>
> At 15:34 +0800 on 24 Oct (1414161264), Tiejun Chen wrote:
>> This series of patches try to reconcile those remaining problems but
>> just post as RFC to ask for any comments to refine everything.
>>
>> The current whole scheme is as follows:
>>
>> 1. Reconcile guest mmio with RMRR in pci_setup
>> 2. Reconcile guest RAM with RMRR in e820 table
>>
>> Then in theory guest wouldn't access any RMRR range.
>>
>> 3. Just initialize all RMRR ranges as p2m_access_n in p2m table:
>> gfn:mfn:p2m_access_n
>
> Please don't use p2m_access for this. It will conflict with other
> users of that interface. Just clear the entries instead (i.e. set to
> p2m_type_invalid). Then you don't need to do this either:
IMO all p2m tables are initialized as invalid.
Furthermore, so I guess you also may agree something discussed between
Jan and me. There Jan think we just reject any attempt to populate these
ranges.
Thanks
Tiejun
>
>> 5. Before we take real device assignment, any access to RMRR may issue
>> ept_handle_violation because of p2m_access_n. Then we just call
>> update_guest_eip() to return.
>
> because the RMRR area will be handled like any other un-backed address.
>
> Cheers,
>
> Tim.
>
next prev parent reply other threads:[~2014-10-31 2:53 UTC|newest]
Thread overview: 180+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-24 7:34 [v7][RFC][PATCH 01/13] xen: RMRR fix Tiejun Chen
2014-10-24 7:34 ` [v7][RFC][PATCH 01/13] introduce XENMEM_reserved_device_memory_map Tiejun Chen
2014-10-24 14:11 ` Jan Beulich
2014-10-27 2:11 ` Chen, Tiejun
2014-10-27 2:18 ` Chen, Tiejun
2014-10-27 9:42 ` Jan Beulich
2014-10-28 2:22 ` Chen, Tiejun
2014-10-27 13:35 ` Julien Grall
2014-10-28 2:35 ` Chen, Tiejun
2014-10-28 10:36 ` Jan Beulich
2014-10-29 0:40 ` Chen, Tiejun
2014-10-29 8:53 ` Jan Beulich
2014-10-30 2:53 ` Chen, Tiejun
2014-10-30 9:10 ` Jan Beulich
2014-10-31 1:03 ` Chen, Tiejun
2014-10-24 7:34 ` [v7][RFC][PATCH 02/13] tools/libxc: introduce hypercall for xc_reserved_device_memory_map Tiejun Chen
2014-10-24 7:34 ` [v7][RFC][PATCH 03/13] tools/libxc: check if modules space is overlapping with reserved device memory Tiejun Chen
2014-10-24 7:34 ` [v7][RFC][PATCH 04/13] hvmloader/util: get reserved device memory maps Tiejun Chen
2014-10-24 14:22 ` Jan Beulich
2014-10-27 3:12 ` Chen, Tiejun
2014-10-27 9:45 ` Jan Beulich
2014-10-28 5:21 ` Chen, Tiejun
2014-10-28 9:48 ` Jan Beulich
2014-10-29 6:54 ` Chen, Tiejun
2014-10-29 9:05 ` Jan Beulich
2014-10-30 5:55 ` Chen, Tiejun
2014-10-30 9:13 ` Jan Beulich
2014-10-31 2:20 ` Chen, Tiejun
2014-10-31 8:14 ` Jan Beulich
2014-11-03 2:22 ` Chen, Tiejun
2014-11-03 8:53 ` Jan Beulich
2014-11-03 9:32 ` Chen, Tiejun
2014-11-03 9:45 ` Jan Beulich
2014-11-03 9:55 ` Chen, Tiejun
2014-11-03 10:02 ` Jan Beulich
2014-11-21 6:26 ` Chen, Tiejun
2014-11-21 7:43 ` Tian, Kevin
2014-11-21 7:54 ` Jan Beulich
2014-11-21 8:01 ` Tian, Kevin
2014-11-21 8:54 ` Chen, Tiejun
2014-11-21 9:33 ` Jan Beulich
2014-10-24 14:27 ` Jan Beulich
2014-10-27 5:07 ` Chen, Tiejun
2014-10-24 7:34 ` [v7][RFC][PATCH 05/13] hvmloader/mmio: reconcile guest mmio with reserved device memory Tiejun Chen
2014-10-24 14:42 ` Jan Beulich
2014-10-27 7:12 ` Chen, Tiejun
2014-10-27 9:56 ` Jan Beulich
2014-10-28 7:11 ` Chen, Tiejun
2014-10-28 9:56 ` Jan Beulich
2014-10-29 7:03 ` Chen, Tiejun
2014-10-29 9:08 ` Jan Beulich
2014-10-30 3:18 ` Chen, Tiejun
2014-10-24 7:34 ` [v7][RFC][PATCH 06/13] hvmloader/ram: check if guest memory is out of reserved device memory maps Tiejun Chen
2014-10-24 14:56 ` Jan Beulich
2014-10-27 8:09 ` Chen, Tiejun
2014-10-27 10:17 ` Jan Beulich
2014-10-28 7:47 ` Chen, Tiejun
2014-10-28 10:06 ` Jan Beulich
2014-10-29 7:43 ` Chen, Tiejun
2014-10-29 9:15 ` Jan Beulich
2014-10-30 3:11 ` Chen, Tiejun
2014-10-30 9:20 ` Jan Beulich
2014-10-31 5:41 ` Chen, Tiejun
2014-10-31 6:21 ` Tian, Kevin
2014-10-31 7:02 ` Chen, Tiejun
2014-10-31 8:20 ` Jan Beulich
2014-11-03 5:49 ` Chen, Tiejun
2014-11-03 8:56 ` Jan Beulich
2014-11-03 9:40 ` Chen, Tiejun
2014-11-03 9:51 ` Jan Beulich
2014-11-03 11:32 ` Chen, Tiejun
2014-11-03 11:43 ` Jan Beulich
2014-11-03 11:58 ` Chen, Tiejun
2014-11-03 12:34 ` Jan Beulich
2014-11-04 5:05 ` Chen, Tiejun
2014-11-04 7:54 ` Jan Beulich
2014-11-05 2:59 ` Chen, Tiejun
2014-11-05 17:00 ` Jan Beulich
2014-11-06 9:28 ` Chen, Tiejun
2014-11-06 10:06 ` Jan Beulich
2014-11-07 10:27 ` Chen, Tiejun
2014-11-07 11:08 ` Jan Beulich
2014-11-11 6:32 ` Chen, Tiejun
2014-11-11 7:49 ` Chen, Tiejun
2014-11-11 9:03 ` Jan Beulich
2014-11-11 9:06 ` Jan Beulich
2014-11-11 9:42 ` Chen, Tiejun
2014-11-11 10:07 ` Jan Beulich
2014-11-12 1:36 ` Chen, Tiejun
2014-11-12 8:37 ` Jan Beulich
2014-11-12 8:45 ` Chen, Tiejun
2014-11-12 9:02 ` Jan Beulich
2014-11-12 9:13 ` Chen, Tiejun
2014-11-12 9:56 ` Jan Beulich
2014-11-12 10:18 ` Chen, Tiejun
2014-11-19 8:17 ` Tian, Kevin
2014-11-20 7:45 ` Tian, Kevin
2014-11-20 8:04 ` Jan Beulich
2014-11-20 8:51 ` Tian, Kevin
2014-11-20 14:40 ` Tian, Kevin
2014-11-20 14:46 ` Jan Beulich
2014-11-20 20:11 ` Konrad Rzeszutek Wilk
2014-11-21 0:32 ` Tian, Kevin
2014-11-12 3:05 ` Chen, Tiejun
2014-11-12 8:55 ` Jan Beulich
2014-11-12 10:18 ` Chen, Tiejun
2014-11-12 10:24 ` Jan Beulich
2014-11-12 10:32 ` Chen, Tiejun
2014-11-13 3:09 ` Chen, Tiejun
2014-11-14 2:21 ` Chen, Tiejun
2014-11-14 8:21 ` Jan Beulich
2014-11-17 7:31 ` Chen, Tiejun
2014-11-17 7:57 ` Chen, Tiejun
2014-11-17 10:05 ` Jan Beulich
2014-11-17 11:08 ` Chen, Tiejun
2014-11-17 11:17 ` Jan Beulich
2014-11-17 11:32 ` Chen, Tiejun
2014-11-17 11:51 ` Jan Beulich
2014-11-18 3:08 ` Chen, Tiejun
2014-11-18 8:01 ` Jan Beulich
2014-11-18 8:16 ` Chen, Tiejun
2014-11-18 9:33 ` Jan Beulich
2014-11-19 1:26 ` Chen, Tiejun
2014-11-20 7:31 ` Jan Beulich
2014-11-20 8:12 ` Chen, Tiejun
2014-11-20 8:59 ` Jan Beulich
2014-11-20 10:28 ` Chen, Tiejun
2014-11-11 8:59 ` Jan Beulich
2014-11-11 9:35 ` Chen, Tiejun
2014-11-11 9:42 ` Jan Beulich
2014-11-11 9:51 ` Chen, Tiejun
2014-10-24 7:34 ` [v7][RFC][PATCH 07/13] xen/x86/p2m: introduce p2m_check_reserved_device_memory Tiejun Chen
2014-10-24 15:02 ` Jan Beulich
2014-10-27 8:50 ` Chen, Tiejun
2014-10-24 7:34 ` [v7][RFC][PATCH 08/13] xen/x86/p2m: set p2m_access_n for reserved device memory mapping Tiejun Chen
2014-10-24 15:11 ` Jan Beulich
2014-10-27 9:05 ` Chen, Tiejun
2014-10-27 10:33 ` Jan Beulich
2014-10-28 8:26 ` Chen, Tiejun
2014-10-28 10:12 ` Jan Beulich
2014-10-29 8:20 ` Chen, Tiejun
2014-10-29 9:20 ` Jan Beulich
2014-10-30 7:39 ` Chen, Tiejun
2014-10-30 9:24 ` Jan Beulich
2014-10-31 2:50 ` Chen, Tiejun
2014-10-31 8:25 ` Jan Beulich
2014-11-03 6:20 ` Chen, Tiejun
2014-11-03 9:00 ` Jan Beulich
2014-11-03 9:51 ` Chen, Tiejun
2014-11-03 10:03 ` Jan Beulich
2014-11-03 11:48 ` Chen, Tiejun
2014-11-03 11:53 ` Jan Beulich
2014-11-04 1:35 ` Chen, Tiejun
2014-11-04 8:02 ` Jan Beulich
2014-11-04 10:41 ` Chen, Tiejun
2014-11-04 11:41 ` Jan Beulich
2014-11-04 11:51 ` Chen, Tiejun
2014-10-24 7:34 ` [v7][RFC][PATCH 09/13] xen/x86/ept: handle reserved device memory in ept_handle_violation Tiejun Chen
2014-10-24 7:34 ` [v7][RFC][PATCH 10/13] xen/x86/p2m: introduce set_identity_p2m_entry Tiejun Chen
2014-10-24 7:34 ` [v7][RFC][PATCH 11/13] xen:vtd: create RMRR mapping Tiejun Chen
2014-10-24 7:34 ` [v7][RFC][PATCH 12/13] xen/vtd: re-enable USB device assignment Tiejun Chen
2014-10-24 7:34 ` [v7][RFC][PATCH 13/13] xen/vtd: group assigned device with RMRR Tiejun Chen
2014-10-24 10:52 ` [v7][RFC][PATCH 01/13] xen: RMRR fix Jan Beulich
2014-10-27 2:00 ` Chen, Tiejun
2014-10-27 9:41 ` Jan Beulich
2014-10-28 8:36 ` Chen, Tiejun
2014-10-28 9:34 ` Jan Beulich
2014-10-28 9:39 ` Razvan Cojocaru
2014-10-29 0:51 ` Chen, Tiejun
2014-10-29 0:48 ` Chen, Tiejun
2014-10-29 2:51 ` Chen, Tiejun
2014-10-29 8:45 ` Jan Beulich
2014-10-30 8:21 ` Chen, Tiejun
2014-10-30 9:07 ` Jan Beulich
2014-10-31 3:11 ` Chen, Tiejun
2014-10-29 8:44 ` Jan Beulich
2014-10-30 2:51 ` Chen, Tiejun
2014-10-30 22:15 ` Tim Deegan
2014-10-31 2:53 ` Chen, Tiejun [this message]
2014-10-31 9:10 ` Tim Deegan
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