From: "Chen, Tiejun" <tiejun.chen@intel.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: yang.z.zhang@intel.com, kevin.tian@intel.com, tim@xen.org,
xen-devel@lists.xen.org
Subject: Re: [v7][RFC][PATCH 01/13] xen: RMRR fix
Date: Mon, 27 Oct 2014 10:00:42 +0800 [thread overview]
Message-ID: <544DA74A.4020505@intel.com> (raw)
In-Reply-To: <544A4B7A0200007800041E0D@mail.emea.novell.com>
n 2014/10/24 18:52, Jan Beulich wrote:
>>>> On 24.10.14 at 09:34, <tiejun.chen@intel.com> wrote:
Thanks for your review.
>> 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.
>
> I.e. ignore such accesses? Why?
Yeah. This illegal access isn't allowed but its enough to ignore that
without further protection or punishment.
Or what procedure should be concerned here based on your opinion?
>
>> Now in our case we add a rule:
>> - if p2m_access_n is set we also set this mapping.
>
> Does that not conflict with eventual use mem-access makes of this
> type?
>
In our case, we always initialize these RMRR ranges with p2m_access_n to
make sure we can intercept any illegal access to these range until we
can reset them with p2m_access_rw via set_identity_p2m_entry(d,
base_pfn, p2m_access_rw).
Thanks
Tiejun
next prev parent reply other threads:[~2014-10-27 2:00 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 [this message]
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
2014-10-31 9:10 ` Tim Deegan
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