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From: "Chen, Tiejun" <tiejun.chen@intel.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Wei Liu <wei.liu2@citrix.com>,
	Ian Campbell <ian.campbell@citrix.com>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Ian Jackson <ian.jackson@eu.citrix.com>,
	xen-devel@lists.xen.org, Keir Fraser <keir@xen.org>
Subject: Re: [v9][PATCH 07/16] hvmloader/e820: construct guest e820 table
Date: Fri, 17 Jul 2015 23:54:51 +0800	[thread overview]
Message-ID: <55A9254B.2070900@intel.com> (raw)
In-Reply-To: <55A93BF702000078000928B0@mail.emea.novell.com>

>> +    for ( i = nr-1; i > memory_map.nr_map; i-- )
>
> Before you add memory_map.nr_map, you should be able to iterate
> from 0 to (not inclusive) nr. At least as far as I recall the original
> patch.
>

Sorry, I really don't understand what you want.

Before we add memory_map.nr_map, e820[0, nr) don't include low/high 
memory, right? So sounds you want me to

for ( i = 0 i < memory_map.nr_map; i++ )
{
     if we need to adjust low memory, we just set final low e820 entry;
     if we need to adjust high memory, we just set final high e820 entry;
}

Right? But its impossible to do this since we can't assume 
memory_map.map[low memory] is always prior to memory_map.map[high memory].

If I still follow your way, please don't mind to show a pseudocode help 
me understand what you want.

Thanks
Tiejun

  reply	other threads:[~2015-07-17 15:54 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-17  0:45 [v9][PATCH 00/16] Fix RMRR Tiejun Chen
2015-07-16  6:52 ` [v8][PATCH " Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 01/16] xen: introduce XENMEM_reserved_device_memory_map Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 02/16] xen/vtd: create RMRR mapping Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 03/16] xen/passthrough: extend hypercall to support rdm reservation policy Tiejun Chen
2015-07-16  7:40     ` Jan Beulich
2015-07-16  7:48       ` Chen, Tiejun
2015-07-16  7:58         ` Jan Beulich
2015-07-16 11:09     ` George Dunlap
2015-07-16  6:52   ` [v8][PATCH 04/16] xen: enable XENMEM_memory_map in hvm Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 05/16] hvmloader: get guest memory map into memory_map[] Tiejun Chen
2015-07-16  9:18     ` Jan Beulich
2015-07-16 11:15     ` George Dunlap
2015-07-16  6:52   ` [v8][PATCH 06/16] hvmloader/pci: disable all pci devices conflicting with rdm Tiejun Chen
2015-07-16 11:32     ` George Dunlap
2015-07-16 11:52       ` Chen, Tiejun
2015-07-16 13:02         ` George Dunlap
2015-07-16 13:21           ` Chen, Tiejun
2015-07-16 13:32             ` Jan Beulich
2015-07-16 13:48               ` Chen, Tiejun
2015-07-16 14:54                 ` Jan Beulich
2015-07-16 15:20                   ` Chen, Tiejun
2015-07-16 15:39                     ` George Dunlap
2015-07-16 16:08                       ` Chen, Tiejun
2015-07-16 16:40                         ` George Dunlap
2015-07-16 21:24                           ` Chen, Tiejun
2015-07-16 16:18                       ` George Dunlap
2015-07-16 16:31                         ` George Dunlap
2015-07-16 21:15                         ` Chen, Tiejun
2015-07-17  9:26                           ` George Dunlap
2015-07-17 10:55                             ` Jan Beulich
2015-07-16  6:52   ` [v8][PATCH 07/16] hvmloader/e820: construct guest e820 table Tiejun Chen
2015-07-16 11:47     ` George Dunlap
2015-07-16 13:12       ` Chen, Tiejun
2015-07-16 14:29         ` George Dunlap
2015-07-16 15:04           ` Chen, Tiejun
2015-07-16 15:16             ` George Dunlap
2015-07-16 15:29               ` Chen, Tiejun
2015-07-16 15:33                 ` George Dunlap
2015-07-16 15:42                   ` Chen, Tiejun
2015-07-16  6:52   ` [v8][PATCH 08/16] tools/libxc: Expose new hypercall xc_reserved_device_memory_map Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 09/16] tools: extend xc_assign_device() to support rdm reservation policy Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 10/16] tools: introduce some new parameters to set rdm policy Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 11/16] tools/libxl: detect and avoid conflicts with RDM Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 12/16] tools: introduce a new parameter to set a predefined rdm boundary Tiejun Chen
2015-07-16  6:52   ` [v8][PATCH 13/16] libxl: construct e820 map with RDM information for HVM guest Tiejun Chen
2015-07-16  6:53   ` [v8][PATCH 14/16] xen/vtd: enable USB device assignment Tiejun Chen
2015-07-16  6:53   ` [v8][PATCH 15/16] xen/vtd: prevent from assign the device with shared rmrr Tiejun Chen
2015-07-16  7:42     ` Jan Beulich
2015-07-16  6:53   ` [v8][PATCH 16/16] tools: parse to enable new rdm policy parameters Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 01/16] xen: introduce XENMEM_reserved_device_memory_map Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 02/16] xen/vtd: create RMRR mapping Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 03/16] xen/passthrough: extend hypercall to support rdm reservation policy Tiejun Chen
2015-07-17  6:48   ` Jan Beulich
2015-07-20  1:12   ` Tian, Kevin
2015-07-17  0:45 ` [v9][PATCH 04/16] xen: enable XENMEM_memory_map in hvm Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 05/16] hvmloader: get guest memory map into memory_map[] Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 06/16] hvmloader/pci: disable all pci devices conflicting with rdm Tiejun Chen
2015-07-17 13:59   ` Jan Beulich
2015-07-17 14:24     ` Chen, Tiejun
2015-07-17  0:45 ` [v9][PATCH 07/16] hvmloader/e820: construct guest e820 table Tiejun Chen
2015-07-17  7:40   ` Jan Beulich
2015-07-17  9:09     ` Chen, Tiejun
2015-07-17 10:50       ` Jan Beulich
2015-07-17 15:22         ` Chen, Tiejun
2015-07-17 15:31           ` Jan Beulich
2015-07-17 15:54             ` Chen, Tiejun [this message]
2015-07-17 16:06               ` Jan Beulich
2015-07-17 16:10                 ` Chen, Tiejun
2015-07-18 12:35                 ` George Dunlap
2015-07-20  6:19                   ` Chen, Tiejun
2015-07-17  9:27     ` Chen, Tiejun
2015-07-17 10:53       ` Jan Beulich
2015-07-17  0:45 ` [v9][PATCH 08/16] tools/libxc: Expose new hypercall xc_reserved_device_memory_map Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 09/16] tools: extend xc_assign_device() to support rdm reservation policy Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 10/16] tools: introduce some new parameters to set rdm policy Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 11/16] tools/libxl: detect and avoid conflicts with RDM Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 12/16] tools: introduce a new parameter to set a predefined rdm boundary Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 13/16] libxl: construct e820 map with RDM information for HVM guest Tiejun Chen
2015-07-22 13:55   ` [v8][PATCH 13/16] libxl: construct e820 map with RDM information for HVM guest [and 1 more messages] Ian Jackson
2015-07-17  0:45 ` [v9][PATCH 14/16] xen/vtd: enable USB device assignment Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 15/16] xen/vtd: prevent from assign the device with shared rmrr Tiejun Chen
2015-07-17  0:45 ` [v9][PATCH 16/16] tools: parse to enable new rdm policy parameters Tiejun Chen

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