CN101739289B - Method and device for setting display mode in Linux virtual machine - Google Patents
Method and device for setting display mode in Linux virtual machine Download PDFInfo
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Abstract
The invention discloses a method and a device for setting a display mode in a Linux virtual machine. The method comprises the following steps: initializing the frame buffer description block of the virtual machine; acquiring video memory information of the virtual video card in the virtual machine, wherein the video memory information of the virtual video card comprises the address of the video memory space of the virtual video card and the video memory capacity of the virtual video card; according to the acquired video memory information of the virtual video card, mapping the video memory space of the virtual video card to the memory space of the kernel of the virtual machine; storing the mapping address of the video memory space of the virtual video card in the memory space of the kernel of the virtual machine into the frame buffer description block; and according to the information stored in the frame buffer description block, setting the display mode of the virtual video card by using the input/output read-write command of the register of the virtual video card. The technical scheme of the invention can enable the frame buffer device in the Linux virtual machine to support more display modes.
Description
Technical field
The present invention relates to the virtual machine technique field, particularly relate to a kind of method and device that display mode is set in the Linux virtual machine.
Background technology
Therefore in the embedded development process based on (SuSE) Linux OS, due to the target device resource-constrained of exploitation, set up complete development environment on target device and debugging enironment is all more difficult.At present generally at PC(Personal Computer, personal computer) pass through the method foundation of two computing machine cross compiles in environment for the development environment of target device, can take full advantage of the powerful computing power of PC environment so on the one hand, also carry out the debugging of application program can take full advantage of debugging acid abundant in the PC environment on the other hand.
Virtual machine technique, be a kind of technology of simulating the computer system with complete function by software mode, move virtual machine manager (Virtual Machine Manager, VMM) in the operating system of host, can simulate one or more virtual computing machine, shown in Figure 1.These virtual machines can carry out work as real computing machine, for example can installing operating system, application program, accesses network resource etc.Virtual machine technique is that the program development personnel provide convenience: the developer can use virtual machine manager to fictionalize a computing machine at host, then the source program in host is shared to virtual machine fully, install in virtual machine the required operating system of exploitation and with the development platform cascade.Like this, only need a computing machine, just can complete needs two cross-development work that computing machine just can be completed originally.
In the embedded product exploitation, UI(User Interface, user interface) exploitation of program often occupies certain proportion, and due to display device independently not in embedded product, so the exploitation of UI program need to be completed by the display device in development environment.Framebuffer device in (SuSE) Linux OS (framebuffer) for graphic hardware provides operation-interface, allows application software directly graphic hardware to be read and write under graphic model and waits operation, and drafting and display environment can be provided for the exploitation of UI program.According to the exploitation needs, framebuffer device can be set to different resolution and color depth.
In realizing process of the present invention, the inventor finds that in prior art, there are the following problems at least: under the Linux virtual machine environment, the highest display mode that can use of framebuffer device is 24 of resolution 1024*768, color depths.And in the performance history of reality, some UI program need to be set to higher resolution and color depth (the UI program of for example moving by framebuffer device on HDTV, need to be set to resolution 1360*768 by framebuffer device, color depth is the display mode of 32 true color), owing to providing this display mode for the framebuffer device setting of virtual machine, therefore for the exploitation of this class UI program, still can only complete with two computing machines at present.
Summary of the invention
In view of this, the invention provides a kind of method and device that display mode is set in the Linux virtual machine, more display mode can be provided for the framebuffer device of Linux virtual machine, technical scheme is as follows:
A kind of method that display mode is set in virtual machine comprises:
Frame buffer description block to virtual machine is carried out initialization;
Obtain the video memory information of virtual video card in described virtual machine; The video memory information of described virtual video card comprises: the address in virtual video card video memory space and the video memory of virtual video card size;
According to the video memory information of the virtual video card of obtaining, the video memory spatial mappings of virtual video card is arrived the memory headroom of virtual machine kernel;
With virtual video card video memory space in the video memory information of the mapping address of virtual machine kernel memory headroom and the virtual video card obtained is saved to described frame buffer description block;
According to the information of preserving in described frame buffer description block, the display mode of virtual video card is set by the I/O read write command of virtual video card register.
A kind of device that display mode is set in virtual machine comprises:
Initialization unit is used for the frame buffer description block of virtual machine is carried out initialization;
The virtual video card information acquisition unit is for the video memory information of obtaining described virtual machine virtual video card; The video memory information of described virtual video card comprises: the address in virtual video card video memory space and the video memory of virtual video card size;
Map unit for the video memory information of the virtual video card of obtaining according to described virtual video card information acquisition unit, arrives the video memory spatial mappings of virtual video card the memory headroom of virtual machine kernel;
Storage unit, what be used for that described map unit obtains deposits virtual video card video memory space in the video memory information of the mapping address of virtual machine kernel memory headroom and the virtual video card obtained, is saved in the frame buffer description block that described initialization unit obtains;
The display mode setting unit for the information of preserving in the frame buffer description block according to described storage unit, arranges the display mode of virtual video card by the I/O read write command of virtual video card register.
Above technical scheme can provide for the framebuffer device in the Linux virtual machine more display mode.Compared with prior art, for the higher resolution of needs and the development of color depth, also can realize in virtual machine, so just can use a computing machine to complete the embedded UI program development of high resolving power and high color depth, effectively save cost of development, and improved developer's work efficiency.
Description of drawings
Fig. 1 is existing dummy machine system configuration diagram;
Fig. 2 is the applied development environment configuration diagram of the embodiment of the present invention;
Fig. 3 is the process flow diagram of realizing the inventive method specific embodiment;
Fig. 4 is the embodiment of the present invention arranges the device of display mode in virtual machine structural representation;
Fig. 5 is the structural representation of embodiment of the present invention initialization unit;
Fig. 6 is the another kind of structural representation of the embodiment of the present invention device that display mode is set in virtual machine.
Embodiment
At first the applied development environment framework of the embodiment of the present invention is described, shown in Figure 2.The first operating system is installed on host, then in the first operating system, virtual machine manager is installed, and the second required operating system of exploitation is installed in the computing machine that virtual machine manager fictionalizes.In the first operating system, that source program is fully shared, so that the virtual machine access; Source program catalogue to the first operation systems share under the second operating system of virtual machine articulates, and uses the second virtual operating system to connect development platform.
Host is actual hardware system, and therefore above-mentioned the first operating system can manage and use actual hardware resources such as real physics video cards.And virtual machine can be accessed the physics video card by virtual machine manager, and provide virtual video card (Virtual Display Card) for the second operating system, this virtual video card is equivalent to real graphic hardware for virtual machine, framebuffer device can carry out read-write operation to it.
Below in conjunction with accompanying drawing, embodiment of the present invention are described in detail, in the present embodiment, above-mentioned the second operating system of installing is embodied as (SuSE) Linux OS in virtual machine.
Figure 3 shows that the method flow diagram that display mode is set of the present invention, comprise the following steps:
S101 carries out initialization to the virtual video card in virtual machine.
What install in virtual machine in the present embodiment, is (SuSE) Linux OS.After virtual machine activation, by calling Linux device drives framework function, the virtual video card in virtual machine is carried out initialization.Will come by the register of virtual video card the bus address of configuration virtual video card during initialization, after configuration was completed, the CPU of virtual machine just can access every resource of this equipment.
S102, the initialization frame buffer description block.
The buffered frame description block is in (SuSE) Linux OS, is used for preserving the zone of buffered frame device-dependent message, in the process of using framebuffer device, need to read this part information.At first Linux can be frame buffer description block storage allocation space, confirms to need to preserve which relevant information in the buffered frame description block, and is further these relevant information memory allocated subspaces used.
S103 obtains the display mode information of actual physical video card in host.
By reading the register of virtual video card, obtain the information of actual physical video card in host, mainly comprise the display mode that can support of physics video card.
S104 obtains the video memory information of virtual video card.
Register by the read-write virtual video card obtains virtual video card information, mainly comprises the address in virtual video card video memory space, the information such as the video memory size of virtual video card.
S105 is with the video memory spatial mappings of the virtual video card memory headroom to the virtual machine kernel.
According to virtual video card information accessed in S104, the video memory spatial mappings of virtual video card is arrived the memory headroom of virtual machine kernel.The memory headroom of described virtual machine kernel is to operate in the memory headroom that the application program in virtual machine can directly be accessed.And these application programs direct video memory spaces of accesses virtual video card, after mapping was completed, application program just can be passed through this piece memory headroom of direct read/write kernel, indirectly realize the read-write to virtual video card video memory content.
S106, preservation virtual video card video memory space is at the mapping address of kernel memory headroom in the frame buffer description block.
As described in S102, the buffered frame description block is for the zone of preserving the buffered frame device-dependent message.Here, the mapping address that obtains in preserving S105, the information such as size in the address in the virtual video card video memory space that can also preserve that the front obtains, virtual video card video memory space.
S107, the I/O read write command of crossing the virtual video card register according to the information exchange of preserving in the frame buffer description block arranges the display mode of virtual video card.
By the I/O read write command, resolution, the color depth of virtual video card is set respectively.
Need to prove, be the set display mode of virtual video card, should be to obtain the display mode that the actual physical video card is supported in S103.If the display mode that arranges is not the display mode that the physics video card can be supported, will return to error message so here.
If required setting is the display mode of fixing, for example, for the exploitation of HDTV UI program, 32 of the display mode of HDTV: resolution 1360*768, color depths need to be set.If can determine that the physics video card can support this pattern, so also can omit the step S103 of front.
So far, the display mode setting is completed, and virtual machine can be by sending corresponding information to host, and the notice host has been completed the register setting of virtual video card in virtual machine.Like this, just can be in by read-write the register of the virtual video card under the high definition display mode in virtual machine, obtain the information of preserving in the frame buffer description block, and according to the information in the frame buffer description block, correct pixel operation function being set, application program can be carried out to being in virtual video card under the high definition resolution model operations such as the filling, read-write of pixel by the pixel operation function.
The method that the embodiment of the present invention provides can break through the restriction that existing Linux virtual machine framebuffer device is not supported high resolving power and high color depth, makes the more display mode of framebuffer device support.Compared with prior art, for the higher resolution of needs support and the development of color depth, also can realize in virtual machine, so just can use a computing machine to complete the embedded UI program development of high resolving power and high color depth, effectively save cost of development, and improved developer's work efficiency.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be completed by the hardware that programmed instruction is correlated with, aforesaid program can be stored in a computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Corresponding to top embodiment of the method, the embodiment of the present invention also provides a kind of device that display mode is set in virtual machine, shown in Figure 4, comprising:
Virtual video card information acquisition unit 420 is for the video memory information of obtaining described virtual machine virtual video card; The video memory information of described virtual video card comprises: the address in virtual video card video memory space and the video memory of virtual video card size;
Display mode setting unit 450 for the information of preserving in the frame buffer description block according to described storage unit, arranges the display mode of virtual video card by the I/O read write command of virtual video card register.
Shown in Figure 5, described initialization unit 410 can comprise:
Frame buffer description block Memory Allocation subelement 411 is used to described frame buffer description block storage allocation space;
Shown in Figure 6, this device can also comprise:
Physics video card information acquisition unit 460 is used for obtaining the display mode that the actual physical video card of described virtual machine place host is supported.
If described device comprises physics video card information acquisition unit 460, so described display mode setting unit 450 specifically can comprise checking subelement 451, subelement 452 and prompting subelement 453 are set;
Described checking subelement 451, described checking subelement is used for verifying that whether set display mode is the display mode that the actual physical video card of the virtual machine place host that obtains of described physics video card information acquisition unit 460 is supported;
If so, the described subelement 452 that arranges arranges the display mode of virtual video card by the I/O read write command of virtual video card register;
If not, described prompting subelement 453 prompting error messages.
For device embodiment, substantially corresponding to embodiment of the method, so describe fairly simplely, relevant part gets final product referring to the part explanation of embodiment of the method due to it.Device embodiment described above is only schematic, wherein said unit as the separating component explanation can or can not be also physically to separate, the parts that show as the unit can be or can not be also physical locations, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of module to realize the purpose of the present embodiment scheme.Those of ordinary skills namely can understand and implement in the situation that do not pay performing creative labour.
The above is only the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the method that display mode is set in virtual machine, is characterized in that, comprising:
Virtual video card in virtual machine is carried out initialization;
Frame buffer description block to virtual machine is carried out initialization;
Obtain the video memory information of virtual video card in described virtual machine; The video memory information of described virtual video card comprises: the address in virtual video card video memory space and the video memory of virtual video card size;
According to the video memory information of the virtual video card of obtaining, the video memory spatial mappings of virtual video card is arrived the memory headroom of virtual machine kernel;
With virtual video card video memory space in the video memory information of the mapping address of virtual machine kernel memory headroom and the virtual video card obtained is saved to described frame buffer description block;
According to the information of preserving in described frame buffer description block, the display mode of virtual video card is set by the I/O read write command of virtual video card register.
2. method according to claim 1, is characterized in that, described frame buffer description block to virtual machine is carried out initialization, comprising:
Be described frame buffer description block storage allocation space;
In the memory headroom that distributes, be the information distribution subspace that needs in described buffered frame description block to preserve.
3. method according to claim 1, is characterized in that, the described video memory information of obtaining virtual video card in virtual machine, and specific implementation is:
Register by the read-write virtual video card obtains virtual video card information.
4. method according to claim 1, is characterized in that, described I/O read write command by the virtual video card register also comprises before the display mode of virtual video card is set:
Obtain the display mode that the actual physical video card in the host of described virtual machine place is supported.
5. method according to claim 4, is characterized in that, the described display mode that virtual video card is set by the I/O read write command of virtual video card register comprises:
Verify that whether set display mode is the display mode that the actual physical video card in the host of described virtual machine place is supported; The display mode of virtual video card if so, is set by the I/O read write command of virtual video card register; If not, point out error message.
6. the device that display mode is set in virtual machine, is characterized in that, comprising:
The first initialization unit is carried out initialization to the virtual video card in virtual machine;
The second initialization unit is used for the frame buffer description block of virtual machine is carried out initialization;
The virtual video card information acquisition unit is for the video memory information of obtaining described virtual machine virtual video card; The video memory information of described virtual video card comprises: the address in virtual video card video memory space and the video memory of virtual video card size;
Map unit for the video memory information of the virtual video card of obtaining according to described virtual video card information acquisition unit, arrives the video memory spatial mappings of virtual video card the memory headroom of virtual machine kernel;
Storage unit is used for depositing virtual video card video memory space in the video memory information of the mapping address of virtual machine kernel memory headroom and the virtual video card obtained with what described map unit obtained, is saved in the frame buffer description block that described initialization unit obtains;
The display mode setting unit for the information of preserving in the frame buffer description block according to described storage unit, arranges the display mode of virtual video card by the I/O read write command of virtual video card register.
7. device according to claim 6, is characterized in that, described initialization unit comprises:
Frame buffer description block Memory Allocation subelement is used to described frame buffer description block storage allocation space;
Subelement is distributed in the subspace, is used for the memory headroom in described distribution frame buffer description block Memory Allocation subelement distribution, is the information distribution subspace that needs in described buffered frame description block to preserve.
8. device according to claim 6, is characterized in that, this device also comprises:
Physics video card information acquisition unit is used for obtaining the display mode that the actual physical video card of described virtual machine place host is supported.
9. device according to claim 8, is characterized in that, described display mode setting unit comprises the checking subelement, subelement and prompting subelement are set;
Described checking subelement is used for verifying that whether set display mode is the display mode that the actual physical video card of the virtual machine place host that obtains of described physics video card information acquisition unit is supported;
If so, the described subelement that arranges arranges the display mode of virtual video card by the I/O read write command of virtual video card register;
If not, described prompting subelement prompting error message.
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| CN 200810226526 CN101739289B (en) | 2008-11-13 | 2008-11-13 | Method and device for setting display mode in Linux virtual machine |
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| CN 200810226526 CN101739289B (en) | 2008-11-13 | 2008-11-13 | Method and device for setting display mode in Linux virtual machine |
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| CN101739289B true CN101739289B (en) | 2013-06-19 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243571B (en) * | 2011-07-08 | 2013-01-02 | 西安交通大学 | Embedded Hypervisor-oriented multi-window display virtual operation method |
| CN102708002B (en) * | 2012-05-15 | 2015-03-04 | 曙光信息产业(北京)有限公司 | Display management method of video card in baseboard management controller (BMC) s, and server |
| CN106484632A (en) * | 2015-09-01 | 2017-03-08 | 华耀(中国)科技有限公司 | The method distributing continuous physical memory in linux system user's space |
| CN105630442B (en) * | 2015-12-18 | 2018-11-09 | 上海市共进通信技术有限公司 | The implementation method of virtual display device in Android routers |
| CN107368431B (en) * | 2016-05-11 | 2020-03-31 | 龙芯中科技术有限公司 | Memory access method, cross switch and computer system |
| CN107885653B (en) * | 2016-09-30 | 2020-12-04 | 腾讯科技（深圳）有限公司 | Data processing system, method and device |
| CN106873932B (en) * | 2017-02-17 | 2020-03-03 | 浙江大学 | Android system server side and remote desktop image redirection method and system |
| CN106970786A (en) * | 2017-02-22 | 2017-07-21 | 深信服科技股份有限公司 | The reorientation method and system of display device |
| CN112486609B (en) * | 2020-11-25 | 2022-09-16 | 湖南麒麟信安科技股份有限公司 | Virtual display card implementation method and device based on cloud desktop |
| CN115101025B (en) * | 2022-07-13 | 2023-03-24 | 珠海昇生微电子有限责任公司 | LCD control circuit supporting virtual frame buffering and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924818A (en) * | 2005-08-29 | 2007-03-07 | 英业达股份有限公司 | Protecting method for frame buffer zone state |
| CN101211270A (en) * | 2006-12-31 | 2008-07-02 | 联想(北京)有限公司 | Display card, virtual machine system using same and display processing method |
| CN101241445A (en) * | 2007-02-08 | 2008-08-13 | 联想(北京)有限公司 | Virtual machine system and its method for accessing display card |
-
2008
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924818A (en) * | 2005-08-29 | 2007-03-07 | 英业达股份有限公司 | Protecting method for frame buffer zone state |
| CN101211270A (en) * | 2006-12-31 | 2008-07-02 | 联想(北京)有限公司 | Display card, virtual machine system using same and display processing method |
| CN101241445A (en) * | 2007-02-08 | 2008-08-13 | 联想(北京)有限公司 | Virtual machine system and its method for accessing display card |
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