vm-kernel

After several days working, the 2.6.34-rc2 kernel is working on gdium expect sound. Of course most of the codes are from mandriva and Philippe's work.
I will make some code clean and make the sound work in the next few days. It seems the sm501 sound driver needs a hardcoded 8051 firmware to work. Damn it. [...]

NOTICE/TIPS:
[For one want to install the debian 6.0, there is a more easy way. See the following link.
http://www.anheng.com.cn/loongson/install/readme.txt (In Chinese).]
Yesterday I installed the debian lenny on yeeloong 8101, the 10.1 inch notebook based on loongson 2F CPU for a friend. Then I find there is less English document describing how to do this. So I [...]

For someone who is interested in OS and micro-kernel especially L4.
Part 1:

Part 2:

Some friends ask me about the performance of loongson2f. They want to know whether the performance of loongson 2f can surpass Marvell Sheeva CPU. Well I can not just say it's better or worse without giving the benchmark data.
Since there is a benchmark result of Marvell Sheeva CPU, we can run the same benchmark program [...]

It's really a long time since last post. Now I am working on the android mips porting project. I want to run android on the MIPS emulator.
The problem is that when I run mips-android on qemu, it hangs when executing init program in the initramfs root file-system. Then I use the remote gdb to debug [...]

In qemu there is an amazing feature – memory watchpoint. It can watch all the memory access including memory read, write or both of them. When guest os/application touches the memory region watched by qemu, a registered function will be called and you can do everything as you want in this function. The gdb stub [...]

Qemu uses softmmu to accelerate the process of finding the mapping between guest physical address and host virtual address and the mapping between guest I/O region and qemu I/O emulation functions. In this article, I assume the guest page table size is 4K.
1. the two level guest physical page descriptor table
Qemu uses a two level [...]

In qemu, there are two different meanings of target. The first meaning of ‘target’ means the emulated target machine architecture. For example, when emulating mips machine on x86, the target is mips and host is x86. However, in tcg(tiny code generator), target has a different meaning. It means the generated binary architecture. In the example [...]

Hi guys, it is about one month since posting last blog entry. These days I am really very busy preparing the GRE and Tofel test. Moreover I have to work to support my life. So I have to spend less time on qemu-loongson.
Anyway, there are progress these days.

Rewrite the GPIO I2C emulation for gdium. [...]

I write this article because some guys are talking about it in CLF. The question is: what is the difference between the two following definitions:
A. const char temp[]="abc";
B. const char *temp="abc";

You may have your own answer already. But wait a moment, let me write some test cases first and you can see whether your answer [...]