[Qemu-devel] qemu io stack code approach

[Ata Fatahi baarzi]

hi all

I recently pursued Linux IO stack and dove into kernel source code. that is when a user programm calls read or write syscall some functions will be called to finally make a io request and send it to device drivers and compelete io request.

in this path which is known as Life of IO request i placed some printks in linux kernel and compile and install it then i can see IO requests information in /var/log/syslog.

i totally used This good Post  which done for linux kernel.

know i wanna do some thing like that in qemu to answer these too important questions:

1- what is path of a IO request from a guest os to host os and finally disk? (both siurce code  approach and io stack approach)

2- how qemu determines an IO request is corresponds to which guest os?(if its feasible)

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Best Rega

​r​

ds
Ata Fatahi Baarzi