semantic: 0.165
other: 0.121
graphic: 0.099
device: 0.083
debug: 0.081
performance: 0.073
network: 0.064
PID: 0.063
vnc: 0.053
boot: 0.049
permissions: 0.048
socket: 0.036
files: 0.034
KVM: 0.030
debug: 0.783
other: 0.035
files: 0.026
performance: 0.024
PID: 0.020
device: 0.019
boot: 0.018
semantic: 0.018
network: 0.013
socket: 0.011
vnc: 0.009
graphic: 0.009
KVM: 0.009
permissions: 0.007

interrupt problem x86_64

Hello.
I'm studing the x86_64 arch to port colinux to this new architecture.

For who does not know, colinux is a port of linux that runs on windows NATIVELY. Colinux is
1) a small windows driver
2) a kernel patched
3) some windows user-space application that talk with linux kernel (network, console, ...)

I have written the more internal part of colinux, that is the code that switch between windows and linux.
This is done saving and restore the machine state :
1) CR3
2) IDT
3) registers

The problem I see is that after the switch I see the reboot of my virtual machine.
I would say that the new IDT and/or CR3 is not flushed.
My code is written in asm/C so I can follow the code step by step.
I can say exactly the instruction that is broken.

All my code runs nicely on bochs.
I don't have an x86_64 real PC.

If someone wants to repair this bug .... I'm here.

Paolo Minazzi

Which version of QEMU did you use when you encountered this problem? Can you still reproduce this issue with the latest version of QEMU?

Hello Thomas,
it happens some years ago and now I'm not able to reproduce it.
I'm sorry,
thanks again,
Paolo


OK, thanks a lot for your response ... so let's close this bug now.