Re: [Qemu-devel] Question about softmmu

[Blue Swirl]

Hi,

I'm also suspecting the flushes cause problems in the Sparc system emulator. 
I don't fully understand the difference between various flushes available 
and what is being issued. For example:

1. CPU issues flush instructions to synch I/D caches: NOP?
2. MMU table changes: flush what, TLBs?
3. MMU translation cache flushes: NOP?
4. HW-issued memory access changes memory contents including code, flush 
TBs?

There is also a problem with GDB breakpoints, the debug instructions added 
for the breakpoint aren't removed when deleting the breakpoint. TB 
invalidate is called, but that doesn't work?

About your question, perhaps Qemu should track MMU tables like it does for 
self-modifying code.

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