[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1785308
Title:
0x8 excepti
More generally, I think that if you care about getting this test case to
work under QEMU emulation you're going to have to be prepared to dig
into QEMU's internals to debug where we diverge from what the real CPU
does. Our x86 emulation is not very actively maintained and this isn't a
"real world"
I think I'd start by seeing if it fails in both or if they're different.
If they're different then you'd follow the series of exceptions that they each
get
and see where they diverge.
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h
What would be useful information to narrow down the problem? Any
specific kind of logs from running it in TCG and KVM?
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https://bugs.launchpad.net/bugs/1785308
Title:
0x8 exception enc
OK, that's just a cruel test :-)
It'll be interesting to see the difference between TCG and KVM, but with such a
weird test case as that you'll probably need to narrow the problem down more.
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Hi David,
The OS is hitting something undefined. It's built on exploiting the x86
architecture to run computations of the MMU rather than the CPU:
https://github.com/jbangert/trapcc
I've tried it on the 3 most recent versions of QEMU for Windows. I'll give it a
go with KVM and tcg and get ba
Hi Ra,
We'll need a bit more detail to be able to help here.
The fact something works in Bochs but doesn't work in qemu doesn't necessarily
mean it's a qemu bug - for example the OS might be hitting something undefined
or a timing issue; so we'd need some information on how the double page faul
