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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5295 c046a42c-6fe2-441c-8c8c-71466251a162
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Raise UDC (Unexpected Disconnect) when a large enough number of
instructions has been executed by the SCRIPTS processor. This "solution"
is much simpler than temporarily interrupting execution.
This remedies the situation with Windows which downloads SCRIPTS code
that busy loops on guest main memory. Their drivers _do_ handle UDC
appropriately (at least XP and 2003).
It would be nicer to actually detect infinite loops, but until then,
this bandaid seems acceptable.
Since the situation seems to be rare enough, raise the number
of instructions to 10000 (previously 1000).
Three people other than myself had success with this patch.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5293 c046a42c-6fe2-441c-8c8c-71466251a162
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2635 c046a42c-6fe2-441c-8c8c-71466251a162
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1946 c046a42c-6fe2-441c-8c8c-71466251a162
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