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Re: [Qemu-devel] TCG icount interaction with timer deadlines
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] TCG icount interaction with timer deadlines |
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Date: |
Thu, 5 Apr 2018 19:07:58 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 |
On 05/04/2018 18:01, Peter Maydell wrote:
> * however, if the guest reprograms the clock during the tcg_cpu_exec()
> run, we don't do anything to cause us to stop earlier
Anything that does this from the vCPU thread should be between
gen_icount_start and gen_icount_end. (In fact, it's the entire reason
why cpu_io_recompile exists).
For completeness, if the I/O thread does it, it should (in icount mode
only) kick the running VCPU.
Am I missing something?
Paolo