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Re: [Qemu-devel] Tracing guest virtual addresses


From: Peter Maydell
Subject: Re: [Qemu-devel] Tracing guest virtual addresses
Date: Tue, 20 Jun 2017 12:13:00 +0100

On 20 June 2017 at 12:02, Lluís Vilanova <address@hidden> wrote:
> Jayanto Minocha writes:
>> But that is only used to instrument the cpu_ld/cpu_st macros, which is only
>> called in the case of a tlb miss.
>
>> I've been going over the archives, and it looks like I need to instrument
>> tcg_out_tlb_load. Am I on the right path ?
>
> That event should trace all guest memory accesses performed by the CPU. If you
> found any case where this does not hold, it is likely a bug and I'd appreciate
> it if you can point me to the smallest possible failing example.

Does it catch memory accesses that are performed via helper functions,
or only ones done by inline TCG code?

thanks
-- PMM



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