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Re: [Qemu-devel] [PATCH 11/10] tcg: comment on which functions have to b


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH 11/10] tcg: comment on which functions have to be called with tb_lock held
Date: Thu, 13 Aug 2015 16:32:35 +0100

On 13 August 2015 at 15:39, Paolo Bonzini <address@hidden> wrote:
> TBs are physically-tagged so invalidates are not too frequent unless the
> guest does self-modifying code or swaps.  They shouldn't be a source of
> tb_lock contention except if you do SMC (not just dynamic recompilation:
> really self-modifying code).

Do guests with writeable data and code in the same page also
get treated as SMC for these purposes? (That's more common
than real SMC.)

-- PMM



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