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Re: [Qemu-trivial] [PATCH 1/1] tci: eliminate UB due to unaligned reads

From: Richard Henderson
Subject: Re: [Qemu-trivial] [PATCH 1/1] tci: eliminate UB due to unaligned reads
Date: Sat, 3 Mar 2018 06:13:37 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 03/03/2018 06:07 AM, Anatoly Trosinenko wrote:
> Can rewriting TCI in such a way that every operation is aligned at 4- or even
> 8-byte boundary fix the situation or are there some more serious problems?

With the current TCI, there are also problems with calls to helper functions.
The only portable way to do this is to use a library such as libffi.

I once rewrote TCI completely in order to address both problems, but that only
brought questions as to why TCI is useful at all.

So.  Why do you want to use TCI instead of a native TCG backend?


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