Re: [Qemu-devel] [PATCH] configure: Automatically fall back to TCI on non-release architectures

[Daniel P . Berrangé]

On Fri, Apr 05, 2019 at 10:47:54AM +0200, Philippe Mathieu-Daudé wrote:
> Hi Helge,
> 
> On 4/5/19 9:56 AM, Helge Deller wrote:
> > On 05.04.19 03:34, Peter Maydell wrote:
> >> On Fri, 5 Apr 2019 at 01:59, Helge Deller <address@hidden> wrote:
> >>> If a non-release architecture is found, and it's known that there is no
> >>> native TCG support for that CPU, automatically fall back to the TCI
> >>> implementation instead of requesting the user to run configure again
> >>> with the --enable-tcg-interpreter option.
> >>>
> >>> This change simplifies building qemu in automatic build environments
> >>> (like in my case the debian buildds) because one does not need to
> >>> special case on the architectures.
> >>
> >> I don't think we should do this. TCI is unmaintained, has several
> >> known flaws,
> > 
> > Just out of interest: Is there a list with those flaws somewhere?
> 
> The last big discussion is in this thread:
> https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg06528.html

Do the various crashes that you illustrate in that cover letter
still exist today ? If so, 2 years of continued brokenness with no
fixes would reinforce the the view that it is time to remove TCI
from the codebase.

Regards,
Daniel
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