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Re: [PATCH 0/9] add LOG_UNSUPP log type + mark hcalls as unsupp


From: Philippe Mathieu-Daudé
Subject: Re: [PATCH 0/9] add LOG_UNSUPP log type + mark hcalls as unsupp
Date: Mon, 7 Mar 2022 20:58:46 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.6.1

On 7/3/22 20:15, Daniel Henrique Barboza wrote:
Hi,

I got a lot of noise trying to debug an AIX guest in a pseries machine when 
running with
'-d unimp'. The reason is that there is no distinction between features
(in my case, hypercalls) that are unimplemented because we never considered,
versus features that we made a design choice not to implement.

This series adds a new log type, LOG_UNSUPP, as a way to filter the
second case. After changing the log level of existing unsupported
pseries hypercalls, -d unimp was reporting just the ones that I need to
worry about and decide whether we should implement it or mark as
unsupported in our model. After this series there's still one hypercall
thgat is being thrown by AIX. We'll deal with that another day.

Why not simply use a trace_spapr_hcall_unsupported() event?

Then you can filter using '-trace spapr_hcall_unsupported'.



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