linux-kernel - Re: [PATCH v2] xen: make multicall debug boot time selectable

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Message-ID: <4930431a-8dc8-47ac-8d4b-75b64c5110e0@oracle.com>
Date: Thu, 11 Jul 2024 09:24:09 -0400
From: boris.ostrovsky@...cle.com
To: Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        x86@...nel.org, linux-doc@...r.kernel.org
Cc: Jonathan Corbet <corbet@....net>, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>, xen-devel@...ts.xenproject.org
Subject: Re: [PATCH v2] xen: make multicall debug boot time selectable


On 7/10/24 5:27 AM, Juergen Gross wrote:
> Today Xen multicall debugging needs to be enabled via modifying a
> define in a source file for getting debug data of multicall errors
> encountered by users.
>
> Switch multicall debugging to depend on a boot parameter "xen_mc_debug"
> instead, enabling affected users to boot with the new parameter set in
> order to get better diagnostics.
>
> With debugging enabled print the following information in case at least
> one of the batched calls failed:
> - all calls of the batch with operation, result and caller
> - all parameters of each call
> - all parameters stored in the multicall data for each call
>
> Signed-off-by: Juergen Gross <jgross@...e.com>


Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>