linux-kernel - Re: [PATCH] drivers/xen/hypervisor: Expose VM SIF flags to userspace

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Message-ID: <dc2c5f88-89c6-7a20-8135-d6650c5baf21@citrix.com>
Date:   Tue, 29 Nov 2022 17:38:06 +0000
From:   "Per Bilse (3P)" <Per.Bilse@...rix.com>
To:     Andrew Cooper <Andrew.Cooper3@...rix.com>
CC:     Stefano Stabellini <sstabellini@...nel.org>,
        Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Jan Beulich <jbeulich@...e.com>,
        "moderated list:XEN HYPERVISOR INTERFACE" 
        <xen-devel@...ts.xenproject.org>, Juergen Gross <jgross@...e.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers/xen/hypervisor: Expose VM SIF flags to userspace

On 29/11/2022 16:41, Andrew Cooper wrote:
> As for the actual flags exposed, it would be very beneficial not to copy
> the exist proc interface.  It would be better to expose a subdir that
> had files containing booleans, because that also gives userspace an easy
> way to figure out if the particular flag is known to Linux,
> independently of whether the flag is set for a specific VM.

OK, I'll do that instead; I thought it was the single "control_d" that 
shouldn't be perpetuated.

Best,

   -- Per