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From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: George Dunlap <dunlapg@umich.edu>, Juergen Gross <jgross@suse.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: Patches for stable
Date: Fri, 6 Apr 2018 10:10:09 -0400	[thread overview]
Message-ID: <8aafdc1e-0994-7b52-20f4-fb1fd4bfb3d2@oracle.com> (raw)
In-Reply-To: <CAFLBxZb_5u5F6DA5G2YwDP0sXR-w8jr1bgqdZGv=ps8Qh_kxnQ@mail.gmail.com>

On 04/06/2018 09:33 AM, George Dunlap wrote:
> On Fri, Apr 6, 2018 at 2:12 PM, Juergen Gross <jgross@suse.com> wrote:
>>
>> So its time for a new XENFEAT_ value then? This would be the least
>> intrusive way to add such a flag. Something like
>> XENFEAT_linux_high_rsdp_address_okay ?
> That sounds reasonable to me.  I'd personally make it something like
> "reads_rsdp_from_start_info" or something, but the name doesn't matter
> to me as much. :-)
>
> The other option would be to introduce a "max_pvh_interface_supported"
> or something.  If it's not present (and it's a Linux kernel), default
> it to '0', and have that mean "RSDP must be under 1MiB".
>
> That will allow us elbow-room in the future if we want to make other
> breaking changes like this, without needing to keep a separate flag
> around for each one indefinitely.

I slightly more prefer a per-feature bit. It is indeed somewhat more
maintenance-heavy but is also more flexible.

-boris


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  reply	other threads:[~2018-04-06 14:08 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-04 10:38 Patches for stable Juergen Gross
2018-04-04 14:27 ` Greg KH
2018-04-04 14:27 ` Greg KH
2018-04-04 14:30   ` Juergen Gross
2018-04-04 14:46     ` Greg KH
2018-04-04 15:12       ` Juergen Gross
2018-04-04 15:12       ` Juergen Gross
2018-04-04 15:42         ` Greg KH
2018-04-04 16:32           ` Juergen Gross
2018-04-04 16:32           ` Juergen Gross
2018-04-05  6:33             ` Greg KH
2018-04-05  7:02               ` Juergen Gross
2018-04-05  7:14                 ` Greg KH
2018-04-05  7:14                 ` Greg KH
2018-04-05  8:00                   ` Juergen Gross
2018-04-05  8:00                   ` [Xen-devel] " Juergen Gross
2018-04-05 10:06                     ` George Dunlap
2018-04-05 10:06                     ` [Xen-devel] " George Dunlap
2018-04-05 10:15                       ` George Dunlap
2018-04-05 10:15                       ` [Xen-devel] " George Dunlap
2018-04-05 12:19                       ` Juergen Gross
2018-04-05 12:19                       ` [Xen-devel] " Juergen Gross
2018-04-05 13:00                         ` Boris Ostrovsky
2018-04-05 13:00                         ` [Xen-devel] " Boris Ostrovsky
2018-04-05 13:06                           ` Juergen Gross
2018-04-05 13:06                           ` [Xen-devel] " Juergen Gross
2018-04-05 13:42                             ` George Dunlap
2018-04-05 13:42                             ` [Xen-devel] " George Dunlap
2018-04-05 14:09                               ` Juergen Gross
2018-04-05 14:56                                 ` George Dunlap
2018-04-05 14:56                                 ` [Xen-devel] " George Dunlap
2018-04-05 17:11                                   ` Juergen Gross
2018-04-05 18:33                                     ` Boris Ostrovsky
2018-04-06  8:00                                       ` Juergen Gross
2018-04-06  9:38                                         ` George Dunlap
2018-04-06  9:49                                       ` George Dunlap
2018-04-06 10:02                                         ` Juergen Gross
2018-04-06 10:07                                           ` George Dunlap
2018-04-06 10:57                                             ` Juergen Gross
2018-04-06 11:13                                               ` George Dunlap
2018-04-06 13:12                                                 ` Juergen Gross
2018-04-06 13:33                                                   ` George Dunlap
2018-04-06 14:10                                                     ` Boris Ostrovsky [this message]
2018-04-06 15:15                                                       ` Juergen Gross
2018-04-06 10:13                                     ` George Dunlap
2018-04-06 10:44                                       ` Juergen Gross
2018-04-05 14:09                               ` Juergen Gross
2018-04-05 20:20                 ` Thomas Backlund
2018-04-05 20:20                 ` Thomas Backlund
2018-04-05  7:02               ` Juergen Gross
2018-04-05  6:33             ` Greg KH
2018-04-04 15:42         ` Greg KH
2018-04-04 14:46     ` Greg KH
2018-04-04 14:30   ` Juergen Gross
2018-04-04 10:38 Juergen Gross

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