Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1451465

Re: [Xen-devel] [GIT PULL] xen: features and fixes for 4.8-rc0

Show all headers | View raw

On 27/07/16 19:42, Linus Torvalds wrote:
> On Wed, Jul 27, 2016 at 6:45 AM, David Vrabel <dvrabel@cantab.net> wrote:
>> Shannon Zhao (16):
>>       Xen: ACPI: Hide UART used by Xen
> So this caused a trivial conflict. No biggie, it wasn't bad and the
> patch was acked by Rafael. However, looking at it made me somewhat
> unhappy.
>
> Should the device entry in ACPI really be hidden unconditionally? In
> particular, if we are *not* running under virtualization, it sounds
> wrong to hide it.
>
> Comments? Am I missing something?

The purpose of the ACPI STAO table (Status Override table, ratified in
ACPI 6.0) is to list items elsewhere in the ACPI namespace which should
be completely ignored.  It is used in cases where it is impossible or
prohibitive to edit the system AML.

The patch itself only hides the UART if instructed to do so by the STAO
table (last hunk).

~Andrew

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[GIT PULL] xen: features and fixes for 4.8-rc0 David Vrabel <dvrabel@cantab.net> - 2016-07-27 15:50 +0200
  Re: [GIT PULL] xen: features and fixes for 4.8-rc0 Linus Torvalds <torvalds@linux-foundation.org> - 2016-07-27 20:50 +0200
    Re: [Xen-devel] [GIT PULL] xen: features and fixes for 4.8-rc0 Andrew Cooper <andrew.cooper3@citrix.com> - 2016-07-27 21:00 +0200
      Re: [Xen-devel] [GIT PULL] xen: features and fixes for 4.8-rc0 "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-07-28 01:10 +0200
        Re: [Xen-devel] [GIT PULL] xen: features and fixes for 4.8-rc0 Linus Torvalds <torvalds@linux-foundation.org> - 2016-07-28 01:20 +0200
          Re: [Xen-devel] [GIT PULL] xen: features and fixes for 4.8-rc0 "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-07-28 01:50 +0200
            Re: [Xen-devel] [GIT PULL] xen: features and fixes for 4.8-rc0 Andrew Cooper <andrew.cooper3@citrix.com> - 2016-07-28 02:30 +0200

csiph-web