From: "Natalie Protasevich" <protasnb@gmail.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled - take 2
Date: Tue, 04 Sep 2007 14:58:59 +0000 [thread overview]
Message-ID: <32209efe0709040758g73aab534p97883acb7559c6d1@mail.gmail.com> (raw)
In-Reply-To: <200708301338.34246.protasnb@gmail.com>
On 9/4/07, Luck, Tony <tony.luck@intel.com> wrote:
> >> global cache purge in their chipset implementation. (For such cases, Intel provided a SAL
> >> table entry to specify if ptc.g is allowed and how many).
> >
> > This seems odd. You never use that sal call to initialized noptcg.
> > Is that an oversight?
>
> The mechanism is a SAL table entry, not a SAL call. Currently that
> entry provides no mechanism to specify that ptc.g should not be used
> at all (the entry provides the count of how many ptc.g can happen in
> parallel, but the spec says that the value "0" means "1" :-( )
>
> There is an ongoing discussion with DIG64 to use a currently reserved
> field in the table to specify the value "0". If that change is approved,
> then we can add code to enable Natalie's code based on the SAL table.
>
> -Tony
>
Yes, as Tony said this is a provision for the (near) future when the
actual mechanism of how the ptc.g availability to be shown in the bios
will be decided on. Then the boot option will be removed. The code is
already urgently needed for current platform work by aforementioned
companies :)
Jes, thank - I will go through your remarks thoroughly, yours and
Robin's, and will fight the wrapping thing to the end...
Regards,
--Natalie
next prev parent reply other threads:[~2007-09-04 14:58 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-30 20:38 [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled Natalie Protasevich
2007-08-31 1:15 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be Zou Nan hai
2007-08-31 1:45 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to bedisabled Luck, Tony
2007-08-31 1:48 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to Zou Nan hai
2007-09-03 8:06 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to bedisabled Natalie Protasevich
2007-09-03 8:06 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled - take 2 Natalie Protasevich
2007-09-03 9:21 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled Jes Sorensen
2007-09-03 9:37 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled - take 2 Jes Sorensen
2007-09-04 8:46 ` Robin Holt
2007-09-04 9:03 ` Luck, Tony
2007-09-04 14:58 ` Natalie Protasevich [this message]
2007-09-04 16:05 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled Natalie Protasevich
2007-09-04 19:59 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled - take 2 Bjorn Helgaas
2007-09-04 21:20 ` Natalie Protasevich
2007-09-05 13:35 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be Jes Sorensen
2007-09-05 13:57 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled Robin Holt
2007-09-05 15:29 ` Natalie Protasevich
2007-09-05 15:47 ` David Mosberger-Tang
2007-09-05 16:01 ` Natalie Protasevich
2007-09-06 16:36 ` David Mosberger-Tang
2007-09-06 18:00 ` Natalie Protasevich
2007-09-07 7:38 ` Luck, Tony
2007-09-07 8:38 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be Jes Sorensen
2007-09-07 16:11 ` [PATCH 1/1] Allow global purge traslation cache (ptc.g) to be disabled Bjorn Helgaas
2007-09-07 16:25 ` Natalie Protasevich
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