From: "H. Peter Anvin" <hpa@zytor.com>
To: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>,
tglx@linutronix.de, linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v2] x86: UV SGI, Don't track GRU space in PAT
Date: Tue, 17 Nov 2009 14:21:45 -0800 [thread overview]
Message-ID: <4B0321F9.5060308@zytor.com> (raw)
In-Reply-To: <20091117212318.GA21137@sgi.com>
On 11/17/2009 01:23 PM, Jack Steiner wrote:
> GRU space is always mapped as WB in the page table. There is
> no need to track the mappings in the PAT. This also eliminates
> the "freeing invalid memtype" messages when the GRU space is unmapped.
>
> Signed-off-by: Jack Steiner <steiner@sgi.com>
>
> ---
> Version 2 with changes suggested by Ingo (at least I think I understood what
> he wanted).
Looks good, except I think is_untracked_pat_range() probably should me a
member in the x86_platform structure -- as, probably, should
x86_platform_ipi_callback.
-hpa
next prev parent reply other threads:[~2009-11-17 22:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-29 18:47 [PATCH] x86: UV SGI, Don't track GRU space in PAT Jack Steiner
2009-11-08 12:06 ` Ingo Molnar
2009-11-11 18:30 ` Jack Steiner
2009-11-17 21:23 ` [PATCH v2] " Jack Steiner
2009-11-17 22:21 ` H. Peter Anvin [this message]
2009-11-19 20:23 ` [PATCH v3] " Jack Steiner
2009-11-23 18:25 ` Ingo Molnar
2009-11-23 18:55 ` [tip:x86/mm] x86: UV SGI: " tip-bot for Jack Steiner
2009-11-24 1:12 ` [tip:x86/mm] x86, mm: Call is_untracked_pat_range() rather than is_ISA_range() tip-bot for H. Peter Anvin
2009-11-24 1:13 ` [tip:x86/mm] x86, mm: is_untracked_pat_range() takes a normal semiclosed range tip-bot for H. Peter Anvin
2009-11-24 1:13 ` [tip:x86/mm] x86: Change is_ISA_range() into an inline function tip-bot for H. Peter Anvin
2009-11-24 1:13 ` [tip:x86/mm] x86, platform: Change is_untracked_pat_range() to bool; cleanup init tip-bot for H. Peter Anvin
2009-12-01 7:36 ` [tip:x86/mm] x86, mm: Correct the implementation of is_untracked_pat_range() tip-bot for H. Peter Anvin
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