From: "H. Peter Anvin" <hpa@zytor.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: "Huang, Ying" <ying.huang@intel.com>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>, Andi Kleen <ak@suse.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: EFI_PAGE_SHIFT fix
Date: Mon, 25 Feb 2008 10:19:13 -0800 [thread overview]
Message-ID: <47C306A1.2040909@zytor.com> (raw)
In-Reply-To: <20080225074059.GI11327@elte.hu>
Ingo Molnar wrote:
> * Huang, Ying <ying.huang@intel.com> wrote:
>
>> Make x86 EFI code works when EFI_PAGE_SHIFT != PAGE_SHIFT. The
>> memrage_efi_to_native() provided in this patch can be used on other
>> EFI platform such as IA64 too.
>>
>> This patch has been tested on Intel x86_64 platform with EFI 64/32
>> firmware.
>
> this is mostly cosmetic, isnt it - because currently nobody expects
> EFI_PAGE_SHIFT and PAGE_SHIFT to ever change on x86, right? I've queued
> up your patch for 2.6.26, ok?
>
There keeps being a lot of talk about a larger x86 pagesize, either
involving future hardware support or via page clustering in the kernel.
Going beyond a 48-bit address space (in long mode) may mean increasing
the page size.
-hpa
prev parent reply other threads:[~2008-02-25 18:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-25 7:18 [PATCH] x86: EFI_PAGE_SHIFT fix Huang, Ying
2008-02-25 7:40 ` Ingo Molnar
2008-02-25 18:19 ` H. Peter Anvin [this message]
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