From: "H. Peter Anvin" <hpa@zytor.com>
To: "Cestonaro,
Thilo \(external\)"
<Thilo.Cestonaro.external@fujitsu-siemens.com>
Cc: Tuncer Ayaz <tuncer.ayaz@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: NonExecutable Bit in 32Bit
Date: Tue, 24 Apr 2007 23:55:34 -0700 [thread overview]
Message-ID: <462EFB66.1090907@zytor.com> (raw)
In-Reply-To: <F7F9B0BE3E9BD449B110D0B1CEF6CAEF0530256E@ABGEX01E.abg.fsc.net>
Cestonaro, Thilo (external) wrote:
> Hey,
>
>> CONFIG_HIGHMEM64G=y
>> CONFIG_HIGHMEM=y
>> CONFIG_X86_PAE=y
>
> Ok in highmem it's active, whats about lowmem?
It's not highmem vs lowmem, it is that HIGHMEM64G is required for
X86_PAE, which is required for NX support.
> x86-64 is NX active for lowmem too AFAIK.
Good thing, since x86-64 doesn't have highmem (nor does it need it,
since it has enough virtual address space to map all physical address
space and still have left over, like it *should* be.)
-hpa
next prev parent reply other threads:[~2007-04-25 6:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-24 6:31 NonExecutable Bit in 32Bit Cestonaro, Thilo (external)
2007-04-24 6:42 ` William Heimbigner
2007-04-24 7:02 ` Cestonaro, Thilo (external)
2007-04-24 7:46 ` Tuncer Ayaz
2007-04-25 6:19 ` Cestonaro, Thilo (external)
2007-04-25 6:33 ` Tuncer Ayaz
2007-04-25 6:37 ` Tuncer Ayaz
2007-04-25 6:58 ` Cestonaro, Thilo (external)
2007-04-25 9:41 ` Marat Buharov
2007-04-25 10:28 ` Cestonaro, Thilo (external)
2007-04-25 6:55 ` H. Peter Anvin [this message]
2007-04-24 12:52 ` Andi Kleen
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