From: Andi Kleen <ak@suse.de>
To: "huang ying" <huang.ying.caritas@gmail.com>
Cc: "Thomas Gleixner" <tglx@linutronix.de>,
"Huang, Ying" <ying.huang@intel.com>,
"Ingo Molnar" <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/5] x86: add executable mapping support to ioremap
Date: Thu, 31 Jan 2008 14:27:38 +0100 [thread overview]
Message-ID: <200801311427.38198.ak@suse.de> (raw)
In-Reply-To: <851fc09e0801310522s2d690c3ejef661e5ce6847f73@mail.gmail.com>
> addr = ioremap(phys_addr, len);
> set_memory_x(addr);
> if (phys_addr < (end_pfn_mapped >> PAGE_SHIFT))
> set_memory_x(__va(phys_addr));
If you just need the ioremap executable there is no reason to split
up the direct mapping for this too. The x86 architecture does not require
x bits to be coherent between mappings; only the caching attributes.
-Andi
next prev parent reply other threads:[~2008-01-31 13:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-31 7:36 [PATCH 4/5] x86: add executable mapping support to ioremap Huang, Ying
2008-01-31 13:00 ` Thomas Gleixner
2008-01-31 13:22 ` huang ying
2008-01-31 13:27 ` Andi Kleen [this message]
2008-01-31 16:30 ` Thomas Gleixner
2008-01-31 16:28 ` Thomas Gleixner
2008-01-31 16:30 ` Andi Kleen
2008-01-31 16:37 ` Thomas Gleixner
2008-01-31 16:44 ` Andi Kleen
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