From: Rene Herman <rene.herman@keyaccess.nl>
To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>, "Li, Shaohua" <shaohua.li@intel.com>,
Dave Airlie <airlied@gmail.com>,
Yinghai Lu <yhlu.kernel@gmail.com>,
Andreas Herrmann <andreas.herrmann3@amd.com>,
Arjan van de Ven <arjan@infradead.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
"Siddha, Suresh B" <suresh.b.siddha@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Dave Jones <davej@codemonkey.org.uk>
Subject: Re: [PATCH] x86: {reverve,free}_memtype() take a physical address
Date: Fri, 22 Aug 2008 00:26:57 +0200 [thread overview]
Message-ID: <48ADEBB1.1070203@keyaccess.nl> (raw)
In-Reply-To: <7E82351C108FA840AB1866AC776AEC460B4B033E@orsmsx505.amr.corp.intel.com>
On 22-08-08 00:16, Pallipadi, Venkatesh wrote:
> Yes. Noticed that too and sent a patch here for x86/tip.
>
> http://www.ussg.iu.edu/hypermail/linux/kernel/0808.2/2270.html
>
> It is not very critical as it sounds as only set_memory_uc sets PAT
> bits for RAM pages. Most other users (devmem mmap, ioramep, pci)
> set PAT bits on the reserved memory. And there will not be conflicts
> across RAM and reserveed regions. Regardless, this was a stupid
> bug that we had missed earlier.
And unfortunately I don't think the above fully fixes it for AGP. __pa()
gets the real physical address and the memtypes should be on the GART
remapped physical addresses it seems.
Rene.
next prev parent reply other threads:[~2008-08-21 22:25 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-04 16:30 AGP and PAT (induced?) problem (on AMD family 6) Rene Herman
2008-08-06 13:51 ` Andreas Herrmann
2008-08-06 20:57 ` Rene Herman
2008-08-11 9:46 ` Rene Herman
2008-08-15 14:22 ` Ingo Molnar
2008-08-15 15:24 ` Rene Herman
2008-08-19 10:11 ` Rene Herman
2008-08-19 10:26 ` Ingo Molnar
2008-08-19 14:19 ` Rene Herman
2008-08-19 19:07 ` Venki Pallipadi
2008-08-19 19:22 ` Rene Herman
2008-08-19 23:28 ` Venki Pallipadi
2008-08-20 10:09 ` Ingo Molnar
2008-08-20 10:04 ` Ingo Molnar
2008-08-20 10:50 ` Rene Herman
2008-08-20 14:27 ` Rene Herman
2008-08-20 19:41 ` Venki Pallipadi
2008-08-20 21:40 ` Rene Herman
2008-08-20 21:46 ` Dave Airlie
2008-08-20 22:16 ` Venki Pallipadi
2008-08-21 3:42 ` Andi Kleen
2008-08-21 21:13 ` Suresh Siddha
2008-08-22 2:12 ` Andi Kleen
2008-08-21 12:06 ` Ingo Molnar
2008-08-21 17:15 ` Rene Herman
2008-08-21 22:10 ` [PATCH] x86: {reverve,free}_memtype() take a physical address Rene Herman
2008-08-21 22:16 ` Pallipadi, Venkatesh
2008-08-21 22:26 ` Rene Herman [this message]
2008-08-21 22:57 ` Pallipadi, Venkatesh
2008-08-21 23:06 ` Rene Herman
2008-08-21 23:02 ` [PATCH] x86: have set_memory_array_{uc,wb} coalesce memtypes Rene Herman
2008-08-22 4:15 ` Ingo Molnar
2008-08-22 19:08 ` Venki Pallipadi
2008-08-22 20:15 ` Rene Herman
2008-08-23 15:33 ` Ingo Molnar
2008-08-22 20:02 ` Rene Herman
2008-09-10 19:52 ` AGP PAT issue Rene Herman
2008-09-11 8:17 ` Ingo Molnar
2008-09-11 8:30 ` Rene Herman
2008-09-13 0:26 ` Pallipadi, Venkatesh
2008-09-13 0:44 ` Rene Herman
2008-10-09 15:53 ` Thomas Hellstrom
2008-10-13 17:10 ` Pallipadi, Venkatesh
2008-10-13 19:26 ` Thomas Hellström
2008-08-20 21:02 ` AGP and PAT (induced?) problem (on AMD family 6) Dave Airlie
2008-08-20 21:16 ` Rene Herman
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