linux-kernel - Re: [PATCH] Remove Barcelona Thermal Throttling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 4 Feb 2008 08:20:14 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Russell Leidich <rml@...gle.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Torsten Kaiser <just.for.lkml@...glemail.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, valdis.kletnieks@...edu
Subject: Re: [PATCH] Remove Barcelona Thermal Throttling

On Sun, Feb 03, 2008 at 10:13:53PM -0800, Russell Leidich wrote:
> All,
> 
> You can imagine my dismay when I recently learned that, after all our
> collective effort, hardware thermal throttling does not work reliably
> on Barcelona, according to AMD.  Due to NDA restrictions, I am unable
> to provide further details.

Too bad. Hopefully that code will work then on the hypothetic
future parts with fixed throttling. Perhaps it would be better
to just remove it now and readd later.

All this reminds me you need to adjust the Kconfig dependencies
for K8_NB too to be always enabled with MCE_AMD.

Ideally on top of this patch with a || MCE_AMD

-Andi

---

Fix and simplify k8.c Kconfig dependencies

- Check for K8_NUMA instead of NUMA && PCI
- No need to check for x86_64 explicitely

Signed-off-by: Andi Kleen <ak@...e.de>

Index: linux/arch/x86/Kconfig
===================================================================
--- linux.orig/arch/x86/Kconfig
+++ linux/arch/x86/Kconfig
@@ -1540,7 +1540,7 @@ endif # X86_32
 
 config K8_NB
 	def_bool y
-	depends on AGP_AMD64 || (X86_64 && (GART_IOMMU || (PCI && NUMA)))
+	depends on AGP_AMD64 || GART_IOMMU || K8_NUMA
 
 source "drivers/pcmcia/Kconfig"
 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/