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Date: Thu, 22 Apr 2010 12:09:25 -0700 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Borislav Petkov <borislav.petkov@....com>, "H. Peter Anvin" <hpa@...or.com> Subject: [114/197] x86, cacheinfo: Remove NUMA dependency, fix for AMD Fam10h rev D1 2.6.32-stable review patch. If anyone has any objections, please let us know. ------------------ From: Borislav Petkov <borislav.petkov@....com> commit f619b3d8427eb57f0134dab75b0d217325c72411 upstream. The show/store_cache_disable routines depend unnecessarily on NUMA's cpu_to_node and the disabling of cache indices broke when !CONFIG_NUMA. Remove that dependency by using a helper which is always correct. While at it, enable L3 Cache Index disable on rev D1 Istanbuls which sport the feature too. Signed-off-by: Borislav Petkov <borislav.petkov@....com> LKML-Reference: <20100218184339.GG20473@...ab> Signed-off-by: H. Peter Anvin <hpa@...or.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- arch/x86/kernel/cpu/intel_cacheinfo.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -327,7 +327,7 @@ amd_check_l3_disable(int index, struct _ /* see errata #382 and #388 */ if ((boot_cpu_data.x86 == 0x10) && - ((boot_cpu_data.x86_model < 0x9) || + ((boot_cpu_data.x86_model < 0x8) || (boot_cpu_data.x86_mask < 0x1))) return; @@ -759,7 +759,7 @@ static ssize_t show_cache_disable(struct unsigned int index) { int cpu = cpumask_first(to_cpumask(this_leaf->shared_cpu_map)); - int node = cpu_to_node(cpu); + int node = amd_get_nb_id(cpu); struct pci_dev *dev = node_to_k8_nb_misc(node); unsigned int reg = 0; @@ -786,7 +786,7 @@ static ssize_t store_cache_disable(struc const char *buf, size_t count, unsigned int index) { int cpu = cpumask_first(to_cpumask(this_leaf->shared_cpu_map)); - int node = cpu_to_node(cpu); + int node = amd_get_nb_id(cpu); struct pci_dev *dev = node_to_k8_nb_misc(node); unsigned long val = 0; -- 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/
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