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[Xen-devel] [RFC][PATCH] AMD CPU core topology detection
| To: | "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, <keir@xxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [RFC][PATCH] AMD CPU core topology detection |
| From: | Wei Huang <wei.huang2@xxxxxxx> |
| Date: | Thu, 6 Jan 2011 10:47:35 -0600 |
| Cc: | |
| Delivery-date: | Thu, 06 Jan 2011 08:49:33 -0800 |
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Hi Keir and Jan,This patch is to support the new core pair topology introduced by AMD new CPUs, which introduces a new concept of core/compute unit/node. There is a new feature bit for topology extension in CPUID:0x80000001. Also a new CPUID (0x8000001E) is introduced for CPU topology enumeration. This patch collects the sibling information from a new CPUID and the info will be stored into the sibling map in Xen. Please help review it. Comments are welcome. Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
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