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[Xen-devel] [PATCH][HVM] fix XSAVE leaf 0 EBX size calculation
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| Subject: | [Xen-devel] [PATCH][HVM] fix XSAVE leaf 0 EBX size calculation |
| From: | Wei Huang <wei.huang2@xxxxxxx> |
| Date: | Fri, 4 Feb 2011 11:49:28 -0600 |
| Cc: | gang.wei@xxxxxxxxx |
| Delivery-date: | Fri, 04 Feb 2011 09:50:31 -0800 |
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| Organization: | AMD |
| Reply-to: | wei.huang2@xxxxxxx |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
Fixes a size calculation bug when enabled bits in XFEATURE_MASK (xcr0) aren't contiguous. Current for_loop will stop when xcr0 feature bit is 0. But in reality, the bits can be non-contiguous. One example is that LWP is bit 62 on AMD platform. This patch iterates through all bits to calculate the size for enabled features. Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
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