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wbinvd is used to write back all modified cache lines in the processor's internal cache to main memory and invalidates(flushes) the internal caches. Using clflushopt instructions to emulate wbinvd to flush each guest vm memory, if CLFLUSHOPT is not supported, boot will fail. Signed-off-by: Jack Ren <jack.ren@intel.com> Signed-off-by: Yuan Liu <yuan1.liu@intel.com> Reviewed-by: Li, Fei1 <fei1.li@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com> |
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