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>=20 > I did try adding current_save_fsgs() in svm_vcpu_load(), saving the curre= nt->thread.gsbase value to a new variable in the svm struct. I then used th= at variable in the wrmsrl below, but it still crashed. Then, current->thread.gsbase is from __rdgsbase_inactive() which is user GSBASE. If you do the wrmsrl below, it overwrites the current GSBASE with the=20 user value. >> wrmsrl(MSR_KERNEL_GS_BASE, current->thread.gsbase); Thanks, Chang=