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From: | Paolo Bonzini |
Subject: | Re: [PATCH v5 1/2] x86/cpu: Add support for UMONITOR/UMWAIT/TPAUSE |
Date: | Wed, 9 Oct 2019 10:06:14 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 29/09/19 03:57, Tao Xu wrote: > + } else if (function == 7 && index == 0 && reg == R_ECX) { > + if (enable_cpu_pm) { > + ret |= CPUID_7_0_ECX_WAITPKG; This is incorrect. You should disable WAITPKG if !enable_cpu_pm, but you should not enable it forcefully if enable_cpu_pm is true. Paolo > + } else { > + ret &= ~CPUID_7_0_ECX_WAITPKG; > + }
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