From: "Radim Krčmář" <rkrcmar@redhat.com>
To: "Huang, Kai" <kai.huang@linux.intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Kai Huang <kaih.linux@gmail.com>,
kvm@vger.kernel.org
Subject: Re: [PATCH 10/10] kvm: vmx: handle VMEXIT from SGX Enclave
Date: Tue, 27 Jun 2017 17:29:17 +0200 [thread overview]
Message-ID: <20170627152917.GB1503@potion> (raw)
In-Reply-To: <0fe15915-1d2a-288e-bfec-9096412cc26f@linux.intel.com>
2017-06-19 17:02+1200, Huang, Kai:
> Hi Paolo, all,
>
> Sorry for reply late.
I'm sorry as well,
> Do you think it is feasible to turn on PLE again on another further VMEXIT?
> Or another VMEXIT that is not from enclave?
>
> Any suggestions so that I can improve in next version RFC?
KVM doesn't enable "PAUSE exiting", it enables "PAUSE loop exiting".
SDM recommends disabling "PAUSE exiting" because the VM exits
(fault-like) on every PAUSE and needs intervention in order to progress,
but SDM doesn't say to disable "PAUSE loop exiting".
Being inside an enclave doesn't change the usefulness of PLE (yielding
the CPU to a task that isn't blocked), so I think it would be best to do
nothing with it, thanks.
next prev parent reply other threads:[~2017-06-27 15:29 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-08 5:24 [RFC PATCH 00/10] Basic KVM SGX Virtualization support Kai Huang
2017-05-08 5:24 ` [PATCH 01/10] x86: add SGX Launch Control definition to cpufeature Kai Huang
2017-05-08 5:24 ` [PATCH 02/10] kvm: vmx: add ENCLS VMEXIT detection Kai Huang
2017-05-08 5:24 ` [PATCH 03/10] kvm: vmx: detect presence of host SGX driver Kai Huang
2017-05-08 5:24 ` [PATCH 04/10] kvm: sgx: new functions to init and destory SGX for guest Kai Huang
2017-05-08 5:24 ` [PATCH 05/10] kvm: x86: add KVM_GET_SUPPORTED_CPUID SGX support Kai Huang
2017-05-08 5:24 ` [PATCH 06/10] kvm: x86: add KVM_SET_CPUID2 " Kai Huang
2017-05-08 5:24 ` [PATCH 07/10] kvm: vmx: add SGX IA32_FEATURE_CONTROL MSR emulation Kai Huang
2017-05-08 5:24 ` [PATCH 08/10] kvm: vmx: add guest's IA32_SGXLEPUBKEYHASHn runtime switch support Kai Huang
2017-05-12 0:32 ` Huang, Kai
2017-05-12 3:28 ` [intel-sgx-kernel-dev] " Andy Lutomirski
2017-05-12 4:56 ` Huang, Kai
2017-05-12 6:11 ` Andy Lutomirski
2017-05-12 18:48 ` Christopherson, Sean J
2017-05-12 20:50 ` Christopherson, Sean J
2017-05-16 0:59 ` Huang, Kai
2017-05-16 1:22 ` Huang, Kai
2017-05-16 0:48 ` Huang, Kai
2017-05-16 14:21 ` Paolo Bonzini
2017-05-18 7:54 ` Huang, Kai
2017-05-18 8:58 ` Paolo Bonzini
2017-05-17 0:09 ` Andy Lutomirski
2017-05-18 7:45 ` Huang, Kai
2017-06-06 20:52 ` Huang, Kai
2017-06-06 21:22 ` Andy Lutomirski
2017-06-06 22:51 ` Huang, Kai
2017-06-07 14:45 ` Cohen, Haim
2017-06-08 12:31 ` Jarkko Sakkinen
2017-06-08 23:47 ` Huang, Kai
2017-06-08 23:53 ` Andy Lutomirski
2017-06-09 15:38 ` Cohen, Haim
2017-06-10 12:23 ` Jarkko Sakkinen
2017-06-11 22:45 ` Huang, Kai
2017-06-12 8:36 ` Jarkko Sakkinen
2017-06-12 9:53 ` Huang, Kai
2017-06-12 16:24 ` Andy Lutomirski
2017-06-12 22:08 ` Huang, Kai
2017-06-12 23:00 ` Andy Lutomirski
2017-06-16 3:46 ` Huang, Kai
2017-06-16 4:11 ` Andy Lutomirski
2017-06-16 4:33 ` Huang, Kai
2017-06-16 9:34 ` Huang, Kai
2017-06-16 16:03 ` Andy Lutomirski
2017-06-16 16:25 ` Andy Lutomirski
2017-06-16 16:31 ` Christopherson, Sean J
2017-06-16 16:43 ` Andy Lutomirski
2017-06-13 18:57 ` Jarkko Sakkinen
2017-06-13 19:05 ` Jarkko Sakkinen
2017-06-13 20:13 ` Sean Christopherson
2017-06-14 9:37 ` Jarkko Sakkinen
2017-06-14 15:11 ` Christopherson, Sean J
2017-06-14 17:03 ` Jarkko Sakkinen
2017-06-13 23:28 ` Huang, Kai
2017-06-14 9:44 ` Jarkko Sakkinen
2017-07-19 15:04 ` Sean Christopherson
2017-05-15 12:46 ` Jarkko Sakkinen
2017-05-15 23:56 ` Huang, Kai
2017-05-16 14:23 ` Paolo Bonzini
2017-05-17 14:21 ` Sean Christopherson
2017-05-18 8:14 ` Huang, Kai
2017-05-20 21:55 ` Andy Lutomirski
2017-05-23 5:43 ` Huang, Kai
2017-05-23 5:55 ` Huang, Kai
2017-05-23 16:34 ` Andy Lutomirski
2017-05-23 16:43 ` Paolo Bonzini
2017-05-24 8:20 ` Huang, Kai
2017-05-20 13:23 ` Jarkko Sakkinen
2017-05-08 5:24 ` [PATCH 09/10] kvm: vmx: handle ENCLS VMEXIT Kai Huang
2017-05-08 8:08 ` Paolo Bonzini
2017-05-10 1:30 ` Huang, Kai
2017-05-08 5:24 ` [PATCH 10/10] kvm: vmx: handle VMEXIT from SGX Enclave Kai Huang
2017-05-08 8:22 ` Paolo Bonzini
2017-05-11 9:34 ` Huang, Kai
2017-06-19 5:02 ` Huang, Kai
2017-06-27 15:29 ` Radim Krčmář [this message]
2017-06-28 22:22 ` Huang, Kai
2017-05-08 5:24 ` [PATCH 11/11] kvm: vmx: workaround FEATURE_CONTROL[17] is not set by BIOS Kai Huang
2017-05-08 5:29 ` Huang, Kai
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