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Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-
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From: |
Gerd Hoffmann |
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Subject: |
Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object |
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Date: |
Thu, 24 Mar 2022 10:37:25 +0100 |
Hi,
> #VE can be triggered in various situations. e.g., CPUID on some leaves, and
> RD/WRMSR on some MSRs. #VE on pending page is just one of the sources, Linux
> just wants to disable this kind of #VE since it wants to prevent unexpected
> #VE during SYSCALL gap.
Linux guests can't disable those on their own? Requiring this being
configured on the host looks rather fragile to me ...
take care,
Gerd
- [RFC PATCH v3 09/36] KVM: Introduce kvm_arch_pre_create_vcpu(), (continued)
- [RFC PATCH v3 09/36] KVM: Introduce kvm_arch_pre_create_vcpu(), Xiaoyao Li, 2022/03/17
- [RFC PATCH v3 10/36] i386/kvm: Move architectural CPUID leaf generation to separate helper, Xiaoyao Li, 2022/03/17
- [RFC PATCH v3 11/36] i386/tdx: Initialize TDX before creating TD vcpus, Xiaoyao Li, 2022/03/17
- [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object, Xiaoyao Li, 2022/03/17
- Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object, Gerd Hoffmann, 2022/03/22
- Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object, Xiaoyao Li, 2022/03/24
- Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object, Gerd Hoffmann, 2022/03/24
- Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object, Xiaoyao Li, 2022/03/24
- Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object,
Gerd Hoffmann <=
- Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object, Xiaoyao Li, 2022/03/24
- Re: [RFC PATCH v3 12/36] i386/tdx: Add property sept-ve-disable for tdx-guest object, Isaku Yamahata, 2022/03/24
[RFC PATCH v3 13/36] i386/tdx: Wire CPU features up with attributes of TD guest, Xiaoyao Li, 2022/03/17
[RFC PATCH v3 14/36] i386/tdx: Validate TD attributes, Xiaoyao Li, 2022/03/17
[RFC PATCH v3 16/36] i386/tdx: Set kvm_readonly_mem_enabled to false for TDX VM, Xiaoyao Li, 2022/03/17
[RFC PATCH v3 15/36] i386/tdx: Implement user specified tsc frequency, Xiaoyao Li, 2022/03/17
[RFC PATCH v3 17/36] pflash_cfi01/tdx: Introduce ram_mode of pflash for TDVF, Xiaoyao Li, 2022/03/17