From: Sean Christopherson <seanjc@google.com>
To: Binbin Wu <binbin.wu@linux.intel.com>
Cc: xiaoyao.li@intel.com, pbonzini@redhat.com, kvm@vger.kernel.org,
rick.p.edgecombe@intel.com, kai.huang@intel.com,
adrian.hunter@intel.com, reinette.chatre@intel.com,
tony.lindgren@intel.com, isaku.yamahata@intel.com,
yan.y.zhao@intel.com, chao.gao@intel.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 6/8] KVM: TDX: Handle TDG.VP.VMCALL<ReportFatalError>
Date: Wed, 12 Feb 2025 05:53:30 -0800 [thread overview]
Message-ID: <Z6yn2mNYSkhlwtKd@google.com> (raw)
In-Reply-To: <4b23f7c7-b5e6-41c9-bcae-bd1686b801a6@linux.intel.com>
On Wed, Feb 12, 2025, Binbin Wu wrote:
> On 2/12/2025 8:18 AM, Sean Christopherson wrote:
> > On Tue, Feb 11, 2025, Binbin Wu wrote:
> > the information is quite useless because userspace doesn't have reg_mask
> > and so can't know what's in data[4], data[5], etc... And I won't be the
> > least bit surprised if guests deviate from the GHCI.
>
> But it also confuses userspace if guests uses special protocol to pass
> information other than ASCII byte stream.
Yes, but only if userspace and the guest aren't in cahoots. There are use cases
where the VMM and the VM are managed/owned by the same entity.
next prev parent reply other threads:[~2025-02-12 13:53 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-11 2:54 [PATCH v2 0/8] KVM: TDX: TDX hypercalls may exit to userspace Binbin Wu
2025-02-11 2:54 ` [PATCH v2 1/8] KVM: x86: Have ____kvm_emulate_hypercall() read the GPRs Binbin Wu
2025-02-11 5:05 ` Huang, Kai
2025-02-11 10:23 ` Xiaoyao Li
2025-02-12 1:32 ` Binbin Wu
2025-02-12 3:12 ` Xiaoyao Li
2025-02-11 2:54 ` [PATCH v2 2/8] KVM: TDX: Add a place holder to handle TDX VM exit Binbin Wu
2025-02-11 2:54 ` [PATCH v2 3/8] KVM: TDX: Add a place holder for handler of TDX hypercalls (TDG.VP.VMCALL) Binbin Wu
2025-02-11 8:41 ` Chao Gao
2025-02-11 9:08 ` Binbin Wu
2025-02-11 23:46 ` Sean Christopherson
2025-02-12 2:21 ` Binbin Wu
2025-02-11 2:54 ` [PATCH v2 4/8] KVM: TDX: Handle KVM hypercall with TDG.VP.VMCALL Binbin Wu
2025-02-11 23:48 ` Sean Christopherson
2025-02-11 2:54 ` [PATCH v2 5/8] KVM: TDX: Handle TDG.VP.VMCALL<MapGPA> Binbin Wu
2025-02-11 6:54 ` Yan Zhao
2025-02-11 8:11 ` Binbin Wu
2025-02-11 8:59 ` Chao Gao
2025-02-12 0:46 ` Sean Christopherson
2025-02-12 5:16 ` Binbin Wu
2025-02-12 18:56 ` Sean Christopherson
2025-02-13 3:23 ` Binbin Wu
2025-02-13 5:11 ` Binbin Wu
2025-02-13 15:17 ` Sean Christopherson
2025-02-17 3:41 ` Binbin Wu
2025-02-19 0:29 ` Sean Christopherson
2025-02-19 0:49 ` Binbin Wu
2025-02-11 2:54 ` [PATCH v2 6/8] KVM: TDX: Handle TDG.VP.VMCALL<ReportFatalError> Binbin Wu
2025-02-12 0:18 ` Sean Christopherson
2025-02-12 5:37 ` Binbin Wu
2025-02-12 13:53 ` Sean Christopherson [this message]
2025-02-11 2:54 ` [PATCH v2 7/8] KVM: TDX: Handle TDX PV port I/O hypercall Binbin Wu
2025-02-11 2:54 ` [PATCH v2 8/8] KVM: TDX: Handle TDX PV MMIO hypercall Binbin Wu
2025-02-12 2:28 ` Chao Gao
2025-02-12 2:39 ` Binbin Wu
2025-02-13 21:41 ` Edgecombe, Rick P
2025-02-14 0:47 ` Binbin Wu
2025-02-14 1:01 ` Edgecombe, Rick P
2025-02-14 1:20 ` Binbin Wu
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