From: "Huang, Kai" <kai.huang@intel.com>
To: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"seanjc@google.com" <seanjc@google.com>,
"binbin.wu@linux.intel.com" <binbin.wu@linux.intel.com>
Cc: "Gao, Chao" <chao.gao@intel.com>,
"Edgecombe, Rick P" <rick.p.edgecombe@intel.com>,
"Li, Xiaoyao" <xiaoyao.li@intel.com>,
"Lindgren, Tony" <tony.lindgren@intel.com>,
"Hunter, Adrian" <adrian.hunter@intel.com>,
"Chatre, Reinette" <reinette.chatre@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Zhao, Yan Y" <yan.y.zhao@intel.com>,
"Yamahata, Isaku" <isaku.yamahata@intel.com>
Subject: Re: [PATCH v2 1/8] KVM: x86: Have ____kvm_emulate_hypercall() read the GPRs
Date: Tue, 11 Feb 2025 05:05:10 +0000 [thread overview]
Message-ID: <2aa9a47831205744f826b66e20001b2c6fde6d68.camel@intel.com> (raw)
In-Reply-To: <20250211025442.3071607-2-binbin.wu@linux.intel.com>
On Tue, 2025-02-11 at 10:54 +0800, Binbin Wu wrote:
> Have ____kvm_emulate_hypercall() read the GPRs instead of passing them
> in via the macro.
>
> When emulating KVM hypercalls via TDVMCALL, TDX will marshall registers of
> TDVMCALL ABI into KVM's x86 registers to match the definition of KVM
> hypercall ABI _before_ ____kvm_emulate_hypercall() gets called. Therefore,
> ____kvm_emulate_hypercall() can just read registers internally based on KVM
> hypercall ABI, and those registers can be removed from the
> __kvm_emulate_hypercall() macro.
>
> Also, op_64_bit can be determined inside ____kvm_emulate_hypercall(),
> remove it from the __kvm_emulate_hypercall() macro as well.
>
> No functional change intended.
>
>
Reviewed-by: Kai Huang <kai.huang@intel.com>
next prev parent reply other threads:[~2025-02-11 5:05 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 [this message]
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
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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