linux-kernel - Re: [PATCH v14 00/22] Enable CET Virtualization

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Message-ID: <aMHDmGmW8QzyDv7X@google.com>
Date: Wed, 10 Sep 2025 11:29:44 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Chao Gao <chao.gao@...el.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, acme@...hat.com, 
	bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com, john.allen@....com, 
	mingo@...nel.org, mingo@...hat.com, minipli@...ecurity.net, 
	mlevitsk@...hat.com, namhyung@...nel.org, pbonzini@...hat.com, 
	prsampat@....com, rick.p.edgecombe@...el.com, shuah@...nel.org, 
	tglx@...utronix.de, x86@...nel.org, xin@...or.com, xiaoyao.li@...el.com
Subject: Re: [PATCH v14 00/22] Enable CET Virtualization

On Tue, Sep 09, 2025, Chao Gao wrote:
> On Tue, Sep 09, 2025 at 02:39:31AM -0700, Chao Gao wrote:
> >The FPU support for CET virtualization has already been merged into 6.17-rc1.
> >Building on that, this series introduces Intel CET virtualization support for
> >KVM.
> >
> >Changes in v14
> >1. rename the type of guest SSP register to KVM_X86_REG_KVM and add docs
> >   for register IDs in api.rst (Sean, Xiaoyao)
> >2. update commit message of patch 1
> >3. use rdmsrq/wrmsrq() instead of rdmsrl/wrmsrl() in patch 6 (Xin)
> >4. split the introduction of per-guest guest_supported_xss into a
> >separate patch. (Xiaoyao)
> >5. make guest FPU and VMCS consistent regarding MSR_IA32_S_CET
> >6. collect reviews from Xiaoyao.
> 
> (Removed Weijiang's Intel email as it is bouncing)

Yeah, I'll try to remember to filter it out.  I'll post a v15, I have a decent
number of local changes and fixes (see responses, hopefully I captured everything),
along with a more comprehensive selftest.