linux-kernel - Re: [PATCH v2 00/10] KVM: x86: Clean up MSR access/failure handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <172443897959.4130036.5832329559174205887.b4-ty@google.com>
Date: Fri, 23 Aug 2024 16:47:47 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Tom Lendacky <thomas.lendacky@....com>, Weijiang Yang <weijiang.yang@...el.com>
Subject: Re: [PATCH v2 00/10] KVM: x86: Clean up MSR access/failure handling

On Fri, 02 Aug 2024 11:19:25 -0700, Sean Christopherson wrote:
> Rework KVM's MSR access handling, and more specific the handling of failures,
> to begin the march towards removing host_initiated exemptions for CPUID
> checks, e.g. to eventually turn code like this:
> 
> 		if (!msr_info->host_initiated &&
> 		    !guest_cpuid_has(vcpu, X86_FEATURE_XSAVES))
> 			return 1;
> 
> [...]

Applied to kvm-x86 misc, thanks!

[01/10] KVM: SVM: Disallow guest from changing userspace's MSR_AMD64_DE_CFG value
        https://github.com/kvm-x86/linux/commit/74a0e79df68a
[02/10] KVM: x86: Move MSR_TYPE_{R,W,RW} values from VMX to x86, as enums
        https://github.com/kvm-x86/linux/commit/b58b808cbe93
[03/10] KVM: x86: Rename KVM_MSR_RET_INVALID to KVM_MSR_RET_UNSUPPORTED
        https://github.com/kvm-x86/linux/commit/aaecae7b6a2b
[04/10] KVM: x86: Refactor kvm_x86_ops.get_msr_feature() to avoid kvm_msr_entry
        https://github.com/kvm-x86/linux/commit/74c6c98a598a
[05/10] KVM: x86: Rename get_msr_feature() APIs to get_feature_msr()
        https://github.com/kvm-x86/linux/commit/b848f24bd74a
[06/10] KVM: x86: Refactor kvm_get_feature_msr() to avoid struct kvm_msr_entry
        https://github.com/kvm-x86/linux/commit/7075f1636150
[07/10] KVM: x86: Funnel all fancy MSR return value handling into a common helper
        https://github.com/kvm-x86/linux/commit/1cec2034980a
[08/10] KVM: x86: Hoist x86.c's global msr_* variables up above kvm_do_msr_access()
        https://github.com/kvm-x86/linux/commit/3adef9034596
[09/10] KVM: x86: Suppress failures on userspace access to advertised, unsupported MSRs
        https://github.com/kvm-x86/linux/commit/64a5d7a1091f
[10/10] KVM: x86: Suppress userspace access failures on unsupported, "emulated" MSRs
        https://github.com/kvm-x86/linux/commit/44dd0f5732b4

--
https://github.com/kvm-x86/linux/tree/next