linux-kernel - Re: [PATCH v2 0/2] KVM: SVM: small tweaks for sev_hardware

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

Date:   Tue,  6 Jun 2023 11:48:40 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>, pbonzini@...hat.com,
        Alexander Mikhalitsyn <alexander@...alicyn.com>
Cc:     "Stéphane Graber" <stgraber@...ntu.com>,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v2 0/2] KVM: SVM: small tweaks for sev_hardware_setup

On Mon, 22 May 2023 18:12:46 +0200, Alexander Mikhalitsyn wrote:
> KVM: SVM: enhance info printk's in SEV init
> 
> Let's print available ASID ranges for SEV/SEV-ES guests.
> This information can be useful for system administrator
> to debug if SEV/SEV-ES fails to enable.
> 
> There are a few reasons.
> SEV:
> - NPT is disabled (module parameter)
> - CPU lacks some features (sev, decodeassists)
> - Maximum SEV ASID is 0
> 
> [...]

Applied [2/2] to kvm-x86 svm, with the minor fixup.  I'll post a formal patch
for the alternative approach to "fixing" the leak, I can always circle back to
this series if this approach is preferred.

Thanks!

[2/2] KVM: SVM: enhance info printk's in SEV init
      https://github.com/kvm-x86/linux/commit/6d1bc9754b04

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