From: Dave Hansen <dave.hansen@intel.com>
To: Andy Lutomirski <luto@kernel.org>, Jon Kohler <jon@nutanix.com>
Cc: Babu Moger <babu.moger@amd.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
X86 ML <x86@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Fenghua Yu <fenghua.yu@intel.com>,
Yu-cheng Yu <yu-cheng.yu@intel.com>,
Tony Luck <tony.luck@intel.com>, Uros Bizjak <ubizjak@gmail.com>,
Petteri Aimonen <jpa@git.mail.kapsi.fi>,
Kan Liang <kan.liang@linux.intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Rapoport <rppt@kernel.org>,
Benjamin Thiel <b.thiel@posteo.de>,
Fan Yang <Fan_Yang@sjtu.edu.cn>, Juergen Gross <jgross@suse.com>,
Dave Jiang <dave.jiang@intel.com>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Ricardo Neri <ricardo.neri-calderon@linux.intel.com>,
Arvind Sankar <nivedita@alum.mit.edu>,
LKML <linux-kernel@vger.kernel.org>,
kvm list <kvm@vger.kernel.org>
Subject: Re: [PATCH] KVM: x86: add hint to skip hidden rdpkru under kvm_load_host_xsave_state
Date: Mon, 17 May 2021 06:54:19 -0700 [thread overview]
Message-ID: <ccdf00d8-7957-de95-68cd-7d61ece337c0@intel.com> (raw)
In-Reply-To: <CALCETrW0_vwpbVVpc+85MvoGqg3qJA+FV=9tmUiZz6an7dQrGg@mail.gmail.com>
On 5/13/21 10:11 PM, Andy Lutomirski wrote:
> I don't even want to think about what happens if a perf NMI hits and
> accesses host user memory while the guest PKRU is live (on VMX -- I
> think this can't happen on SVM).
What's the relevant difference between SVM and VMX here? I'm missing
something.
next prev parent reply other threads:[~2021-05-17 13:54 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 16:44 [PATCH] KVM: x86: add hint to skip hidden rdpkru under kvm_load_host_xsave_state Jon Kohler
2021-05-07 16:52 ` Paolo Bonzini
2021-05-07 16:58 ` Dave Hansen
2021-05-07 17:13 ` Jon Kohler
2021-05-14 5:11 ` Andy Lutomirski
2021-05-17 2:50 ` Jon Kohler
2021-05-17 16:35 ` Tom Lendacky
2021-05-17 7:46 ` Paolo Bonzini
2021-05-17 17:39 ` Sean Christopherson
2021-05-17 17:55 ` Dave Hansen
2021-05-17 18:02 ` Sean Christopherson
[not found] ` <4e6f7056-6b66-46b9-9eac-922ae1c7b526@www.fastmail.com>
2021-05-17 17:59 ` Dave Hansen
2021-05-17 18:04 ` Sean Christopherson
2021-05-17 18:15 ` Jim Mattson
2021-05-17 18:34 ` Sean Christopherson
2021-05-19 22:44 ` Dave Hansen
2021-05-19 23:15 ` Andy Lutomirski
2021-05-17 13:54 ` Dave Hansen [this message]
2021-05-17 16:43 ` Paolo Bonzini
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