From: Paolo Bonzini <pbonzini@redhat.com>
To: Sean Christopherson <seanjc@google.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
jmattson@google.com, stable@vger.kernel.org
Subject: Re: [PATCH v2] KVM: x86: Allow guests to see MSR_IA32_TSX_CTRL even if tsx=off
Date: Mon, 1 Feb 2021 10:08:22 +0100 [thread overview]
Message-ID: <618c5513-5092-f7cd-b47b-933936001180@redhat.com> (raw)
In-Reply-To: <37be5fb8-056f-8fba-3016-464634e069af@redhat.com>
On 01/02/21 09:46, Paolo Bonzini wrote:
>>
>> This comment be updated to call out the new TSX_CTRL behavior.
>>
>> /*
>> * On TAA affected systems:
>> * - nothing to do if TSX is disabled on the host.
>> * - we emulate TSX_CTRL if present on the host.
>> * This lets the guest use VERW to clear CPU buffers.
>> */
>
> Ok.
Hmm, but the comment is even more accurate now than before, isn't it?
It said nothing about hiding TSX_CTRL, so now it matches the code below.
Paolo
next prev parent reply other threads:[~2021-02-01 9:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-29 10:19 [PATCH v2] KVM: x86: Allow guests to see MSR_IA32_TSX_CTRL even if tsx=off Paolo Bonzini
2021-01-29 16:58 ` Sean Christopherson
2021-02-01 8:46 ` Paolo Bonzini
2021-02-01 9:08 ` Paolo Bonzini [this message]
2021-02-01 16:38 ` Sean Christopherson
2021-02-01 17:34 ` Paolo Bonzini
2021-02-01 17:36 ` Sean Christopherson
2021-02-01 17:03 ` Sean Christopherson
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