From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: x86: emulate reserved nops from 0f/18 to 0f/1f
Date: Tue, 19 May 2020 08:32:44 -0700 [thread overview]
Message-ID: <20200519153244.GB13603@linux.intel.com> (raw)
In-Reply-To: <be7fa327-51b9-1f95-454d-f4f9c15a1b63@redhat.com>
On Tue, May 19, 2020 at 10:06:25AM +0200, Paolo Bonzini wrote:
> On 19/05/20 09:55, Sean Christopherson wrote:
> > Tangentially related, isn't the whole fastop thing doomed once CET kernel
> > support lands?
>
> Why? You do need to add endbr markers and some of the fastop handlers
> won't fit in 8 bytes, but that should be it.
Never mind, had a brain fart and forgot CALL_NOSPEC shouldn't get patched
to a retpoline on CET capable CPUs.
prev parent reply other threads:[~2020-05-19 15:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-15 16:19 [PATCH] KVM: x86: emulate reserved nops from 0f/18 to 0f/1f Paolo Bonzini
2020-05-18 16:07 ` Sean Christopherson
2020-05-18 17:37 ` Paolo Bonzini
2020-05-19 6:02 ` Sean Christopherson
2020-05-19 7:43 ` Paolo Bonzini
2020-05-19 7:55 ` Sean Christopherson
2020-05-19 8:06 ` Paolo Bonzini
2020-05-19 15:32 ` Sean Christopherson [this message]
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