From: Borislav Petkov <bp@alien8.de>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
"Nadav Amit" <nadav.amit@gmail.com>,
"Andy Lutomirski" <luto@amacapital.net>,
"Peter Zijlstra" <peterz@infradead.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"Ingo Molnar" <mingo@redhat.com>,
"Joerg Roedel" <joro@8bytes.org>,
kvm@vger.kernel.org, "Radim Krčmář" <rkrcmar@redhat.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
x86@kernel.org
Subject: Re: [PATCH 3/5] x86/kvm: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
Date: Mon, 1 Apr 2019 09:33:52 +0200 [thread overview]
Message-ID: <20190401073352.GB28264@zn.tnic> (raw)
In-Reply-To: <86dc0d5c-88af-dddc-4618-1a0a5a545e5f@redhat.com>
On Mon, Apr 01, 2019 at 09:24:06AM +0200, Paolo Bonzini wrote:
> The MSR reads and writes are not done in the common case. Also, you
> cannot really expect boot_cpu_data to be in L1 in these functions since
> they run after the guest---or if they do, each L1 line you fill in with
> host data is one line you "steal" from the guest.
Ok, fair enough. I'll drop this patch.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
prev parent reply other threads:[~2019-04-01 7:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190330112022.28888-1-bp@alien8.de>
2019-03-30 11:20 ` [PATCH 3/5] x86/kvm: Convert some slow-path static_cpu_has() callers to boot_cpu_has() Borislav Petkov
2019-03-31 14:20 ` Paolo Bonzini
2019-03-31 15:12 ` Borislav Petkov
2019-04-01 7:24 ` Paolo Bonzini
2019-04-01 7:33 ` Borislav Petkov [this message]
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