From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: Andy Lutomirski <luto@kernel.org>, Nadav Amit <namit@vmware.com>
Cc: Dave Hansen <dave.hansen@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
the arch/x86 maintainers <x86@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
"kvm\@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH 6/9] KVM: x86: Provide paravirtualized flush_tlb_multi()
Date: Wed, 26 Jun 2019 19:41:29 +0200 [thread overview]
Message-ID: <878stockhi.fsf@vitty.brq.redhat.com> (raw)
In-Reply-To: <CALCETrW2kudQ-nt7KFKRizNjBAzDVfLW7qQRJmkuigSmsYBFhg@mail.gmail.com>
Andy Lutomirski <luto@kernel.org> writes:
> All this being said, do we currently have any system that supports
> PCID *and* remote flushes? I guess KVM has some mechanism, but I'm
> not that familiar with its exact capabilities. If I remember right,
> Hyper-V doesn't expose PCID yet.
>
It already does (and support it to certain extent), see
commit 617ab45c9a8900e64a78b43696c02598b8cad68b
Author: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Wed Jan 24 11:36:29 2018 +0100
x86/hyperv: Stop suppressing X86_FEATURE_PCID
--
Vitaly
next prev parent reply other threads:[~2019-06-26 17:41 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190613064813.8102-1-namit@vmware.com>
2019-06-13 6:48 ` [PATCH 4/9] x86/mm/tlb: Flush remote and local TLBs concurrently Nadav Amit
2019-06-25 21:29 ` Dave Hansen
2019-06-26 2:35 ` Nadav Amit
2019-06-26 3:00 ` Dave Hansen
2019-06-26 3:32 ` Nadav Amit
2019-06-26 3:36 ` Andy Lutomirski
2019-06-26 3:48 ` Nadav Amit
2019-06-26 3:51 ` Andy Lutomirski
2019-06-13 6:48 ` [PATCH 6/9] KVM: x86: Provide paravirtualized flush_tlb_multi() Nadav Amit
2019-06-25 21:40 ` Dave Hansen
2019-06-26 2:39 ` Nadav Amit
2019-06-26 3:35 ` Andy Lutomirski
2019-06-26 3:41 ` Nadav Amit
2019-06-26 3:56 ` Andy Lutomirski
2019-06-26 6:30 ` Nadav Amit
2019-06-26 16:37 ` Andy Lutomirski
2019-06-26 17:41 ` Vitaly Kuznetsov [this message]
2019-06-26 18:21 ` Andy Lutomirski
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