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: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 6:48 [PATCH 0/9] x86: Concurrent TLB flushes and other improvements Nadav Amit
2019-06-13 6:48 ` [PATCH 1/9] smp: Remove smp_call_function() and on_each_cpu() return values Nadav Amit
2019-06-23 12:32 ` [tip:smp/hotplug] " tip-bot for Nadav Amit
2019-06-13 6:48 ` [PATCH 2/9] smp: Run functions concurrently in smp_call_function_many() Nadav Amit
2019-06-13 6:48 ` [PATCH 3/9] x86/mm/tlb: Refactor common code into flush_tlb_on_cpus() Nadav Amit
2019-06-25 21:07 ` Dave Hansen
2019-06-26 1:57 ` Nadav Amit
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 5/9] x86/mm/tlb: Optimize local TLB flushes Nadav Amit
2019-06-25 21:36 ` Dave Hansen
2019-06-26 16:33 ` Andy Lutomirski
2019-06-26 16:39 ` Nadav Amit
2019-06-26 16:50 ` 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
2019-06-13 6:48 ` [PATCH 7/9] smp: Do not mark call_function_data as shared Nadav Amit
2019-06-23 12:31 ` [tip:smp/hotplug] " tip-bot for Nadav Amit
2019-06-13 6:48 ` [PATCH 8/9] x86/tlb: Privatize cpu_tlbstate Nadav Amit
2019-06-14 15:58 ` Sean Christopherson
2019-06-17 17:10 ` Nadav Amit
2019-06-25 21:52 ` Dave Hansen
2019-06-26 1:22 ` Nadav Amit
2019-06-26 3:57 ` Andy Lutomirski
2019-06-13 6:48 ` [PATCH 9/9] x86/apic: Use non-atomic operations when possible Nadav Amit
2019-06-23 12:16 ` [tip:x86/apic] " tip-bot for Nadav Amit
2019-06-25 21:58 ` [PATCH 9/9] " Dave Hansen
2019-06-25 22:03 ` Thomas Gleixner
2019-06-23 12:37 ` [PATCH 0/9] x86: Concurrent TLB flushes and other improvements Thomas Gleixner
2019-06-25 22:02 ` Dave Hansen
2019-06-26 1:34 ` Nadav Amit
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