From: Peter Zijlstra <peterz@infradead.org>
To: Juergen Gross <jgross@suse.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>,
Jork Loeser <Jork.Loeser@microsoft.com>,
KY Srinivasan <kys@microsoft.com>,
Simon Xiao <sixiao@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
"luto@kernel.org" <luto@kernel.org>,
"hpa@zytor.com" <hpa@zytor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"rostedt@goodmis.org" <rostedt@goodmis.org>,
"andy.shevchenko@gmail.com" <andy.shevchenko@gmail.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@kernel.org" <mingo@kernel.org>,
"linux-tip-commits@vger.kernel.org"
<linux-tip-commits@vger.kernel.org>,
boris.ostrovsky@oracle.com, xen-devel@lists.xenproject.org
Subject: Re: [tip:x86/platform] x86/hyper-v: Use hypercall for remote TLB flush
Date: Fri, 11 Aug 2017 14:54:42 +0200 [thread overview]
Message-ID: <20170811125442.5nyrvcylhdrmryt2@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <8d758a18-3db4-41c3-9748-41a649b7950b@suse.com>
On Fri, Aug 11, 2017 at 02:46:41PM +0200, Juergen Gross wrote:
> Aah, okay. Now I understand the problem. The TLB isn't the issue but the
> IPI is serving two purposes here: TLB flushing (which is allowed to
> happen at any time) and serialization regarding access to critical pages
> (which seems to be broken in the Xen case as you suggest).
Indeed, and now hyper-v as well.
next prev parent reply other threads:[~2017-08-11 12:55 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-02 16:09 [PATCH v10 0/9] Hyper-V: paravirtualized remote TLB flushing and hypercall improvements Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 1/9] x86/hyper-v: include hyperv/ only when CONFIG_HYPERV is set Vitaly Kuznetsov
2017-08-10 16:37 ` [tip:x86/platform] x86/hyper-v: Include " tip-bot for Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 2/9] x86/hyper-v: make hv_do_hypercall() inline Vitaly Kuznetsov
2017-08-10 16:37 ` [tip:x86/platform] x86/hyper-v: Make " tip-bot for Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 3/9] x86/hyper-v: fast hypercall implementation Vitaly Kuznetsov
2017-08-10 16:37 ` [tip:x86/platform] x86/hyper-v: Introduce " tip-bot for Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 4/9] hyper-v: use fast hypercall for HVCALL_SIGNAL_EVENT Vitaly Kuznetsov
2017-08-10 16:38 ` [tip:x86/platform] hyper-v: Use " tip-bot for Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 5/9] x86/hyper-v: implement rep hypercalls Vitaly Kuznetsov
2017-08-10 16:38 ` [tip:x86/platform] x86/hyper-v: Implement " tip-bot for Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 6/9] hyper-v: globalize vp_index Vitaly Kuznetsov
2017-08-10 16:39 ` [tip:x86/platform] hyper-v: Globalize vp_index tip-bot for Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 7/9] x86/hyper-v: use hypercall for remote TLB flush Vitaly Kuznetsov
2017-08-10 16:39 ` [tip:x86/platform] x86/hyper-v: Use " tip-bot for Vitaly Kuznetsov
2017-08-10 18:21 ` tip-bot for Vitaly Kuznetsov
2017-08-10 18:56 ` Peter Zijlstra
2017-08-10 18:59 ` KY Srinivasan
2017-08-10 19:08 ` Jork Loeser
2017-08-10 19:27 ` Peter Zijlstra
2017-08-11 1:15 ` Jork Loeser
2017-08-11 9:03 ` Peter Zijlstra
2017-08-11 11:29 ` Kirill A. Shutemov
2017-08-11 16:16 ` Linus Torvalds
2017-08-11 16:26 ` Peter Zijlstra
2017-08-14 13:20 ` Vitaly Kuznetsov
2017-08-16 16:42 ` Vitaly Kuznetsov
2017-08-16 21:41 ` Boris Ostrovsky
2017-08-17 7:58 ` Vitaly Kuznetsov
2017-08-11 9:23 ` Vitaly Kuznetsov
2017-08-11 10:56 ` Peter Zijlstra
2017-08-11 11:05 ` [Xen-devel] " Andrew Cooper
2017-08-11 12:07 ` Peter Zijlstra
2017-08-16 0:02 ` Steven Rostedt
2017-08-11 12:22 ` Juergen Gross
2017-08-11 12:35 ` Peter Zijlstra
2017-08-11 12:46 ` Juergen Gross
2017-08-11 12:54 ` Peter Zijlstra [this message]
2017-08-11 13:07 ` Juergen Gross
2017-08-11 13:39 ` Peter Zijlstra
2017-08-02 16:09 ` [PATCH v10 8/9] x86/hyper-v: support extended CPU ranges for TLB flush hypercalls Vitaly Kuznetsov
2017-08-31 20:01 ` [tip:x86/platform] x86/hyper-v: Support " tip-bot for Vitaly Kuznetsov
2017-08-02 16:09 ` [PATCH v10 9/9] tracing/hyper-v: trace hyperv_mmu_flush_tlb_others() Vitaly Kuznetsov
2017-08-31 20:01 ` [tip:x86/platform] tracing/hyper-v: Trace hyperv_mmu_flush_tlb_others() tip-bot for Vitaly Kuznetsov
2017-08-10 11:58 ` [PATCH v10 0/9] Hyper-V: paravirtualized remote TLB flushing and hypercall improvements Vitaly Kuznetsov
2017-08-10 15:12 ` Ingo Molnar
2017-08-10 15:17 ` Vitaly Kuznetsov
2017-08-10 16:03 ` Ingo Molnar
2017-08-10 17:00 ` Vitaly Kuznetsov
2017-08-31 11:43 ` Vitaly Kuznetsov
2017-08-31 12:22 ` Ingo Molnar
2017-08-31 14:53 ` Vitaly Kuznetsov
2017-08-31 20:01 ` Ingo Molnar
2017-11-06 8:43 ` Wanpeng Li
2017-11-06 9:14 ` Vitaly Kuznetsov
2017-11-06 9:57 ` Wanpeng Li
2017-11-06 10:10 ` Vitaly Kuznetsov
2017-11-06 11:07 ` Wanpeng Li
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