[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <X/NvodZcfmcgn/44@otcwcpicx6.sc.intel.com>
Date: Mon, 4 Jan 2021 19:42:25 +0000
From: Fenghua Yu <fenghua.yu@...el.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
Tony Luck <tony.luck@...el.com>,
Randy Dunlap <rdunlap@...radead.org>,
Xiaoyao Li <xiaoyao.li@...el.com>,
Ravi V Shankar <ravi.v.shankar@...el.com>
Cc: linux-kernel <linux-kernel@...r.kernel.org>, x86 <x86@...nel.org>
Subject: Re: [PATCH v4 0/4] x86/bus_lock: Enable bus lock detection
Hi, Dear X86 Maintainers,
On Tue, Nov 24, 2020 at 08:52:41PM +0000, Fenghua Yu wrote:
> A bus lock [1] is acquired through either split locked access to
> writeback (WB) memory or any locked access to non-WB memory. This is
> typically >1000 cycles slower than an atomic operation within
> a cache line. It also disrupts performance on other cores.
This is a friendly reminder. Any comment on this series?
Thanks.
-Fenghua
Powered by blists - more mailing lists