Re: [PATCH v4 0/4] x86/bus_lock: Enable bus lock detection
From: Fenghua Yu
Date: Tue Jan 26 2021 - 05:16:16 EST
Hi, Dear X86 Maintainers,
>On Mon, Jan 04, 2021 at 07:42:28PM +0000, Fenghua Yu wrote:
>
> 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.
Just a friendly reminder. Any comment on this series? There hasn't been
any comment since it was posted.
This series can be applied cleanly to v5.11-rc5 and pass all of our
tests. If you want me to repost this series, I can do that too.
Thanks!
-Fenghua