From: Andrew Cooper <Andrew.Cooper3@citrix.com>
To: xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH 0/2] x86/spec-ctrl: Reduce HVM RSB overhead
Date: Thu, 11 Aug 2022 10:55:01 +0000 [thread overview]
Message-ID: <65cb8f97-9049-abb8-0fbb-80069da998f8@citrix.com> (raw)
In-Reply-To: <20220809170016.25148-1-andrew.cooper3@citrix.com>
On 09/08/2022 18:00, Andrew Cooper wrote:
> Xen happens to be not vulnerable to PBRSB, but it turns out we can improve the
> performance on all eIBRS systems.
>
> Andrew Cooper (2):
> x86/spec-ctrl: Enumeration for PBRSB_NO
> x86/spec-ctrl: Reduce HVM RSB overhead where possible
Network perf testing on IceLake Server says this turns into a 2% guest
bandwidth improvement.
~Andrew
prev parent reply other threads:[~2022-08-11 10:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-09 17:00 [PATCH 0/2] x86/spec-ctrl: Reduce HVM RSB overhead Andrew Cooper
2022-08-09 17:00 ` [PATCH 1/2] x86/spec-ctrl: Enumeration for PBRSB_NO Andrew Cooper
2022-08-10 7:10 ` Jan Beulich
2022-08-09 17:00 ` [PATCH 2/2] x86/spec-ctrl: Reduce HVM RSB overhead where possible Andrew Cooper
2022-08-09 20:20 ` Jason Andryuk
2022-08-11 17:05 ` Andrew Cooper
2022-08-10 8:00 ` Jan Beulich
2022-08-11 18:06 ` Andrew Cooper
2022-08-11 10:55 ` Andrew Cooper [this message]
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