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Re: [Xen-devel] [PATCH v9 00/15] improve late microcode loading
- To: Chao Gao <chao.gao@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>
- Date: Thu, 22 Aug 2019 08:51:43 +0100
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- Cc: "sergey.dyasli@xxxxxxxxxx >> Sergey Dyasli" <sergey.dyasli@xxxxxxxxxx>, Ashok Raj <ashok.raj@xxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Brian Woods <brian.woods@xxxxxxx>, Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Thu, 22 Aug 2019 07:51:57 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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Hi Chao,
On 19/08/2019 02:25, Chao Gao wrote:
> Previous change log:
> Changes in version 8:
> - block #NMI handling during microcode loading (Patch 16)
> - Don't assume that all CPUs in the system have loaded a same ucode.
> So when parsing a blob, we attempt to save a patch as long as it matches
> with current cpu signature regardless of the revision of the patch.
> And also for loading, we only require the patch to be loaded isn't old
> than the cached one.
> - store an update after the first successful loading on a CPU
> - remove the patch that calls wbinvd() unconditionally before microcode>
> loading. It is under internal discussion.
I noticed that you removed the patch which adds wbinvd() back in v8.
What was the reasoning behind that and is there any outcome from the
internal discussion that you mention here?
> - divide two big patches into several patches to improve readability.
Thanks,
Sergey
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