Re: [PATCH v2 2/2] x86/hyperv: fix invalid writes to MSRs during root partition kexec

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To: "Michael Kelley (LINUX)" <mikelley@xxxxxxxxxxxxx>
Subject: Re: [PATCH v2 2/2] x86/hyperv: fix invalid writes to MSRs during root partition kexec
From: Wei Liu <wei.liu@xxxxxxxxxx>
Date: Thu, 27 Oct 2022 19:16:49 +0000
Cc: Anirudh Rayabharam <anrayabh@xxxxxxxxxxxxxxxxxxx>, KY Srinivasan <kys@xxxxxxxxxxxxx>, Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>, Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>, "wei.liu@xxxxxxxxxx" <wei.liu@xxxxxxxxxx>, Dexuan Cui <decui@xxxxxxxxxxxxx>, "tglx@xxxxxxxxxxxxx" <tglx@xxxxxxxxxxxxx>, "mingo@xxxxxxxxxx" <mingo@xxxxxxxxxx>, "bp@xxxxxxxxx" <bp@xxxxxxxxx>, "dave.hansen@xxxxxxxxxxxxxxx" <dave.hansen@xxxxxxxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, "hpa@xxxxxxxxx" <hpa@xxxxxxxxx>, "daniel.lezcano@xxxxxxxxxx" <daniel.lezcano@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, "linux-hyperv@xxxxxxxxxxxxxxx" <linux-hyperv@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-arch@xxxxxxxxxxxxxxx" <linux-arch@xxxxxxxxxxxxxxx>, "stanislav.kinsburskiy@xxxxxxxxx" <stanislav.kinsburskiy@xxxxxxxxx>, "kumarpraveen@xxxxxxxxxxxxxxxxxxx" <kumarpraveen@xxxxxxxxxxxxxxxxxxx>, "mail@xxxxxxxxxxxxx" <mail@xxxxxxxxxxxxx>
In-reply-to: <BYAPR21MB168872A298C1CDC140FBF454D7339@BYAPR21MB1688.namprd21.prod.outlook.com>
References: <20221027095729.1676394-1-anrayabh@linux.microsoft.com> <20221027095729.1676394-3-anrayabh@linux.microsoft.com> <BYAPR21MB168872A298C1CDC140FBF454D7339@BYAPR21MB1688.namprd21.prod.outlook.com>

On Thu, Oct 27, 2022 at 01:44:40PM +0000, Michael Kelley (LINUX) wrote:
> From: Anirudh Rayabharam <anrayabh@xxxxxxxxxxxxxxxxxxx> Sent: Thursday, October 27, 2022 2:57 AM
> > 
> > hv_cleanup resets the hypercall page by setting the MSR to 0. However,
> 
> The function name is hyperv_cleanup(), not hv_cleanup().

I fixed this and applied both patches to hyperv-fixes. Thank you both.

Follow-Ups:
- Re: [PATCH v2 2/2] x86/hyperv: fix invalid writes to MSRs during root partition kexec
  - From: Anirudh Rayabharam

References:
- [PATCH v2 0/2] Fix MSR access errors during kexec in root partition
  - From: Anirudh Rayabharam
- [PATCH v2 2/2] x86/hyperv: fix invalid writes to MSRs during root partition kexec
  - From: Anirudh Rayabharam
- RE: [PATCH v2 2/2] x86/hyperv: fix invalid writes to MSRs during root partition kexec
  - From: Michael Kelley (LINUX)

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