From: Madhavan Srinivasan <maddy@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
kvm-ppc@vger.kernel.org, Vaibhav Jain <vaibhav@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
Anushree Mathur <anushree.mathur@linux.ibm.com>
Subject: Re: [PATCH 1/2] powerpc/pseries: Ensure vpa,slb_shadow & dtl are unregistered during crash
Date: Thu, 30 Jul 2026 11:11:49 +0530 [thread overview]
Message-ID: <178538948384.1278583.17569895854995042280.b4-ty@linux.ibm.com> (raw)
In-Reply-To: <20260708015802.274271-1-vaibhav@linux.ibm.com>
On Wed, 08 Jul 2026 07:28:00 +0530, Vaibhav Jain wrote:
> Currently pseries_kexec_cpu_down() skips unregistering vpa, slb_shadow and
> dtl areas during a crash and kexec shutdown path. It was done to avoid
> doing an HCALL while crashing. However recently Anushree reported that
> during kernel crash while the kdump kernel was coming up, Hypervisor
> reported invalid values for 'vpa.yield_count' while it dispatching L2-KVM
> Guest vcpus. The error manifested as debug build Hypervisor assert
> triggering to indicate possible VPA corruption.
>
> [...]
Applied to powerpc/fixes.
[1/2] powerpc/pseries: Ensure vpa,slb_shadow & dtl are unregistered during crash
https://git.kernel.org/powerpc/c/810d07fb4cf7577847f85a6fd6273b69cad8d580
cheers
prev parent reply other threads:[~2026-07-30 5:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-08 1:58 [PATCH 1/2] powerpc/pseries: Ensure vpa,slb_shadow & dtl are unregistered during crash Vaibhav Jain
2026-07-30 5:41 ` Madhavan Srinivasan [this message]
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