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>
Subject: Re: [PATCH 2/2] powerpc/pseries: Skip vpa_init() for boot cpu in smp_setup_cpu()
Date: Thu, 30 Jul 2026 11:11:53 +0530 [thread overview]
Message-ID: <178538948384.1278583.1321591910444981709.b4-ty@linux.ibm.com> (raw)
In-Reply-To: <20260708015842.274690-1-vaibhav@linux.ibm.com>
On Wed, 08 Jul 2026 07:28:40 +0530, Vaibhav Jain wrote:
> During pSeries_setup_arch(), VPA for boot-cpu is first to be
> initialized. However later in the boot, smp_setup_cpu() is called for
> setting up VPA on boot and secondary cpus that were brought online. This
> results in vpa_init() being called twice for boot-cpu and three redundant
> H_REGISTER_VPA hcalls being made to the hypervisor.
>
> Fix this by adding an extra condition in smp_set_cpu() to call vpa_init()
> only on non boot-cpus.
>
> [...]
Applied to powerpc/fixes.
[2/2] powerpc/pseries: Skip vpa_init() for boot cpu in smp_setup_cpu()
https://git.kernel.org/powerpc/c/8f45abd50aaa4155a72ec539f371dafb039786df
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 2/2] powerpc/pseries: Skip vpa_init() for boot cpu in smp_setup_cpu() Vaibhav Jain
2026-07-30 5:41 ` Madhavan Srinivasan [this message]
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