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Re: [PATCH 1/2] sched/isolation: Make HK_TYPE_KTHREAD an alias of HK_TYP

To: longman@xxxxxxxxxx
Subject: Re: [PATCH 1/2] sched/isolation: Make HK_TYPE_KTHREAD an alias of HK_TYPE_DOMAIN
Cc: linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, lvs-devel@xxxxxxxxxxxxxxx, linux-sched@xxxxxxxxxxxxxxx, kuba@xxxxxxxxxx, pabeni@xxxxxxxxxx, horms@xxxxxxxxxx, David Dull <monderasdor@xxxxxxxxx>
From: David Dull <monderasdor@xxxxxxxxx>
Date: Tue, 24 Mar 2026 20:59:29 +0200
I went through the series.

Patch 1 correctly updates HK_TYPE_KTHREAD to reflect the post-041ee6f3727a
behavior where kthreads follow HK_TYPE_DOMAIN. Keeping it mapped to
HK_TYPE_KERNEL_NOISE is no longer accurate, so the alias is the right fix.

Patch 2 properly introduces RCU protection for accessing the
HK_TYPE_KTHREAD/HK_TYPE_DOMAIN cpumask in IPVS. Since the mask can now
change at runtime, guarding against potential UAF is required. The
changes are minimal and the helper wrappers keep call sites clean.

Reviewed-by: David Dull <monderasdor@xxxxxxxxx>

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