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Date: Tue, 26 Aug 2025 00:23:19 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Sean Christopherson <seanjc@google.com>
Cc: Marc Zyngier <maz@kernel.org>, Oliver Upton <oliver.upton@linux.dev>,
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Subject: Re: [PATCH 0/5] Drivers: hv: Fix NEED_RESCHED_LAZY and use common
 APIs
Message-ID: <20250825222319.GO3419281@noisy.programming.kicks-ass.net>
References: <20250825200622.3759571-1-seanjc@google.com>
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In-Reply-To: <20250825200622.3759571-1-seanjc@google.com>

On Mon, Aug 25, 2025 at 01:06:17PM -0700, Sean Christopherson wrote:
> Fix a bug where MSHV root partitions don't honor NEED_RESCHED_LAZY, and then
> deduplicate the TIF related MSHV code by turning the "kvm" entry APIs into
> more generic "virt" APIs (which ideally would have been done when MSHV root
> support was added).
> 
> Assuming all is well, maybe this could go through the tip tree?
> 
> The Hyper-V stuff and non-x86 architectures are compile-tested only.

I suspect there's more of this wreckage in the new VTL driver that
they just put in:

  https://lore.kernel.org/all/20250729051436.190703-3-namjain@linux.microsoft.com/

although ideally they rip that thing out. I don't know how that code can
ever be correct.