From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
Oliver Upton <oupton@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>
Subject: Re: [PATCH v2] KVM: arm64: Don't populate TPIDR_EL2 in finalise_el2()
Date: Wed, 27 May 2026 15:32:50 +0100 [thread overview]
Message-ID: <177989236079.1515680.15500441600167629178.b4-ty@kernel.org> (raw)
In-Reply-To: <20260518153127.6078-1-will@kernel.org>
On Mon, 18 May 2026 16:31:26 +0100, Will Deacon wrote:
> Currently, it is not necessary for __finalise_el2() to configure
> TPIDR_EL2:
>
> * The hyp stub code does not consume the value of TPIDR_EL2.
>
> * On the boot cpu, TPIDR_EL1 is used for the percpu offset until the
> ARM64_HAS_VIRT_HOST_EXTN cpucap is detected and boot alternatives
> are patched. Before boot alternatives are patched,
> cpu_copy_el2regs() will copy TPIDR_EL1 into TPIDR_EL2. It is not
> necessary for __finalise_el2() to initialise TPIDR_EL2 before this.
>
> [...]
Applied to next, thanks!
[1/1] KVM: arm64: Don't populate TPIDR_EL2 in finalise_el2()
commit: 4cceeb8da363ac5127b147ee7345104743f53e9d
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
prev parent reply other threads:[~2026-05-27 14:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-18 15:31 [PATCH v2] KVM: arm64: Don't populate TPIDR_EL2 in finalise_el2() Will Deacon
2026-05-18 15:39 ` Marc Zyngier
2026-05-18 15:41 ` Marc Zyngier
2026-05-18 15:55 ` Will Deacon
2026-05-27 14:32 ` Marc Zyngier [this message]
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