From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, Oliver Upton <oliver.upton@linux.dev>
Cc: Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>
Subject: Re: [PATCH] KVM: arm64: selftests: Cope with arch silliness in EL2 selftest
Date: Wed, 24 Sep 2025 19:38:18 +0100 [thread overview]
Message-ID: <175873909799.2373062.6729560774456739629.b4-ty@kernel.org> (raw)
In-Reply-To: <20250923173006.467455-1-oliver.upton@linux.dev>
On Tue, 23 Sep 2025 10:30:06 -0700, Oliver Upton wrote:
> Implementations without FEAT_FGT aren't required to trap the entire ID
> register space when HCR_EL2.TID3 is set. This is a terrible idea, as the
> hypervisor may need to advertise the absence of a feature to the VM
> using a negative value in a signed field, FEAT_E2H0 being a great
> example of this.
>
> Cope with uncooperative implementations in the EL2 selftest by accepting
> a zero value when FEAT_FGT is absent and otherwise only tolerating the
> expected nonzero value.
>
> [...]
Applied to next, thanks!
[1/1] KVM: arm64: selftests: Cope with arch silliness in EL2 selftest
commit: 75b2fdc1a82195997cab4836f9e511cbe8c8eb52
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
prev parent reply other threads:[~2025-09-24 18:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-23 17:30 [PATCH] KVM: arm64: selftests: Cope with arch silliness in EL2 selftest Oliver Upton
2025-09-24 18:38 ` Marc Zyngier [this message]
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