From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
kvm@vger.kernel.org
Cc: Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Zenghui Yu <yuzenghui@huawei.com>, Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCH 7/7] KVM: arm64: Make ID_AA64PFR0_EL1.RAS writable
Date: Mon, 21 Jul 2025 11:19:55 +0100 [thread overview]
Message-ID: <20250721101955.535159-8-maz@kernel.org> (raw)
In-Reply-To: <20250721101955.535159-1-maz@kernel.org>
Make ID_AA64PFR0_EL1.RAS writable so that we can restore a VM from
a system without RAS to a RAS-equipped machine (or disable RAS
in the guest).
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kvm/sys_regs.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 549766d7abca8..64707c62f1cf9 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2946,7 +2946,6 @@ static const struct sys_reg_desc sys_reg_descs[] = {
~(ID_AA64PFR0_EL1_AMU |
ID_AA64PFR0_EL1_MPAM |
ID_AA64PFR0_EL1_SVE |
- ID_AA64PFR0_EL1_RAS |
ID_AA64PFR0_EL1_AdvSIMD |
ID_AA64PFR0_EL1_FP)),
ID_FILTERED(ID_AA64PFR1_EL1, id_aa64pfr1_el1,
--
2.39.2
next prev parent reply other threads:[~2025-07-21 11:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-21 10:19 [PATCH 0/7] KVM: arm64: FEAT_RASv1p1 support and RAS selection Marc Zyngier
2025-07-21 10:19 ` [PATCH 1/7] arm64: Add capability denoting FEAT_RASv1p1 Marc Zyngier
2025-07-21 13:52 ` Catalin Marinas
2025-07-21 10:19 ` [PATCH 2/7] KVM: arm64: Filter out HCR_EL2 bits when running in hypervisor context Marc Zyngier
2025-07-21 10:19 ` [PATCH 3/7] KVM: arm64: Make RAS registers UNDEF when RAS isn't advertised Marc Zyngier
2025-07-21 10:19 ` [PATCH 4/7] KVM: arm64: Handle RASv1p1 registers Marc Zyngier
2025-07-21 13:08 ` Marc Zyngier
2025-07-21 10:19 ` [PATCH 5/7] KVM: arm64: Ignore HCR_EL2.FIEN set by L1 guest's EL2 Marc Zyngier
2025-07-21 10:19 ` [PATCH 6/7] KVM: arm64: Expose FEAT_RASv1p1 in a canonical manner Marc Zyngier
2025-07-21 12:32 ` Cornelia Huck
2025-07-21 12:55 ` Marc Zyngier
2025-07-21 13:12 ` Cornelia Huck
2025-07-21 13:33 ` Marc Zyngier
2025-07-21 10:19 ` Marc Zyngier [this message]
2025-07-21 22:24 ` (subset) [PATCH 0/7] KVM: arm64: FEAT_RASv1p1 support and RAS selection Oliver Upton
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