From: Alexandru Elisei <alexandru.elisei@arm.com>
To: maz@kernel.org, oupton@kernel.org, fuad.tabba@linux.dev,
joey.gouly@arm.com, seiden@linux.ibm.com, suzuki.poulose@arm.com,
yuzenghui@huawei.com, linux-arm-kernel@lists.infradead.org,
kvmarm@lists.linux.dev, will@kernel.org, mark.rutland@arm.com,
linux-perf-users@vger.kernel.org, catalin.marinas@arm.com,
james.clark@linaro.org
Subject: [RFC PATCH v7 08/28] HACK! KVM: arm64: Disable SPE virtualization if protected KVM is enabled
Date: Thu, 3 Sep 2026 17:06:03 +0100 [thread overview]
Message-ID: <20260903160623.315525-9-alexandru.elisei@arm.com> (raw)
In-Reply-To: <20260903160623.315525-1-alexandru.elisei@arm.com>
For RFC only.
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
arch/arm64/kvm/spe.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/kvm/spe.c b/arch/arm64/kvm/spe.c
index 646806a60d66..97160d1fae81 100644
--- a/arch/arm64/kvm/spe.c
+++ b/arch/arm64/kvm/spe.c
@@ -22,6 +22,10 @@ void kvm_spe_add_instance(struct arm_spe_pmu *spe_pmu)
{
struct spe_pmu_entry *entry;
+ /* TODO: pKVM support */
+ if (is_protected_kvm_enabled())
+ return;
+
guard(mutex)(&spe_pmus_lock);
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
--
2.43.0
next prev parent reply other threads:[~2026-09-03 16:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-03 16:05 [RFC PATCH v7 00/28] KVM: arm64: Add Statistical Profiling Extension (SPE) support Alexandru Elisei
2026-09-03 16:05 ` [RFC PATCH v7 01/28] arm64/sysreg: Add the nVM field to PMBLIMITR_EL1 Alexandru Elisei
2026-09-03 16:05 ` [RFC PATCH v7 02/28] arm64/sysreg: Define MDCR_EL2.E2PB values Alexandru Elisei
2026-09-03 16:05 ` [RFC PATCH v7 03/28] KVM: arm64: Add CONFIG_KVM_ARM_SPE Kconfig option Alexandru Elisei
2026-09-03 16:05 ` [RFC PATCH v7 04/28] perf: arm_spe_pmu: Move struct arm_spe_pmu to a separate header file Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 05/28] perf: arm_spe_pmu: Add PMBIDR_EL1 and PMSIDR_EL1 to struct arm_spe_pmu Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 06/28] KVM: arm64: Add KVM_CAP_ARM_SPE capability Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 07/28] KVM: arm64: Add KVM_ARM_VCPU_SPE VCPU feature Alexandru Elisei
2026-09-03 16:06 ` Alexandru Elisei [this message]
2026-09-03 16:06 ` [RFC PATCH v7 09/28] HACK! KVM: arm64: Enable SPE virtualization only in VHE mode Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 10/28] HACK! KVM: arm64: Disable SPE virtualization if nested virt is enabled Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 11/28] KVM: arm64: Add a new VCPU device control group for SPE Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 12/28] KVM: arm64: Add SPE VCPU device attribute to set the interrupt number Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 13/28] KVM: arm64: Add SPE VCPU device attribute to set the SPE device Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 14/28] KVM: arm64: Add SPE VCPU device attribute to initialize SPE Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 15/28] KVM: arm64: Use PMSVer from the assigned SPE instance Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 16/28] KVM: arm64: Add SPE system registers to VCPU context Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 17/28] KVM: arm64: Apply a RES0 mask to PMBLIMITR_EL1 writes Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 18/28] KVM: arm64: config: Use functions from spe.c to test FEAT_SPE_{FnE,FDS} Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 19/28] KVM: arm64: VHE: Context switch SPE state Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 20/28] KVM: arm64: Allow guest SPE physical timestamps only if kernel allows it Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 21/28] KVM: arm64: Handle SPE maintenance interrupts Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 22/28] arm64: errata: Disable SPE in KVM Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 23/28] KVM: arm64: Add kvm-arm.ignore_spe_errata kernel parameter Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 24/28] arm64: errata: Don't enable guest buffer if misprogrammed Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 25/28] KVM: arm64: at: Use callback for reading descriptor Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 26/28] KVM: arm64: Map memory on a SPE stage 2 fault Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 27/28] KVM: arm64: Handle dirty page logging when SPE feature is set Alexandru Elisei
2026-09-03 16:06 ` [RFC PATCH v7 28/28] KVM: arm64: Allow the creation of a SPE enabled VM Alexandru Elisei
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