From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
kvm@vger.kernel.org
Cc: James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Zenghui Yu <yuzenghui@huawei.com>, Fuad Tabba <tabba@google.com>,
Joey Gouly <joey.gouly@arm.com>, Mark Brown <broonie@kernel.org>
Subject: [PATCH v4 2/8] KVM: arm64: Add predicate for FPMR support in a VM
Date: Tue, 20 Aug 2024 14:17:56 +0100 [thread overview]
Message-ID: <20240820131802.3547589-3-maz@kernel.org> (raw)
In-Reply-To: <20240820131802.3547589-1-maz@kernel.org>
As we are about to check for the advertisement of FPMR support to
a guest in a number of places, add a predicate that will gate most
of the support code for FPMR.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/include/asm/kvm_host.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index e244e3176b56..e5cf8af54dd6 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1475,4 +1475,8 @@ void kvm_set_vm_id_reg(struct kvm *kvm, u32 reg, u64 val);
(pa + pi + pa3) == 1; \
})
+#define kvm_has_fpmr(k) \
+ (system_supports_fpmr() && \
+ kvm_has_feat((k), ID_AA64PFR2_EL1, FPMR, IMP))
+
#endif /* __ARM64_KVM_HOST_H__ */
--
2.39.2
next prev parent reply other threads:[~2024-08-20 13:19 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-20 13:17 [PATCH v4 0/8] KVM: arm64: Add support for FP8 Marc Zyngier
2024-08-20 13:17 ` [PATCH v4 1/8] KVM: arm64: Move SVCR into the sysreg array Marc Zyngier
2024-08-20 13:17 ` Marc Zyngier [this message]
2024-08-20 13:17 ` [PATCH v4 3/8] KVM: arm64: Move FPMR " Marc Zyngier
2024-08-20 13:17 ` [PATCH v4 4/8] KVM: arm64: Add save/restore support for FPMR Marc Zyngier
2024-08-20 13:17 ` [PATCH v4 5/8] KVM: arm64: Honor trap routing " Marc Zyngier
2024-08-20 13:18 ` [PATCH v4 6/8] KVM: arm64: Expose ID_AA64FPFR0_EL1 as a writable ID reg Marc Zyngier
2024-08-20 13:18 ` [PATCH v4 7/8] KVM: arm64: Enable FP8 support when available and configured Marc Zyngier
2024-08-20 13:18 ` [PATCH v4 8/8] KVM: arm64: Expose ID_AA64PFR2_EL1 to userspace and guests Marc Zyngier
2024-08-21 14:34 ` [PATCH v4 0/8] KVM: arm64: Add support for FP8 Mark Brown
2024-08-27 7:07 ` Marc Zyngier
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