From:   Suzuki K Poulose <suzuki.poulose@arm.com>
To:     kvm@vger.kernel.org, kvmarm@lists.linux.dev
Cc:     suzuki.poulose@arm.com,
        Alexandru Elisei <alexandru.elisei@arm.com>,
        Andrew Jones <andrew.jones@linux.dev>,
        Christoffer Dall <christoffer.dall@arm.com>,
        Fuad Tabba <tabba@google.com>,
        Jean-Philippe Brucker <jean-philippe@linaro.org>,
        Joey Gouly <Joey.Gouly@arm.com>, Marc Zyngier <maz@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Oliver Upton <oliver.upton@linux.dev>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Quentin Perret <qperret@google.com>,
        Steven Price <steven.price@arm.com>,
        Thomas Huth <thuth@redhat.com>, Will Deacon <will@kernel.org>,
        Zenghui Yu <yuzenghui@huawei.com>, linux-coco@lists.linux.dev,
        kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org
Subject: [RFC kvmtool 23/31] arm64: Specify SMC as the PSCI conduits for realms
Date:   Fri, 27 Jan 2023 11:39:24 +0000
Message-Id: <20230127113932.166089-24-suzuki.poulose@arm.com>
In-Reply-To: <20230127113932.166089-1-suzuki.poulose@arm.com>
References: <20230127112248.136810-1-suzuki.poulose@arm.com>
 <20230127113932.166089-1-suzuki.poulose@arm.com>
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From: Christoffer Dall <christoffer.dall@arm.com>

This lets the VM use the RMM implementation for PSCI.

Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
 arm/fdt.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/arm/fdt.c b/arm/fdt.c
index 762a604d..c46ff410 100644
--- a/arm/fdt.c
+++ b/arm/fdt.c
@@ -208,7 +208,14 @@ static int setup_fdt(struct kvm *kvm)
 		_FDT(fdt_property_string(fdt, "compatible", "arm,psci"));
 		fns = &psci_0_1_fns;
 	}
-	_FDT(fdt_property_string(fdt, "method", "hvc"));
+
+
+	if (kvm->cfg.arch.is_realm) {
+		_FDT(fdt_property_string(fdt, "method", "smc"));
+	} else {
+		_FDT(fdt_property_string(fdt, "method", "hvc"));
+	}
+
 	_FDT(fdt_property_cell(fdt, "cpu_suspend", fns->cpu_suspend));
 	_FDT(fdt_property_cell(fdt, "cpu_off", fns->cpu_off));
 	_FDT(fdt_property_cell(fdt, "cpu_on", fns->cpu_on));
-- 
2.34.1