linux-kernel - [RFC kvmtool 07/10] riscv: Define riscv specific vm

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Message-Id: <20230419222350.3604274-8-atishp@rivosinc.com>
Date:   Wed, 19 Apr 2023 15:23:47 -0700
From:   Atish Patra <atishp@...osinc.com>
To:     linux-kernel@...r.kernel.org
Cc:     Atish Patra <atishp@...osinc.com>, Alexandre Ghiti <alex@...ti.fr>,
        Andrew Jones <ajones@...tanamicro.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...shpatra.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Sean Christopherson <seanjc@...gle.com>,
        linux-coco@...ts.linux.dev, Dylan Reid <dylan@...osinc.com>,
        abrestic@...osinc.com, Samuel Ortiz <sameo@...osinc.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        kvm-riscv@...ts.infradead.org, kvm@...r.kernel.org,
        linux-mm@...ck.org, linux-riscv@...ts.infradead.org,
        Palmer Dabbelt <palmer@...belt.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Rajnesh Kanwal <rkanwal@...osinc.com>,
        Uladzislau Rezki <urezki@...il.com>
Subject: [RFC kvmtool 07/10] riscv: Define riscv specific vm_type function

RISC-V supports CoVE VMs now. It needs to setup correct VM type if the
user requests it.

Signed-off-by: Atish Patra <atishp@...osinc.com>
---
 riscv/kvm.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/riscv/kvm.c b/riscv/kvm.c
index 5f9b0d5..e728790 100644
--- a/riscv/kvm.c
+++ b/riscv/kvm.c
@@ -39,6 +39,18 @@ u64 kvm__arch_default_ram_address(void)
 	return RISCV_RAM;
 }
 
+int kvm__get_vm_type(struct kvm *kvm)
+{
+	if (kvm->cfg.arch.cove_vm) {
+		if (__riscv_xlen == 64)
+			return KVM_VM_TYPE_RISCV_COVE;
+		else
+			die("CoVE VM is not supported in RV32\n");
+	} else {
+		return KVM_VM_TYPE;
+	}
+}
+
 void kvm__arch_validate_cfg(struct kvm *kvm)
 {
 }
-- 
2.25.1