[PATCH v3 0/2] RISC-V: KVM: VCPU reset fixes

From: "Radim Krčmář" <rkrcmar@ventanamicro.com>
To: kvm-riscv@lists.infradead.org
Cc: kvm@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kernel@vger.kernel.org, Anup Patel <anup@brainfault.org>,
	Atish Patra <atishp@atishpatra.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>,
	Andrew Jones <ajones@ventanamicro.com>
Subject: [PATCH v3 0/2] RISC-V: KVM: VCPU reset fixes
Date: Thu, 15 May 2025 16:37:24 +0200	[thread overview]
Message-ID: <20250515143723.2450630-4-rkrcmar@ventanamicro.com> (raw)

Hello,

the design still requires a discussion.

[v3 1/2] removes most of the additional changes that the KVM capability
was doing in v2.  [v3 2/2] is new and previews a general solution to the
lack of userspace control over KVM SBI.

A possible QEMU implementation for both capabilities can be seen in
https://github.com/radimkrcmar/qemu/tree/reset_fixes_v3
The next step would be to forward the HSM ecalls to QEMU.

v2: https://lore.kernel.org/kvm-riscv/20250508142842.1496099-2-rkrcmar@ventanamicro.com/
v1: https://lore.kernel.org/kvm-riscv/20250403112522.1566629-3-rkrcmar@ventanamicro.com/

Radim Krčmář (2):
  RISC-V: KVM: add KVM_CAP_RISCV_MP_STATE_RESET
  RISC-V: KVM: add KVM_CAP_RISCV_USERSPACE_SBI

 Documentation/virt/kvm/api.rst        | 22 ++++++++++++++++++++++
 arch/riscv/include/asm/kvm_host.h     |  6 ++++++
 arch/riscv/include/asm/kvm_vcpu_sbi.h |  1 +
 arch/riscv/kvm/vcpu.c                 | 27 ++++++++++++++-------------
 arch/riscv/kvm/vcpu_sbi.c             | 27 +++++++++++++++++++++++++--
 arch/riscv/kvm/vm.c                   | 18 ++++++++++++++++++
 include/uapi/linux/kvm.h              |  2 ++
 7 files changed, 88 insertions(+), 15 deletions(-)

-- 
2.49.0

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