[PATCH v5 0/1] RISC-V KVM ONE_REG interface for SBI

From: Anup Patel
Date: Mon Apr 03 2023 - 08:15:42 EST


This series first does few cleanups/fixes (PATCH1 to PATCH5) and adds
ONE-REG interface for customizing the SBI interface visible to the
Guest/VM.

The testing of this series has been done with KVMTOOL changes in
riscv_sbi_imp_v1 branch at:
https://github.com/avpatel/kvmtool.git

These patches can also be found in the riscv_kvm_sbi_imp_v5 branch at:
https://github.com/avpatel/linux.git

Changes since v4:
- Rebased on Linux-6.3-rc5
- Removed redundant semi-colons after switch cases

Changes since v3:
- Added missing switch case for KVM_REG_RISCV_SBI_EXT in
kvm_riscv_vcpu_get_reg().
- Return a bit mask of disabled extensions for
GET(KVM_REG_RISCV_SBI_MULTI_DIS).

Changes since v2:
- Improve ONE_REG interface to allow enabling/disabling multiple SBI
extensions in one ioctl().

Changes since v1:
- Dropped patches 1 to 8 since these are already merged.
- Rebased on Linux-6.3-rc4

Anup Patel (1):
RISC-V: KVM: Add ONE_REG interface to enable/disable SBI extensions

arch/riscv/include/asm/kvm_vcpu_sbi.h | 8 +-
arch/riscv/include/uapi/asm/kvm.h | 32 ++++
arch/riscv/kvm/vcpu.c | 4 +
arch/riscv/kvm/vcpu_sbi.c | 247 ++++++++++++++++++++++++--
arch/riscv/kvm/vcpu_sbi_base.c | 2 +-
5 files changed, 274 insertions(+), 19 deletions(-)

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2.34.1