[v4,0/1] RISC-V KVM ONE_REG interface for SBI

Message

Anup Patel March 31, 2023, 5:45 p.m. UTC

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_v4 branch at:
https://github.com/avpatel/linux.git

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(-)