On Tue, Mar 3, 2026 at 6:39 AM Jiakai Xu <[email protected]> wrote: > > This series fixes a missing validation in the RISC-V KVM SBI > steal-time accounting (STA) register handling. > > Patch 1 validates the configured SBI STA shared memory GPA at > KVM_SET_ONE_REG, enforcing the 64-byte alignment requirement > defined by the SBI specification or allowing INVALID_GPA to explicitly > disable steal-time accounting. This prevents invalid userspace state > from reaching runtime code paths and avoids WARN_ON() triggers during > KVM_RUN. > > Patch 2 refactors existing UAPI tests from steal_time_init() into > a dedicated check_steal_time_uapi() function for better code organization, > and adds an empty stub for RISC-V. > > Patch 3 fills in the RISC-V stub with tests that verify KVM correctly > enforces the STA alignment requirements. > > Jiakai Xu (3): > RISC-V: KVM: Validate SBI STA shmem alignment in > kvm_sbi_ext_sta_set_reg() > KVM: selftests: Refactor UAPI tests into dedicated function > RISC-V: KVM: selftests: Add RISC-V SBI STA shmem alignment tests > > arch/riscv/kvm/vcpu_sbi_sta.c | 16 ++- > .../selftests/kvm/include/kvm_util_types.h | 2 + > tools/testing/selftests/kvm/steal_time.c | 98 ++++++++++++++++--- > 3 files changed, 95 insertions(+), 21 deletions(-) > > -- > 2.34.1 >
Queued this series for Linux-7.1 Thanks, Anup
