kernel/tools/testing/selftests/kvm/include/riscv/processor.h, branch linux-6.2.y

KVM: selftests: Consolidate KVM_{G,S}ET_ONE_REG helpers

2022-06-11T15:47:10Z

Rework vcpu_{g,s}et_reg() to provide the APIs that tests actually want to use, and drop the three "one-off" implementations that cropped up due to the poor API. Ignore the handful of direct KVM_{G,S}ET_ONE_REG calls that don't fit the APIs for one reason or another. No functional change intended. Signed-off-by: Sean Christopherson Signed-off-by: Paolo Bonzini

KVM: selftests: riscv: Improve unexpected guest trap handling

2022-05-20T03:38:56Z

Currently, we simply hang using "while (1) ;" upon any unexpected guest traps because the default guest trap handler is guest_hang(). The above approach is not useful to anyone because KVM selftests users will only see a hung application upon any unexpected guest trap. This patch improves unexpected guest trap handling for KVM RISC-V selftests by doing the following: 1) Return to host user-space 2) Dump VCPU registers 3) Die using TEST_ASSERT(0, ...) Signed-off-by: Anup Patel Tested-by: Mayuresh Chitale Signed-off-by: Anup Patel

KVM: selftests: riscv: Set PTE A and D bits in VS-stage page table

2022-04-09T03:45:44Z

Supporting hardware updates of PTE A and D bits is optional for any RISC-V implementation so current software strategy is to always set these bits in both G-stage (hypervisor) and VS-stage (guest kernel). If PTE A and D bits are not set by software (hypervisor or guest) then RISC-V implementations not supporting hardware updates of these bits will cause traps even for perfectly valid PTEs. Based on above explanation, the VS-stage page table created by various KVM selftest applications is not correct because PTE A and D bits are not set. This patch fixes VS-stage page table programming of PTE A and D bits for KVM selftests. Fixes: 3e06cdf10520 ("KVM: selftests: Add initial support for RISC-V 64-bit") Signed-off-by: Anup Patel Tested-by: Mayuresh Chitale Signed-off-by: Anup Patel

KVM: selftests: Add initial support for RISC-V 64-bit

2022-01-06T09:47:50Z

We add initial support for RISC-V 64-bit in KVM selftests using which we can cross-compile and run arch independent tests such as: demand_paging_test dirty_log_test kvm_create_max_vcpus, kvm_page_table_test set_memory_region_test kvm_binary_stats_test All VM guest modes defined in kvm_util.h require at least 48-bit guest virtual address so to use KVM RISC-V selftests hardware need to support at least Sv48 MMU for guest (i.e. VS-mode). Signed-off-by: Anup Patel Reviewed-and-tested-by: Atish Patra