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

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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 <anup.patel@wdc.com>
Reviewed-and-tested-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
Anup Patel
2021-10-05 18:09:56 +05:30
committed by Anup Patel
parent 788490e798
commit 3e06cdf105
6 changed files with 616 additions and 0 deletions
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10
tools/testing/selftests/kvm/include/kvm_util.h
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@@ -69,6 +69,16 @@ enum vm_guest_mode {
#define MIN_PAGE_SHIFT 12U
#define ptes_per_page(page_size) ((page_size) / 16)
#elif defined(__riscv)
#if __riscv_xlen == 32
#error "RISC-V 32-bit kvm selftests not supported"
#endif
#define VM_MODE_DEFAULT VM_MODE_P40V48_4K
#define MIN_PAGE_SHIFT 12U
#define ptes_per_page(page_size) ((page_size) / 8)
#endif
#define MIN_PAGE_SIZE (1U << MIN_PAGE_SHIFT)