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| author |   Anup Patel <apatel@ventanamicro.com> | 2022-04-09 10:02:36 +0530 |
|---|---|---|
| committer |   Anup Patel <anup@brainfault.org> | 2022-05-20 09:08:56 +0530 |
| commit | ac6c85e962d4c009c499d93657f25f46fd8212b9 (patch) | |
| tree | 3c0304dac9f34accef6220fa4e3a2e8d0b815dee /tools/testing/selftests/kvm/include/riscv/processor.h | |
| parent | Linux 5.18-rc7 (diff) | |
| download | linux-dev-ac6c85e962d4c009c499d93657f25f46fd8212b9.tar.xz linux-dev-ac6c85e962d4c009c499d93657f25f46fd8212b9.zip | |
KVM: selftests: riscv: Improve unexpected guest trap handling
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 <apatel@ventanamicro.com>
Tested-by: Mayuresh Chitale <mchitale@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'tools/testing/selftests/kvm/include/riscv/processor.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/riscv/processor.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h index eca5c622efd2..4fcfd1c0389d 100644 --- a/tools/testing/selftests/kvm/include/riscv/processor.h +++ b/tools/testing/selftests/kvm/include/riscv/processor.h @@ -119,10 +119,12 @@ static inline void set_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t id, #define SATP_ASID_SHIFT 44 #define SATP_ASID_MASK _AC(0xFFFF, UL) -#define SBI_EXT_EXPERIMENTAL_START 0x08000000 -#define SBI_EXT_EXPERIMENTAL_END 0x08FFFFFF +#define SBI_EXT_EXPERIMENTAL_START 0x08000000 +#define SBI_EXT_EXPERIMENTAL_END 0x08FFFFFF -#define KVM_RISCV_SELFTESTS_SBI_EXT SBI_EXT_EXPERIMENTAL_END +#define KVM_RISCV_SELFTESTS_SBI_EXT SBI_EXT_EXPERIMENTAL_END +#define KVM_RISCV_SELFTESTS_SBI_UCALL 0 +#define KVM_RISCV_SELFTESTS_SBI_UNEXP 1 struct sbiret { long error; |