This patch adds RISC-V specific cause for ioctl run failure.
For now, it will be used for the below two cases:
1. Insufficient IMSIC files if VM is configured to run in HWACCEL mode
2. TSM is unable to run run_vcpu SBI call for TVMs
KVM also uses a custom scause bit(48) to distinguish this case
from regular vcpu exit causes.
Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx>
---
arch/riscv/include/asm/csr.h | 2 ++
arch/riscv/include/uapi/asm/kvm.h | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index 3176355..e78503a 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -96,6 +96,8 @@
#define EXC_VIRTUAL_INST_FAULT 22
#define EXC_STORE_GUEST_PAGE_FAULT 23
+#define EXC_CUSTOM_KVM_COVE_RUN_FAIL 48
+
/* PMP configuration */
#define PMP_R 0x01
#define PMP_W 0x02
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
index b41d0e7..11440df 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -245,6 +245,10 @@ enum KVM_RISCV_SBI_EXT_ID {
/* One single KVM irqchip, ie. the AIA */
#define KVM_NR_IRQCHIPS 1
+/* run->fail_entry.hardware_entry_failure_reason codes. */
+#define KVM_EXIT_FAIL_ENTRY_IMSIC_FILE_UNAVAILABLE (1ULL << 0)
+#define KVM_EXIT_FAIL_ENTRY_COVE_RUN_VCPU (1ULL << 1)
+
#endif
#endif /* __LINUX_KVM_RISCV_H */
--
2.25.1
