Commit a2483d5d authored by BillXiang's avatar BillXiang Committed by Anup Patel
Browse files

RISC-V: KVM: Introduce KVM_EXIT_FAIL_ENTRY_NO_VSFILE 



Currently, we return CSR_HSTATUS as hardware_entry_failure_reason when
kvm_riscv_aia_alloc_hgei failed in KVM_DEV_RISCV_AIA_MODE_HWACCEL
mode, which is vague so it is better to return a well defined value
KVM_EXIT_FAIL_ENTRY_NO_VSFILE provided via uapi/asm/kvm.h.

Signed-off-by: default avatarBillXiang <xiangwencheng@lanxincomputing.com>
Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20250923053851.32863-1-xiangwencheng@lanxincomputing.com


Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent d1c56207

arch/riscv/include/uapi/asm/kvm.h

+2 −0
Original line number Diff line number Diff line
@@ -23,6 +23,8 @@ 
#define KVM_INTERRUPT_SET	-1U

#define KVM_INTERRUPT_UNSET	-2U



#define KVM_EXIT_FAIL_ENTRY_NO_VSFILE	(1ULL << 0)



/* for KVM_GET_REGS and KVM_SET_REGS */

struct kvm_regs {

};

arch/riscv/kvm/aia_imsic.c

+1 −1
Original line number Diff line number Diff line
@@ -814,7 +814,7 @@ int kvm_riscv_vcpu_aia_imsic_update(struct kvm_vcpu *vcpu) 
		/* For HW acceleration mode, we can't continue */

		if (kvm->arch.aia.mode == KVM_DEV_RISCV_AIA_MODE_HWACCEL) {

			run->fail_entry.hardware_entry_failure_reason =

								CSR_HSTATUS;

								KVM_EXIT_FAIL_ENTRY_NO_VSFILE;

			run->fail_entry.cpu = vcpu->cpu;

			run->exit_reason = KVM_EXIT_FAIL_ENTRY;

			return 0;