diff options
| author | Bibo Mao <maobibo@loongson.cn> | 2025-09-23 23:37:08 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@kernel.org> | 2025-09-23 23:37:08 +0800 |
| commit | 44598fe77663da1fdd59c2b01fc317afcb7bc753 (patch) | |
| tree | 3da08cc478665e023e16eac3268351371ef34a98 /arch/loongarch/kvm/exit.c | |
| parent | 80edf90831a2c129db478b1e72b27839602b72ea (diff) | |
LoongArch: KVM: Add sign extension with kernel IOCSR read emulation
Function kvm_complete_iocsr_read() is to add sign extension with IOCSR
read emulation, it is used in user space IOCSR read completion now. Also
it should be used in kernel IOCSR read emulation.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kvm/exit.c')
| -rw-r--r-- | arch/loongarch/kvm/exit.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/loongarch/kvm/exit.c b/arch/loongarch/kvm/exit.c index 45833fbe16bf..cb493980d874 100644 --- a/arch/loongarch/kvm/exit.c +++ b/arch/loongarch/kvm/exit.c @@ -218,16 +218,16 @@ int kvm_emu_iocsr(larch_inst inst, struct kvm_run *run, struct kvm_vcpu *vcpu) } trace_kvm_iocsr(KVM_TRACE_IOCSR_WRITE, run->iocsr_io.len, addr, val); } else { + vcpu->arch.io_gpr = rd; /* Set register id for iocsr read completion */ idx = srcu_read_lock(&vcpu->kvm->srcu); - ret = kvm_io_bus_read(vcpu, KVM_IOCSR_BUS, addr, run->iocsr_io.len, val); + ret = kvm_io_bus_read(vcpu, KVM_IOCSR_BUS, addr, + run->iocsr_io.len, run->iocsr_io.data); srcu_read_unlock(&vcpu->kvm->srcu, idx); - if (ret == 0) + if (ret == 0) { + kvm_complete_iocsr_read(vcpu, run); ret = EMULATE_DONE; - else { + } else ret = EMULATE_DO_IOCSR; - /* Save register id for iocsr read completion */ - vcpu->arch.io_gpr = rd; - } trace_kvm_iocsr(KVM_TRACE_IOCSR_READ, run->iocsr_io.len, addr, NULL); } |