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Message-ID: <20260120080013.2153519-22-anup.patel@oss.qualcomm.com>
Date: Tue, 20 Jan 2026 13:30:07 +0530
From: Anup Patel <anup.patel@....qualcomm.com>
To: Paolo Bonzini <pbonzini@...hat.com>, Atish Patra <atish.patra@...ux.dev>
Cc: Palmer Dabbelt <palmer@...belt.com>, Paul Walmsley <pjw@...nel.org>,
Alexandre Ghiti <alex@...ti.fr>, Shuah Khan <shuah@...nel.org>,
Anup Patel <anup@...infault.org>,
Andrew Jones <andrew.jones@....qualcomm.com>,
kvm-riscv@...ts.infradead.org, kvm@...r.kernel.org,
linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org,
Anup Patel <anup.patel@....qualcomm.com>
Subject: [PATCH 21/27] RISC-V: KVM: Implement remote HFENCE SBI calls for guest
The remote HFENCE SBI calls can now be implemented as operations
on the nested g-stage page table emulated for the guest.
Signed-off-by: Anup Patel <anup.patel@....qualcomm.com>
---
arch/riscv/include/asm/kvm_host.h | 2 +
arch/riscv/include/asm/kvm_tlb.h | 37 ++++++-
arch/riscv/include/asm/kvm_vcpu_nested.h | 14 +++
arch/riscv/kvm/tlb.c | 124 +++++++++++++++++++++++
arch/riscv/kvm/vcpu_nested_swtlb.c | 76 ++++++++++++++
arch/riscv/kvm/vcpu_sbi_replace.c | 63 +++++++++++-
6 files changed, 310 insertions(+), 6 deletions(-)
diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index c510564a09a2..2f097459ee14 100644
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -47,6 +47,8 @@
KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(6)
#define KVM_REQ_NESTED_SWTLB KVM_ARCH_REQ(7)
+#define KVM_REQ_NESTED_HFENCE_GVMA_ALL KVM_ARCH_REQ(8)
+#define KVM_REQ_NESTED_HFENCE_VVMA_ALL KVM_ARCH_REQ(9)
#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE
diff --git a/arch/riscv/include/asm/kvm_tlb.h b/arch/riscv/include/asm/kvm_tlb.h
index a0e7099bcb85..591b8735000f 100644
--- a/arch/riscv/include/asm/kvm_tlb.h
+++ b/arch/riscv/include/asm/kvm_tlb.h
@@ -15,7 +15,11 @@ enum kvm_riscv_hfence_type {
KVM_RISCV_HFENCE_VVMA_ASID_GVA,
KVM_RISCV_HFENCE_VVMA_ASID_ALL,
KVM_RISCV_HFENCE_VVMA_GVA,
- KVM_RISCV_HFENCE_VVMA_ALL
+ KVM_RISCV_HFENCE_VVMA_ALL,
+ KVM_RISCV_NESTED_HFENCE_GVMA_GPA,
+ KVM_RISCV_NESTED_HFENCE_GVMA_VMID_GPA,
+ KVM_RISCV_NESTED_HFENCE_VVMA_GVA,
+ KVM_RISCV_NESTED_HFENCE_VVMA_ASID_GVA,
};
struct kvm_riscv_hfence {
@@ -56,6 +60,8 @@ void kvm_riscv_tlb_flush_process(struct kvm_vcpu *vcpu);
void kvm_riscv_fence_i_process(struct kvm_vcpu *vcpu);
void kvm_riscv_hfence_vvma_all_process(struct kvm_vcpu *vcpu);
void kvm_riscv_hfence_process(struct kvm_vcpu *vcpu);
+void kvm_riscv_nested_hfence_gvma_all_process(struct kvm_vcpu *vcpu);
+void kvm_riscv_nested_hfence_vvma_all_process(struct kvm_vcpu *vcpu);
void kvm_riscv_fence_i(struct kvm *kvm,
unsigned long hbase, unsigned long hmask);
@@ -82,4 +88,33 @@ void kvm_riscv_hfence_vvma_all(struct kvm *kvm,
unsigned long hbase, unsigned long hmask,
unsigned long vmid);
+void kvm_riscv_nested_hfence_gvma_gpa(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ gpa_t gpa, gpa_t gpsz,
+ unsigned long order);
+void kvm_riscv_nested_hfence_gvma_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask);
+void kvm_riscv_nested_hfence_gvma_vmid_gpa(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ gpa_t gpa, gpa_t gpsz,
+ unsigned long order, unsigned long vmid);
+void kvm_riscv_nested_hfence_gvma_vmid_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long vmid);
+void kvm_riscv_nested_hfence_vvma_gva(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long gva, unsigned long gvsz,
+ unsigned long order, unsigned long vmid);
+void kvm_riscv_nested_hfence_vvma_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long vmid);
+void kvm_riscv_nested_hfence_vvma_asid_gva(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long gva, unsigned long gvsz,
+ unsigned long order, unsigned long asid,
+ unsigned long vmid);
+void kvm_riscv_nested_hfence_vvma_asid_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long asid, unsigned long vmid);
+
#endif
diff --git a/arch/riscv/include/asm/kvm_vcpu_nested.h b/arch/riscv/include/asm/kvm_vcpu_nested.h
index 665c60f09ee6..4935ab0db1a2 100644
--- a/arch/riscv/include/asm/kvm_vcpu_nested.h
+++ b/arch/riscv/include/asm/kvm_vcpu_nested.h
@@ -69,6 +69,20 @@ int kvm_riscv_vcpu_nested_swtlb_xlate(struct kvm_vcpu *vcpu,
const struct kvm_cpu_trap *trap,
struct kvm_gstage_mapping *out_map,
struct kvm_cpu_trap *out_trap);
+void kvm_riscv_vcpu_nested_swtlb_vvma_flush(struct kvm_vcpu *vcpu,
+ unsigned long vaddr, unsigned long size,
+ unsigned long order, unsigned long vmid);
+void kvm_riscv_vcpu_nested_swtlb_vvma_flush_asid(struct kvm_vcpu *vcpu,
+ unsigned long vaddr, unsigned long size,
+ unsigned long order, unsigned long vmid,
+ unsigned long asid);
+void kvm_riscv_vcpu_nested_swtlb_gvma_flush(struct kvm_vcpu *vcpu,
+ gpa_t addr, gpa_t size, unsigned long order);
+void kvm_riscv_vcpu_nested_swtlb_gvma_flush_vmid(struct kvm_vcpu *vcpu,
+ gpa_t addr, gpa_t size, unsigned long order,
+ unsigned long vmid);
+void kvm_riscv_vcpu_nested_swtlb_host_flush(struct kvm_vcpu *vcpu,
+ gpa_t addr, gpa_t size, unsigned long order);
void kvm_riscv_vcpu_nested_swtlb_process(struct kvm_vcpu *vcpu);
void kvm_riscv_vcpu_nested_swtlb_request(struct kvm_vcpu *vcpu,
const struct kvm_gstage_mapping *guest_map,
diff --git a/arch/riscv/kvm/tlb.c b/arch/riscv/kvm/tlb.c
index a95aa5336560..1b48a5ff81d1 100644
--- a/arch/riscv/kvm/tlb.c
+++ b/arch/riscv/kvm/tlb.c
@@ -210,6 +210,7 @@ void kvm_riscv_tlb_flush_process(struct kvm_vcpu *vcpu)
nacl_hfence_gvma_vmid_all(nacl_shmem(), vmid);
else
kvm_riscv_local_hfence_gvma_vmid_all(vmid);
+ kvm_riscv_vcpu_nested_swtlb_host_flush(vcpu, 0, 0, 0);
}
void kvm_riscv_hfence_vvma_all_process(struct kvm_vcpu *vcpu)
@@ -223,6 +224,16 @@ void kvm_riscv_hfence_vvma_all_process(struct kvm_vcpu *vcpu)
kvm_riscv_local_hfence_vvma_all(vmid);
}
+void kvm_riscv_nested_hfence_gvma_all_process(struct kvm_vcpu *vcpu)
+{
+ kvm_riscv_vcpu_nested_swtlb_gvma_flush(vcpu, 0, 0, 0);
+}
+
+void kvm_riscv_nested_hfence_vvma_all_process(struct kvm_vcpu *vcpu)
+{
+ kvm_riscv_vcpu_nested_swtlb_vvma_flush(vcpu, 0, 0, 0, -1UL);
+}
+
static bool vcpu_hfence_dequeue(struct kvm_vcpu *vcpu,
struct kvm_riscv_hfence *out_data)
{
@@ -287,12 +298,14 @@ void kvm_riscv_hfence_process(struct kvm_vcpu *vcpu)
else
kvm_riscv_local_hfence_gvma_vmid_gpa(d.vmid, d.addr,
d.size, d.order);
+ kvm_riscv_vcpu_nested_swtlb_host_flush(vcpu, d.addr, d.size, d.order);
break;
case KVM_RISCV_HFENCE_GVMA_VMID_ALL:
if (kvm_riscv_nacl_available())
nacl_hfence_gvma_vmid_all(nacl_shmem(), d.vmid);
else
kvm_riscv_local_hfence_gvma_vmid_all(d.vmid);
+ kvm_riscv_vcpu_nested_swtlb_host_flush(vcpu, 0, 0, 0);
break;
case KVM_RISCV_HFENCE_VVMA_ASID_GVA:
kvm_riscv_vcpu_pmu_incr_fw(vcpu, SBI_PMU_FW_HFENCE_VVMA_ASID_RCVD);
@@ -464,6 +477,117 @@ void kvm_riscv_hfence_vvma_all(struct kvm *kvm,
KVM_REQ_HFENCE_VVMA_ALL, &data);
}
+void kvm_riscv_nested_hfence_gvma_gpa(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ gpa_t gpa, gpa_t gpsz,
+ unsigned long order)
+{
+ struct kvm_riscv_hfence data = {0};
+
+ data.type = KVM_RISCV_NESTED_HFENCE_GVMA_GPA;
+ data.addr = gpa;
+ data.size = gpsz;
+ data.order = order;
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
+ KVM_REQ_NESTED_HFENCE_GVMA_ALL, &data);
+}
+
+void kvm_riscv_nested_hfence_gvma_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask)
+{
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_NESTED_HFENCE_GVMA_ALL,
+ KVM_REQ_NESTED_HFENCE_GVMA_ALL, NULL);
+}
+
+void kvm_riscv_nested_hfence_gvma_vmid_gpa(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ gpa_t gpa, gpa_t gpsz,
+ unsigned long order, unsigned long vmid)
+{
+ struct kvm_riscv_hfence data;
+
+ data.type = KVM_RISCV_NESTED_HFENCE_GVMA_VMID_GPA;
+ data.asid = 0;
+ data.vmid = vmid;
+ data.addr = gpa;
+ data.size = gpsz;
+ data.order = order;
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
+ KVM_REQ_NESTED_HFENCE_GVMA_ALL, &data);
+}
+
+void kvm_riscv_nested_hfence_gvma_vmid_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long vmid)
+{
+ struct kvm_riscv_hfence data = {0};
+
+ data.type = KVM_RISCV_NESTED_HFENCE_GVMA_VMID_GPA;
+ data.vmid = vmid;
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
+ KVM_REQ_NESTED_HFENCE_GVMA_ALL, &data);
+}
+
+void kvm_riscv_nested_hfence_vvma_gva(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long gva, unsigned long gvsz,
+ unsigned long order, unsigned long vmid)
+{
+ struct kvm_riscv_hfence data;
+
+ data.type = KVM_RISCV_NESTED_HFENCE_VVMA_GVA;
+ data.asid = 0;
+ data.vmid = vmid;
+ data.addr = gva;
+ data.size = gvsz;
+ data.order = order;
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
+ KVM_REQ_NESTED_HFENCE_VVMA_ALL, &data);
+}
+
+void kvm_riscv_nested_hfence_vvma_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long vmid)
+{
+ struct kvm_riscv_hfence data = {0};
+
+ data.type = KVM_RISCV_NESTED_HFENCE_VVMA_GVA;
+ data.vmid = vmid;
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
+ KVM_REQ_NESTED_HFENCE_VVMA_ALL, &data);
+}
+
+void kvm_riscv_nested_hfence_vvma_asid_gva(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long gva, unsigned long gvsz,
+ unsigned long order, unsigned long asid,
+ unsigned long vmid)
+{
+ struct kvm_riscv_hfence data;
+
+ data.type = KVM_RISCV_NESTED_HFENCE_VVMA_ASID_GVA;
+ data.asid = asid;
+ data.vmid = vmid;
+ data.addr = gva;
+ data.size = gvsz;
+ data.order = order;
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
+ KVM_REQ_NESTED_HFENCE_VVMA_ALL, &data);
+}
+
+void kvm_riscv_nested_hfence_vvma_asid_all(struct kvm *kvm,
+ unsigned long hbase, unsigned long hmask,
+ unsigned long asid, unsigned long vmid)
+{
+ struct kvm_riscv_hfence data = {0};
+
+ data.type = KVM_RISCV_NESTED_HFENCE_VVMA_ASID_GVA;
+ data.asid = asid;
+ data.vmid = vmid;
+ make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
+ KVM_REQ_NESTED_HFENCE_VVMA_ALL, &data);
+}
+
int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t gfn, u64 nr_pages)
{
kvm_riscv_hfence_gvma_vmid_gpa(kvm, -1UL, 0,
diff --git a/arch/riscv/kvm/vcpu_nested_swtlb.c b/arch/riscv/kvm/vcpu_nested_swtlb.c
index 1d9faf50a61f..7dabfc1c3e16 100644
--- a/arch/riscv/kvm/vcpu_nested_swtlb.c
+++ b/arch/riscv/kvm/vcpu_nested_swtlb.c
@@ -4,6 +4,7 @@
*/
#include <linux/kvm_host.h>
+#include <asm/kvm_nacl.h>
int kvm_riscv_vcpu_nested_swtlb_xlate(struct kvm_vcpu *vcpu,
const struct kvm_cpu_trap *trap,
@@ -14,6 +15,81 @@ int kvm_riscv_vcpu_nested_swtlb_xlate(struct kvm_vcpu *vcpu,
return 0;
}
+void kvm_riscv_vcpu_nested_swtlb_vvma_flush(struct kvm_vcpu *vcpu,
+ unsigned long vaddr, unsigned long size,
+ unsigned long order, unsigned long vmid)
+{
+ struct kvm_vcpu_nested *ns = &vcpu->arch.nested;
+ struct kvm_vmid *v = &vcpu->kvm->arch.vmid;
+
+ if (vmid != -1UL && ((ns->csr.hgatp & HGATP_VMID) >> HGATP_VMID_SHIFT) != vmid)
+ return;
+
+ vmid = kvm_riscv_gstage_nested_vmid(READ_ONCE(v->vmid));
+ if (!vaddr && !size && !order) {
+ if (kvm_riscv_nacl_available())
+ nacl_hfence_vvma_all(nacl_shmem(), vmid);
+ else
+ kvm_riscv_local_hfence_vvma_all(vmid);
+ } else {
+ if (kvm_riscv_nacl_available())
+ nacl_hfence_vvma(nacl_shmem(), vmid, vaddr, size, order);
+ else
+ kvm_riscv_local_hfence_vvma_gva(vmid, vaddr, size, order);
+ }
+}
+
+void kvm_riscv_vcpu_nested_swtlb_vvma_flush_asid(struct kvm_vcpu *vcpu,
+ unsigned long vaddr, unsigned long size,
+ unsigned long order, unsigned long vmid,
+ unsigned long asid)
+{
+ struct kvm_vcpu_nested *ns = &vcpu->arch.nested;
+ struct kvm_vmid *v = &vcpu->kvm->arch.vmid;
+
+ if (vmid != -1UL && ((ns->csr.hgatp & HGATP_VMID) >> HGATP_VMID_SHIFT) != vmid)
+ return;
+
+ vmid = kvm_riscv_gstage_nested_vmid(READ_ONCE(v->vmid));
+ if (!vaddr && !size && !order) {
+ if (kvm_riscv_nacl_available())
+ nacl_hfence_vvma_asid_all(nacl_shmem(), vmid, asid);
+ else
+ kvm_riscv_local_hfence_vvma_asid_all(vmid, asid);
+ } else {
+ if (kvm_riscv_nacl_available())
+ nacl_hfence_vvma_asid(nacl_shmem(), vmid, asid,
+ vaddr, size, order);
+ else
+ kvm_riscv_local_hfence_vvma_asid_gva(vmid, asid, vaddr,
+ size, order);
+ }
+}
+
+void kvm_riscv_vcpu_nested_swtlb_gvma_flush(struct kvm_vcpu *vcpu,
+ gpa_t addr, gpa_t size, unsigned long order)
+{
+ /* TODO: */
+}
+
+void kvm_riscv_vcpu_nested_swtlb_gvma_flush_vmid(struct kvm_vcpu *vcpu,
+ gpa_t addr, gpa_t size, unsigned long order,
+ unsigned long vmid)
+{
+ struct kvm_vcpu_nested *ns = &vcpu->arch.nested;
+
+ if (vmid != -1UL && ((ns->csr.hgatp & HGATP_VMID) >> HGATP_VMID_SHIFT) != vmid)
+ return;
+
+ kvm_riscv_vcpu_nested_swtlb_gvma_flush(vcpu, addr, size, order);
+}
+
+void kvm_riscv_vcpu_nested_swtlb_host_flush(struct kvm_vcpu *vcpu,
+ gpa_t addr, gpa_t size, unsigned long order)
+{
+ /* TODO: */
+}
+
void kvm_riscv_vcpu_nested_swtlb_process(struct kvm_vcpu *vcpu)
{
struct kvm_vcpu_nested_swtlb *nst = &vcpu->arch.nested.swtlb;
diff --git a/arch/riscv/kvm/vcpu_sbi_replace.c b/arch/riscv/kvm/vcpu_sbi_replace.c
index 506a510b6bff..d60c7b05cd02 100644
--- a/arch/riscv/kvm/vcpu_sbi_replace.c
+++ b/arch/riscv/kvm/vcpu_sbi_replace.c
@@ -123,14 +123,67 @@ static int kvm_sbi_ext_rfence_handler(struct kvm_vcpu *vcpu, struct kvm_run *run
kvm_riscv_vcpu_pmu_incr_fw(vcpu, SBI_PMU_FW_HFENCE_VVMA_ASID_SENT);
break;
case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA:
+ /* Not supported if VCPU does not have H-extension */
+ if (!riscv_isa_extension_available(vcpu->arch.isa, h)) {
+ retdata->err_val = SBI_ERR_NOT_SUPPORTED;
+ break;
+ }
+
+ if ((cp->a2 == 0 && cp->a3 == 0) || cp->a3 == -1UL)
+ kvm_riscv_nested_hfence_gvma_all(vcpu->kvm, hbase, hmask);
+ else
+ kvm_riscv_nested_hfence_gvma_gpa(vcpu->kvm, hbase, hmask,
+ cp->a2, cp->a3, PAGE_SHIFT);
+ kvm_riscv_vcpu_pmu_incr_fw(vcpu, SBI_PMU_FW_HFENCE_GVMA_SENT);
+ break;
case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID:
+ /* Not supported if VCPU does not have H-extension */
+ if (!riscv_isa_extension_available(vcpu->arch.isa, h)) {
+ retdata->err_val = SBI_ERR_NOT_SUPPORTED;
+ break;
+ }
+
+ if ((cp->a2 == 0 && cp->a3 == 0) || cp->a3 == -1UL)
+ kvm_riscv_nested_hfence_gvma_vmid_all(vcpu->kvm,
+ hbase, hmask, cp->a4);
+ else
+ kvm_riscv_nested_hfence_gvma_vmid_gpa(vcpu->kvm, hbase, hmask,
+ cp->a2, cp->a3,
+ PAGE_SHIFT, cp->a4);
+ kvm_riscv_vcpu_pmu_incr_fw(vcpu, SBI_PMU_FW_HFENCE_GVMA_VMID_SENT);
+ break;
case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA:
+ /* Not supported if VCPU does not have H-extension */
+ if (!riscv_isa_extension_available(vcpu->arch.isa, h)) {
+ retdata->err_val = SBI_ERR_NOT_SUPPORTED;
+ break;
+ }
+
+ vmid = (vcpu->arch.nested.csr.hgatp & HGATP_VMID) >> HGATP_VMID_SHIFT;
+ if ((cp->a2 == 0 && cp->a3 == 0) || cp->a3 == -1UL)
+ kvm_riscv_nested_hfence_vvma_all(vcpu->kvm, hbase, hmask, vmid);
+ else
+ kvm_riscv_nested_hfence_vvma_gva(vcpu->kvm, hbase, hmask,
+ cp->a2, cp->a3, PAGE_SHIFT, vmid);
+ kvm_riscv_vcpu_pmu_incr_fw(vcpu, SBI_PMU_FW_HFENCE_VVMA_SENT);
+ break;
case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID:
- /*
- * Until nested virtualization is implemented, the
- * SBI HFENCE calls should return not supported
- * hence fallthrough.
- */
+ /* Not supported if VCPU does not have H-extension */
+ if (!riscv_isa_extension_available(vcpu->arch.isa, h)) {
+ retdata->err_val = SBI_ERR_NOT_SUPPORTED;
+ break;
+ }
+
+ vmid = (vcpu->arch.nested.csr.hgatp & HGATP_VMID) >> HGATP_VMID_SHIFT;
+ if ((cp->a2 == 0 && cp->a3 == 0) || cp->a3 == -1UL)
+ kvm_riscv_nested_hfence_vvma_asid_all(vcpu->kvm, hbase, hmask,
+ cp->a4, vmid);
+ else
+ kvm_riscv_nested_hfence_vvma_asid_gva(vcpu->kvm, hbase, hmask,
+ cp->a2, cp->a3, PAGE_SHIFT,
+ cp->a4, vmid);
+ kvm_riscv_vcpu_pmu_incr_fw(vcpu, SBI_PMU_FW_HFENCE_VVMA_ASID_SENT);
+ break;
default:
retdata->err_val = SBI_ERR_NOT_SUPPORTED;
}
--
2.43.0
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