On Mon, Jan 05, 2026 at 10:32:32PM +0800, fangyu.yu@linux.alibaba.com wrote:
...
quoted hunk ↗ jump to hunk
+ case KVM_CAP_RISCV_SET_HGATP_MODE:
+#ifdef CONFIG_64BIT
+ if (cap->args[0] < HGATP_MODE_SV39X4 ||
+ cap->args[0] > kvm_riscv_gstage_max_mode)
+ return -EINVAL;
+ if (kvm->arch.gstage_mode_initialized)
+ return 0;
+ kvm->arch.gstage_mode_initialized = true;
+ kvm->arch.kvm_riscv_gstage_mode = cap->args[0];
+ kvm->arch.kvm_riscv_gstage_pgd_levels = 3 +
+ kvm->arch.kvm_riscv_gstage_mode - HGATP_MODE_SV39X4;
+ kvm_info("using SV%lluX4 G-stage page table format\n",
+ 39 + (cap->args[0] - HGATP_MODE_SV39X4) * 9);
I don't think we want this kvm_info line, particularly if it doesn't also
include a VM ID in some form to allow readers to know which VM is using
the selected format. Let's either drop it or change it to kvm_debug and
include a VM ID.
Thanks,
drew
quoted hunk ↗ jump to hunk
+#endif
+ return 0;
default:
return -EINVAL;
}
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index dddb781b0507..00c02a880518 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -974,6 +974,7 @@ struct kvm_enable_cap {
#define KVM_CAP_GUEST_MEMFD_FLAGS 244
#define KVM_CAP_ARM_SEA_TO_USER 245
#define KVM_CAP_S390_USER_OPEREXEC 246
+#define KVM_CAP_RISCV_SET_HGATP_MODE 247
struct kvm_irq_routing_irqchip {
__u32 irqchip;--
2.50.1
--
kvm-riscv mailing list
kvm-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kvm-riscv