RISC-V: KVM: Support runtime configuration for per-VM's HGATP mode

Introduces one per-VM architecture-specific fields to support runtime configuration of the G-stage page table format: - kvm->arch.pgd_levels: the corresponding number of page table levels for the selected mode. These fields replace the previous global variables kvm_riscv_gstage_mode and kvm_riscv_gstage_pgd_levels, enabling different virtual machines to independently select their G-stage page table format instead of being forced to share the maximum mode detected by the kernel at boot time. Signed-off-by: Fangyu Yu <fangyu.yu@linux.alibaba.com> Reviewed-by: Andrew Jones <andrew.jones@oss.qualcomm.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Guo Ren <guoren@kernel.org> Reviewed-by: Nutty Liu <nutty.liu@hotmail.com> Link: https://lore.kernel.org/r/20260403153019.9916-2-fangyu.yu@linux.alibaba.com Signed-off-by: Anup Patel <anup@brainfault.org>
2026-11-08 18:57:22 +00:00 · 2026-04-03 23:30:16 +08:00 · 2026-04-03 23:30:16 +08:00 · efcac8424b
commit efcac8424b
parent e2494f83f9
7 changed files with 89 additions and 60 deletions
--- a/arch/riscv/include/asm/kvm_gstage.h
+++ b/arch/riscv/include/asm/kvm_gstage.h
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
--- a/arch/riscv/kvm/gstage.c
+++ b/arch/riscv/kvm/gstage.c
--- a/arch/riscv/kvm/main.c
+++ b/arch/riscv/kvm/main.c
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
--- a/arch/riscv/kvm/vm.c
+++ b/arch/riscv/kvm/vm.c
--- a/arch/riscv/kvm/vmid.c
+++ b/arch/riscv/kvm/vmid.c