diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/include/asm/csr.h | 1 | ||||
| -rw-r--r-- | arch/riscv/kvm/main.c | 3 | ||||
| -rw-r--r-- | arch/riscv/kvm/mmu.c | 11 |
3 files changed, 14 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h index e935f27b10fd..cc40521e438b 100644 --- a/arch/riscv/include/asm/csr.h +++ b/arch/riscv/include/asm/csr.h @@ -117,6 +117,7 @@ #define HGATP_MODE_SV32X4 _AC(1, UL) #define HGATP_MODE_SV39X4 _AC(8, UL) #define HGATP_MODE_SV48X4 _AC(9, UL) +#define HGATP_MODE_SV57X4 _AC(10, UL) #define HGATP32_MODE_SHIFT 31 #define HGATP32_VMID_SHIFT 22 diff --git a/arch/riscv/kvm/main.c b/arch/riscv/kvm/main.c index c374dad82eee..1549205fe5fe 100644 --- a/arch/riscv/kvm/main.c +++ b/arch/riscv/kvm/main.c @@ -105,6 +105,9 @@ int kvm_arch_init(void *opaque) case HGATP_MODE_SV48X4: str = "Sv48x4"; break; + case HGATP_MODE_SV57X4: + str = "Sv57x4"; + break; default: return -ENODEV; } diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index dc0520792e31..8823eb32dcde 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -751,14 +751,23 @@ void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu) void kvm_riscv_gstage_mode_detect(void) { #ifdef CONFIG_64BIT + /* Try Sv57x4 G-stage mode */ + csr_write(CSR_HGATP, HGATP_MODE_SV57X4 << HGATP_MODE_SHIFT); + if ((csr_read(CSR_HGATP) >> HGATP_MODE_SHIFT) == HGATP_MODE_SV57X4) { + gstage_mode = (HGATP_MODE_SV57X4 << HGATP_MODE_SHIFT); + gstage_pgd_levels = 5; + goto skip_sv48x4_test; + } + /* Try Sv48x4 G-stage mode */ csr_write(CSR_HGATP, HGATP_MODE_SV48X4 << HGATP_MODE_SHIFT); if ((csr_read(CSR_HGATP) >> HGATP_MODE_SHIFT) == HGATP_MODE_SV48X4) { gstage_mode = (HGATP_MODE_SV48X4 << HGATP_MODE_SHIFT); gstage_pgd_levels = 4; } - csr_write(CSR_HGATP, 0); +skip_sv48x4_test: + csr_write(CSR_HGATP, 0); __kvm_riscv_hfence_gvma_all(); #endif } |