diff options
Diffstat (limited to 'arch/mips/kvm/tlb.c')
| -rw-r--r-- | arch/mips/kvm/tlb.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c index fc8aee05d10b..1c1fbce3f566 100644 --- a/arch/mips/kvm/tlb.c +++ b/arch/mips/kvm/tlb.c @@ -20,6 +20,7 @@ #include <asm/cpu.h> #include <asm/bootinfo.h> +#include <asm/mipsregs.h> #include <asm/mmu_context.h> #include <asm/cacheflush.h> #include <asm/tlb.h> @@ -621,6 +622,46 @@ void kvm_vz_load_guesttlb(const struct kvm_mips_tlb *buf, unsigned int index, } EXPORT_SYMBOL_GPL(kvm_vz_load_guesttlb); +#ifdef CONFIG_CPU_LOONGSON64 +void kvm_loongson_clear_guest_vtlb(void) +{ + int idx = read_gc0_index(); + + /* Set root GuestID for root probe and write of guest TLB entry */ + set_root_gid_to_guest_gid(); + + write_gc0_index(0); + guest_tlbinvf(); + write_gc0_index(idx); + + clear_root_gid(); + set_c0_diag(LOONGSON_DIAG_ITLB | LOONGSON_DIAG_DTLB); +} +EXPORT_SYMBOL_GPL(kvm_loongson_clear_guest_vtlb); + +void kvm_loongson_clear_guest_ftlb(void) +{ + int i; + int idx = read_gc0_index(); + + /* Set root GuestID for root probe and write of guest TLB entry */ + set_root_gid_to_guest_gid(); + + for (i = current_cpu_data.tlbsizevtlb; + i < (current_cpu_data.tlbsizevtlb + + current_cpu_data.tlbsizeftlbsets); + i++) { + write_gc0_index(i); + guest_tlbinvf(); + } + write_gc0_index(idx); + + clear_root_gid(); + set_c0_diag(LOONGSON_DIAG_ITLB | LOONGSON_DIAG_DTLB); +} +EXPORT_SYMBOL_GPL(kvm_loongson_clear_guest_ftlb); +#endif + #endif /** |