diff options
Diffstat (limited to 'arch/powerpc/kvm/e500_tlb.c')
| -rw-r--r-- | arch/powerpc/kvm/e500_tlb.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index 7f808c52e64a..c09e642ee537 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -76,7 +76,8 @@ static inline unsigned int tlb0_get_next_victim( static inline unsigned int tlb1_max_shadow_size(void) { - return tlb1_entry_num - tlbcam_index; + /* reserve one entry for magic page */ + return tlb1_entry_num - tlbcam_index - 1; } static inline int tlbe_is_writable(struct tlbe *tlbe) @@ -142,6 +143,25 @@ static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500, } } +void kvmppc_map_magic(struct kvm_vcpu *vcpu) +{ + struct tlbe magic; + ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; + pfn_t pfn; + + pfn = (pfn_t)virt_to_phys((void *)shared_page) >> PAGE_SHIFT; + get_page(pfn_to_page(pfn)); + + magic.mas1 = MAS1_VALID | MAS1_TS | + MAS1_TSIZE(BOOK3E_PAGESZ_4K); + magic.mas2 = vcpu->arch.magic_page_ea | MAS2_M; + magic.mas3 = (pfn << PAGE_SHIFT) | + MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR; + magic.mas7 = pfn >> (32 - PAGE_SHIFT); + + __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index)); +} + void kvmppc_e500_tlb_load(struct kvm_vcpu *vcpu, int cpu) { } |