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| author | David Daney <david.daney@cavium.com> | 2013-05-13 22:56:44 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-05-16 20:35:42 +0200 |
| commit | 48c4ac976ae995f263cde8f09578de86bc8e9f1d (patch) | |
| tree | 48e9b3753b951ea2c276546679264c3030a8ea7d /arch/mips/kvm/kvm_tlb.c | |
| parent | Revert "MIPS: microMIPS: Support dynamic ASID sizing." (diff) | |
| download | linux-48c4ac976ae995f263cde8f09578de86bc8e9f1d.tar.xz linux-48c4ac976ae995f263cde8f09578de86bc8e9f1d.zip | |
Revert "MIPS: Allow ASID size to be determined at boot time."
This reverts commit d532f3d26716a39dfd4b88d687bd344fbe77e390.
The original commit has several problems:
1) Doesn't work with 64-bit kernels.
2) Calls TLBMISS_HANDLER_SETUP() before the code is generated.
3) Calls TLBMISS_HANDLER_SETUP() twice in per_cpu_trap_init() when
only one call is needed.
[ralf@linux-mips.org: Also revert the bits of the ASID patch which were
hidden in the KVM merge.]
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: "Steven J. Hill" <Steven.Hill@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5242/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kvm/kvm_tlb.c')
| -rw-r--r-- | arch/mips/kvm/kvm_tlb.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/mips/kvm/kvm_tlb.c b/arch/mips/kvm/kvm_tlb.c index 89511a9258d3..e3f0d9b8b6c5 100644 --- a/arch/mips/kvm/kvm_tlb.c +++ b/arch/mips/kvm/kvm_tlb.c @@ -51,13 +51,13 @@ EXPORT_SYMBOL(kvm_mips_is_error_pfn); uint32_t kvm_mips_get_kernel_asid(struct kvm_vcpu *vcpu) { - return ASID_MASK(vcpu->arch.guest_kernel_asid[smp_processor_id()]); + return vcpu->arch.guest_kernel_asid[smp_processor_id()] & ASID_MASK; } uint32_t kvm_mips_get_user_asid(struct kvm_vcpu *vcpu) { - return ASID_MASK(vcpu->arch.guest_user_asid[smp_processor_id()]); + return vcpu->arch.guest_user_asid[smp_processor_id()] & ASID_MASK; } inline uint32_t kvm_mips_get_commpage_asid (struct kvm_vcpu *vcpu) @@ -84,7 +84,7 @@ void kvm_mips_dump_host_tlbs(void) old_pagemask = read_c0_pagemask(); printk("HOST TLBs:\n"); - printk("ASID: %#lx\n", ASID_MASK(read_c0_entryhi())); + printk("ASID: %#lx\n", read_c0_entryhi() & ASID_MASK); for (i = 0; i < current_cpu_data.tlbsize; i++) { write_c0_index(i); @@ -428,7 +428,7 @@ int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long entryhi) for (i = 0; i < KVM_MIPS_GUEST_TLB_SIZE; i++) { if (((TLB_VPN2(tlb[i]) & ~tlb[i].tlb_mask) == ((entryhi & VPN2_MASK) & ~tlb[i].tlb_mask)) && - (TLB_IS_GLOBAL(tlb[i]) || (TLB_ASID(tlb[i]) == ASID_MASK(entryhi)))) { + (TLB_IS_GLOBAL(tlb[i]) || (TLB_ASID(tlb[i]) == (entryhi & ASID_MASK)))) { index = i; break; } @@ -626,7 +626,7 @@ kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu, { unsigned long asid = asid_cache(cpu); - if (!(ASID_MASK(ASID_INC(asid)))) { + if (!((asid += ASID_INC) & ASID_MASK)) { if (cpu_has_vtag_icache) { flush_icache_all(); } @@ -804,7 +804,8 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) if (!newasid) { /* If we preempted while the guest was executing, then reload the pre-empted ASID */ if (current->flags & PF_VCPU) { - write_c0_entryhi(ASID_MASK(vcpu->arch.preempt_entryhi)); + write_c0_entryhi(vcpu->arch. + preempt_entryhi & ASID_MASK); ehb(); } } else { @@ -816,11 +817,13 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) */ if (current->flags & PF_VCPU) { if (KVM_GUEST_KERNEL_MODE(vcpu)) - write_c0_entryhi(ASID_MASK(vcpu->arch. - guest_kernel_asid[cpu])); + write_c0_entryhi(vcpu->arch. + guest_kernel_asid[cpu] & + ASID_MASK); else - write_c0_entryhi(ASID_MASK(vcpu->arch. - guest_user_asid[cpu])); + write_c0_entryhi(vcpu->arch. + guest_user_asid[cpu] & + ASID_MASK); ehb(); } } @@ -879,7 +882,8 @@ uint32_t kvm_get_inst(uint32_t *opc, struct kvm_vcpu *vcpu) kvm_mips_guest_tlb_lookup(vcpu, ((unsigned long) opc & VPN2_MASK) | - ASID_MASK(kvm_read_c0_guest_entryhi(cop0))); + (kvm_read_c0_guest_entryhi + (cop0) & ASID_MASK)); if (index < 0) { kvm_err ("%s: get_user_failed for %p, vcpu: %p, ASID: %#lx\n", |