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>
diff --git a/arch/mips/kvm/kvm_tlb.c b/arch/mips/kvm/kvm_tlb.c
index 89511a9..e3f0d9b 100644
--- a/arch/mips/kvm/kvm_tlb.c
+++ b/arch/mips/kvm/kvm_tlb.c
@@ -51,13 +51,13 @@
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 @@
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 @@
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 @@
{
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 @@
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 @@
*/
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 @@
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",