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Diffstat (limited to 'arch/mips/kvm/tlb.c')
-rw-r--r--arch/mips/kvm/tlb.c174
1 files changed, 0 insertions, 174 deletions
diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c
index 1c1fbce3f566..1088114e5482 100644
--- a/arch/mips/kvm/tlb.c
+++ b/arch/mips/kvm/tlb.c
@@ -30,10 +30,6 @@
#include <asm/r4kcache.h>
#define CONFIG_MIPS_MT
-#define KVM_GUEST_PC_TLB 0
-#define KVM_GUEST_SP_TLB 1
-
-#ifdef CONFIG_KVM_MIPS_VZ
unsigned long GUESTID_MASK;
EXPORT_SYMBOL_GPL(GUESTID_MASK);
unsigned long GUESTID_FIRST_VERSION;
@@ -50,91 +46,6 @@ static u32 kvm_mips_get_root_asid(struct kvm_vcpu *vcpu)
else
return cpu_asid(smp_processor_id(), gpa_mm);
}
-#endif
-
-static u32 kvm_mips_get_kernel_asid(struct kvm_vcpu *vcpu)
-{
- struct mm_struct *kern_mm = &vcpu->arch.guest_kernel_mm;
- int cpu = smp_processor_id();
-
- return cpu_asid(cpu, kern_mm);
-}
-
-static u32 kvm_mips_get_user_asid(struct kvm_vcpu *vcpu)
-{
- struct mm_struct *user_mm = &vcpu->arch.guest_user_mm;
- int cpu = smp_processor_id();
-
- return cpu_asid(cpu, user_mm);
-}
-
-/* Structure defining an tlb entry data set. */
-
-void kvm_mips_dump_host_tlbs(void)
-{
- unsigned long flags;
-
- local_irq_save(flags);
-
- kvm_info("HOST TLBs:\n");
- dump_tlb_regs();
- pr_info("\n");
- dump_tlb_all();
-
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL_GPL(kvm_mips_dump_host_tlbs);
-
-void kvm_mips_dump_guest_tlbs(struct kvm_vcpu *vcpu)
-{
- struct mips_coproc *cop0 = vcpu->arch.cop0;
- struct kvm_mips_tlb tlb;
- int i;
-
- kvm_info("Guest TLBs:\n");
- kvm_info("Guest EntryHi: %#lx\n", kvm_read_c0_guest_entryhi(cop0));
-
- for (i = 0; i < KVM_MIPS_GUEST_TLB_SIZE; i++) {
- tlb = vcpu->arch.guest_tlb[i];
- kvm_info("TLB%c%3d Hi 0x%08lx ",
- (tlb.tlb_lo[0] | tlb.tlb_lo[1]) & ENTRYLO_V
- ? ' ' : '*',
- i, tlb.tlb_hi);
- kvm_info("Lo0=0x%09llx %c%c attr %lx ",
- (u64) mips3_tlbpfn_to_paddr(tlb.tlb_lo[0]),
- (tlb.tlb_lo[0] & ENTRYLO_D) ? 'D' : ' ',
- (tlb.tlb_lo[0] & ENTRYLO_G) ? 'G' : ' ',
- (tlb.tlb_lo[0] & ENTRYLO_C) >> ENTRYLO_C_SHIFT);
- kvm_info("Lo1=0x%09llx %c%c attr %lx sz=%lx\n",
- (u64) mips3_tlbpfn_to_paddr(tlb.tlb_lo[1]),
- (tlb.tlb_lo[1] & ENTRYLO_D) ? 'D' : ' ',
- (tlb.tlb_lo[1] & ENTRYLO_G) ? 'G' : ' ',
- (tlb.tlb_lo[1] & ENTRYLO_C) >> ENTRYLO_C_SHIFT,
- tlb.tlb_mask);
- }
-}
-EXPORT_SYMBOL_GPL(kvm_mips_dump_guest_tlbs);
-
-int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long entryhi)
-{
- int i;
- int index = -1;
- struct kvm_mips_tlb *tlb = vcpu->arch.guest_tlb;
-
- for (i = 0; i < KVM_MIPS_GUEST_TLB_SIZE; i++) {
- if (TLB_HI_VPN2_HIT(tlb[i], entryhi) &&
- TLB_HI_ASID_HIT(tlb[i], entryhi)) {
- index = i;
- break;
- }
- }
-
- kvm_debug("%s: entryhi: %#lx, index: %d lo0: %#lx, lo1: %#lx\n",
- __func__, entryhi, index, tlb[i].tlb_lo[0], tlb[i].tlb_lo[1]);
-
- return index;
-}
-EXPORT_SYMBOL_GPL(kvm_mips_guest_tlb_lookup);
static int _kvm_mips_host_tlb_inv(unsigned long entryhi)
{
@@ -163,54 +74,6 @@ static int _kvm_mips_host_tlb_inv(unsigned long entryhi)
return idx;
}
-int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long va,
- bool user, bool kernel)
-{
- /*
- * Initialize idx_user and idx_kernel to workaround bogus
- * maybe-initialized warning when using GCC 6.
- */
- int idx_user = 0, idx_kernel = 0;
- unsigned long flags, old_entryhi;
-
- local_irq_save(flags);
-
- old_entryhi = read_c0_entryhi();
-
- if (user)
- idx_user = _kvm_mips_host_tlb_inv((va & VPN2_MASK) |
- kvm_mips_get_user_asid(vcpu));
- if (kernel)
- idx_kernel = _kvm_mips_host_tlb_inv((va & VPN2_MASK) |
- kvm_mips_get_kernel_asid(vcpu));
-
- write_c0_entryhi(old_entryhi);
- mtc0_tlbw_hazard();
-
- local_irq_restore(flags);
-
- /*
- * We don't want to get reserved instruction exceptions for missing tlb
- * entries.
- */
- if (cpu_has_vtag_icache)
- flush_icache_all();
-
- if (user && idx_user >= 0)
- kvm_debug("%s: Invalidated guest user entryhi %#lx @ idx %d\n",
- __func__, (va & VPN2_MASK) |
- kvm_mips_get_user_asid(vcpu), idx_user);
- if (kernel && idx_kernel >= 0)
- kvm_debug("%s: Invalidated guest kernel entryhi %#lx @ idx %d\n",
- __func__, (va & VPN2_MASK) |
- kvm_mips_get_kernel_asid(vcpu), idx_kernel);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_mips_host_tlb_inv);
-
-#ifdef CONFIG_KVM_MIPS_VZ
-
/* GuestID management */
/**
@@ -661,40 +524,3 @@ void kvm_loongson_clear_guest_ftlb(void)
}
EXPORT_SYMBOL_GPL(kvm_loongson_clear_guest_ftlb);
#endif
-
-#endif
-
-/**
- * kvm_mips_suspend_mm() - Suspend the active mm.
- * @cpu The CPU we're running on.
- *
- * Suspend the active_mm, ready for a switch to a KVM guest virtual address
- * space. This is left active for the duration of guest context, including time
- * with interrupts enabled, so we need to be careful not to confuse e.g. cache
- * management IPIs.
- *
- * kvm_mips_resume_mm() should be called before context switching to a different
- * process so we don't need to worry about reference counting.
- *
- * This needs to be in static kernel code to avoid exporting init_mm.
- */
-void kvm_mips_suspend_mm(int cpu)
-{
- cpumask_clear_cpu(cpu, mm_cpumask(current->active_mm));
- current->active_mm = &init_mm;
-}
-EXPORT_SYMBOL_GPL(kvm_mips_suspend_mm);
-
-/**
- * kvm_mips_resume_mm() - Resume the current process mm.
- * @cpu The CPU we're running on.
- *
- * Resume the mm of the current process, after a switch back from a KVM guest
- * virtual address space (see kvm_mips_suspend_mm()).
- */
-void kvm_mips_resume_mm(int cpu)
-{
- cpumask_set_cpu(cpu, mm_cpumask(current->mm));
- current->active_mm = current->mm;
-}
-EXPORT_SYMBOL_GPL(kvm_mips_resume_mm);