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| author | James Hogan <james.hogan@imgtec.com> | 2016-10-07 22:39:41 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2017-02-03 15:21:04 +0000 |
| commit | a98dd7410370634496aa500abf90ec6336b494ae (patch) | |
| tree | a79e8df408794e56f7e5a5b3ecd4c9d676604181 /arch/mips/kvm | |
| parent | 7071a8859bb36d34b8f766275b239e98760f010c (diff) | |
| download | lwn-a98dd7410370634496aa500abf90ec6336b494ae.tar.gz lwn-a98dd7410370634496aa500abf90ec6336b494ae.zip | |
KVM: MIPS/MMU: Drop kvm_get_new_mmu_context()
MIPS KVM uses its own variation of get_new_mmu_context() which takes an
extra vcpu pointer (unused) and does exactly the same thing.
Switch to just using get_new_mmu_context() directly and drop KVM's
version of it as it doesn't really serve any purpose.
The nearby declarations of kvm_mips_alloc_new_mmu_context(),
kvm_mips_vcpu_load() and kvm_mips_vcpu_put() are also removed from
kvm_host.h, as no definitions or users exist.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Diffstat (limited to 'arch/mips/kvm')
| -rw-r--r-- | arch/mips/kvm/emulate.c | 3 | ||||
| -rw-r--r-- | arch/mips/kvm/mmu.c | 19 | ||||
| -rw-r--r-- | arch/mips/kvm/trap_emul.c | 6 |
3 files changed, 4 insertions, 24 deletions
diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c index cd11d787d9dc..67ea39973b96 100644 --- a/arch/mips/kvm/emulate.c +++ b/arch/mips/kvm/emulate.c @@ -1198,8 +1198,7 @@ enum emulation_result kvm_mips_emulate_CP0(union mips_instruction inst, */ preempt_disable(); cpu = smp_processor_id(); - kvm_get_new_mmu_context(kern_mm, - cpu, vcpu); + get_new_mmu_context(kern_mm, cpu); for_each_possible_cpu(i) if (i != cpu) cpu_context(i, kern_mm) = 0; diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c index cf832ea963d8..aab604e75d3b 100644 --- a/arch/mips/kvm/mmu.c +++ b/arch/mips/kvm/mmu.c @@ -443,25 +443,6 @@ int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr, return 0; } -void kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu, - struct kvm_vcpu *vcpu) -{ - unsigned long asid = asid_cache(cpu); - - asid += cpu_asid_inc(); - if (!(asid & cpu_asid_mask(&cpu_data[cpu]))) { - if (cpu_has_vtag_icache) - flush_icache_all(); - - local_flush_tlb_all(); /* start new asid cycle */ - - if (!asid) /* fix version if needed */ - asid = asid_first_version(cpu); - } - - cpu_context(cpu, mm) = asid_cache(cpu) = asid; -} - /** * kvm_mips_migrate_count() - Migrate timer. * @vcpu: Virtual CPU. diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c index ee8b5ad8c7c5..653850c05b33 100644 --- a/arch/mips/kvm/trap_emul.c +++ b/arch/mips/kvm/trap_emul.c @@ -706,7 +706,7 @@ static int kvm_trap_emul_vcpu_load(struct kvm_vcpu *vcpu, int cpu) if ((cpu_context(cpu, kern_mm) ^ asid_cache(cpu)) & asid_version_mask(cpu)) { - kvm_get_new_mmu_context(kern_mm, cpu, vcpu); + get_new_mmu_context(kern_mm, cpu); kvm_debug("[%d]: cpu_context: %#lx\n", cpu, cpu_context(cpu, current->mm)); @@ -716,7 +716,7 @@ static int kvm_trap_emul_vcpu_load(struct kvm_vcpu *vcpu, int cpu) if ((cpu_context(cpu, user_mm) ^ asid_cache(cpu)) & asid_version_mask(cpu)) { - kvm_get_new_mmu_context(user_mm, cpu, vcpu); + get_new_mmu_context(user_mm, cpu); kvm_debug("[%d]: cpu_context: %#lx\n", cpu, cpu_context(cpu, current->mm)); @@ -779,7 +779,7 @@ static void kvm_trap_emul_vcpu_reenter(struct kvm_run *run, gasid = kvm_read_c0_guest_entryhi(cop0) & KVM_ENTRYHI_ASID; if (gasid != vcpu->arch.last_user_gasid) { kvm_mips_flush_gva_pt(user_mm->pgd, KMF_USER); - kvm_get_new_mmu_context(user_mm, cpu, vcpu); + get_new_mmu_context(user_mm, cpu); for_each_possible_cpu(i) if (i != cpu) cpu_context(i, user_mm) = 0; |