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| author | James Hogan <james.hogan@imgtec.com> | 2016-11-15 00:06:05 +0000 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2017-02-03 15:20:48 +0000 |
| commit | a7ebb2e410f8be2b061557fd85241d75a1094221 (patch) | |
| tree | 2cd2cb798f22db8427b732a79cb4fd74ed9b8070 /arch/mips/include | |
| parent | 91cdee5710d5fe8f81915307b5ff38d364fbde33 (diff) | |
| download | linux-a7ebb2e410f8be2b061557fd85241d75a1094221.tar.bz2 | |
KVM: MIPS/T&E: active_mm = init_mm in guest context
Set init_mm as the active_mm and update mm_cpumask(current->mm) to
reflect that it isn't active when in guest context. This prevents cache
management code from attempting cache flushes on host virtual addresses
while in guest context, for example due to a cache management IPIs or
later when writing of dynamically translated code hits copy on write.
We do this using helpers in static kernel code to avoid having to export
init_mm to modules.
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/include')
| -rw-r--r-- | arch/mips/include/asm/kvm_host.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 9f319375835a..95320b7964a6 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -607,6 +607,10 @@ extern int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long entryhi); extern int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long entryhi); extern int kvm_mips_host_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long vaddr); + +void kvm_mips_suspend_mm(int cpu); +void kvm_mips_resume_mm(int cpu); + extern unsigned long kvm_mips_translate_guest_kseg0_to_hpa(struct kvm_vcpu *vcpu, unsigned long gva); extern void kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu, |