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| author | James Hogan <james.hogan@imgtec.com> | 2016-10-11 23:14:39 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2017-02-03 15:20:45 +0000 |
| commit | c550d53934d821dbdd867ca314d417f2e918c72c (patch) | |
| tree | 54fd7a9dce7d5ae71c9720458a833f66d1619c99 /arch/mips/kvm/tlb.c | |
| parent | 1581ff3dbf698abba00f39039cc5bd854400b664 (diff) | |
| download | linux-c550d53934d821dbdd867ca314d417f2e918c72c.tar.gz linux-c550d53934d821dbdd867ca314d417f2e918c72c.tar.bz2 linux-c550d53934d821dbdd867ca314d417f2e918c72c.zip | |
KVM: MIPS: Remove duplicated ASIDs from vcpu
The kvm_vcpu_arch structure contains both mm_structs for allocating MMU
contexts (primarily the ASID) but it also copies the resulting ASIDs
into guest_{user,kernel}_asid[] arrays which are referenced from uasm
generated code.
This duplication doesn't seem to serve any purpose, and it gets in the
way of generalising the ASID handling across guest kernel/user modes, so
lets just extract the ASID straight out of the mm_struct on demand, and
in fact there are convenient cpu_context() and cpu_asid() macros for
doing so.
To reduce the verbosity of this code we do also add kern_mm and user_mm
local variables where the kernel and user mm_structs are used.
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/tlb.c')
| -rw-r--r-- | arch/mips/kvm/tlb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c index 254377d8e0b9..ba490130b5e7 100644 --- a/arch/mips/kvm/tlb.c +++ b/arch/mips/kvm/tlb.c @@ -38,18 +38,18 @@ EXPORT_SYMBOL_GPL(kvm_mips_instance); 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 vcpu->arch.guest_kernel_asid[cpu] & - cpu_asid_mask(&cpu_data[cpu]); + 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 vcpu->arch.guest_user_asid[cpu] & - cpu_asid_mask(&cpu_data[cpu]); + return cpu_asid(cpu, user_mm); } inline u32 kvm_mips_get_commpage_asid(struct kvm_vcpu *vcpu) |