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| author | James Hogan <james.hogan@imgtec.com> | 2015-02-09 17:35:20 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2015-03-27 22:25:13 +0100 |
| commit | b86ecb3766abd9138289ff2a18381d25b73f4622 (patch) | |
| tree | fd0ca41fd27fd00c94a6d2022ecd04c8266ed9f8 /arch/mips/kvm/tlb.c | |
| parent | MIPS: KVM: Add Config4/5 and writing of Config registers (diff) | |
| download | linux-b86ecb3766abd9138289ff2a18381d25b73f4622.tar.xz linux-b86ecb3766abd9138289ff2a18381d25b73f4622.zip | |
MIPS: KVM: Add vcpu_get_regs/vcpu_set_regs callback
Add a vcpu_get_regs() and vcpu_set_regs() callbacks for loading and
restoring context which may be in hardware registers. This may include
floating point and MIPS SIMD Architecture (MSA) state which may be
accessed directly by the guest (but restored lazily by the hypervisor),
and also dedicated guest registers as provided by the VZ ASE.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.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 | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c index b6beb0e07b1b..aed0ac2a4972 100644 --- a/arch/mips/kvm/tlb.c +++ b/arch/mips/kvm/tlb.c @@ -733,6 +733,9 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) } } + /* restore guest state to registers */ + kvm_mips_callbacks->vcpu_set_regs(vcpu); + local_irq_restore(flags); } @@ -751,6 +754,9 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) vcpu->arch.preempt_entryhi = read_c0_entryhi(); vcpu->arch.last_sched_cpu = cpu; + /* save guest state in registers */ + kvm_mips_callbacks->vcpu_get_regs(vcpu); + if (((cpu_context(cpu, current->mm) ^ asid_cache(cpu)) & ASID_VERSION_MASK)) { kvm_debug("%s: Dropping MMU Context: %#lx\n", __func__, |