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authorJames Hogan <james.hogan@imgtec.com>2016-11-28 23:45:04 +0100
committerJames Hogan <james.hogan@imgtec.com>2017-02-03 16:21:08 +0100
commit4841e0dd4f53c127b11947bdbe4423b5e9014ebc (patch)
tree20404edba5267e5071f79ec98815430c6cd666a5 /arch/mips/kvm/trap_emul.c
parentKVM: MIPS/MMU: Convert guest physical map to page table (diff)
downloadlinux-4841e0dd4f53c127b11947bdbe4423b5e9014ebc.tar.xz
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KVM: MIPS: Update vcpu->mode and vcpu->cpu
Keep the vcpu->mode and vcpu->cpu variables up to date so that kvm_make_all_cpus_request() has a chance of functioning correctly. This will soon need to be used for kvm_flush_remote_tlbs(). We can easily update vcpu->cpu when the VCPU context is loaded or saved, which will happen when accessing guest context and when the guest is scheduled in and out. We need to be a little careful with vcpu->mode though, as we will in future be checking for outstanding VCPU requests, and this must be done after the value of IN_GUEST_MODE in vcpu->mode is visible to other CPUs. Otherwise the other CPU could fail to trigger an IPI to wait for completion dispite the VCPU request not being seen. 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/trap_emul.c')
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