From 25ddda07b6e55a12065631e20f7f1e198230502f Mon Sep 17 00:00:00 2001 From: Simon Guo Date: Wed, 23 May 2018 15:01:51 +0800 Subject: KVM: PPC: Book3S PR: Transition to Suspended state when injecting interrupt This patch simulates interrupt behavior per Power ISA while injecting interrupt in PR KVM: - When interrupt happens, transactional state should be suspended. kvmppc_mmu_book3s_64_reset_msr() will be invoked when injecting an interrupt. This patch performs this ISA logic in kvmppc_mmu_book3s_64_reset_msr(). Signed-off-by: Simon Guo Signed-off-by: Paul Mackerras --- arch/powerpc/kvm/book3s_64_mmu.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/kvm') diff --git a/arch/powerpc/kvm/book3s_64_mmu.c b/arch/powerpc/kvm/book3s_64_mmu.c index a93d719edc90..cf9d686e8162 100644 --- a/arch/powerpc/kvm/book3s_64_mmu.c +++ b/arch/powerpc/kvm/book3s_64_mmu.c @@ -38,7 +38,16 @@ static void kvmppc_mmu_book3s_64_reset_msr(struct kvm_vcpu *vcpu) { - kvmppc_set_msr(vcpu, vcpu->arch.intr_msr); + unsigned long msr = vcpu->arch.intr_msr; + unsigned long cur_msr = kvmppc_get_msr(vcpu); + + /* If transactional, change to suspend mode on IRQ delivery */ + if (MSR_TM_TRANSACTIONAL(cur_msr)) + msr |= MSR_TS_S; + else + msr |= cur_msr & MSR_TS_MASK; + + kvmppc_set_msr(vcpu, msr); } static struct kvmppc_slb *kvmppc_mmu_book3s_64_find_slbe( -- cgit v1.2.3