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KVM: PPC: Book3S PR: Transition to Suspended state when injecting interrupt

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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 <wei.guo.simon@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Simon Guo 2018-05-23 15:01:51 +08:00 committed by Paul Mackerras
parent caa3be92be
commit 25ddda07b6
1 changed files with 10 additions and 1 deletions
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11
arch/powerpc/kvm/book3s_64_mmu.c
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@ -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(