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| author | Ingo Molnar <mingo@kernel.org> | 2021-06-03 19:00:49 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-06-03 19:00:49 +0200 |
| commit | a9e906b71f963f19aabf7af59f73f37c929a5221 (patch) | |
| tree | 0228f82f4719160cfa4635c0c042c9c73fc2d2a5 /arch/arm64/kvm/arm.c | |
| parent | 475ea6c60279e9f2ddf7e4cf2648cd8ae0608361 (diff) | |
| parent | fcf6631f3736985ec89bdd76392d3c7bfb60119f (diff) | |
| download | linux-a9e906b71f963f19aabf7af59f73f37c929a5221.tar.gz linux-a9e906b71f963f19aabf7af59f73f37c929a5221.tar.bz2 linux-a9e906b71f963f19aabf7af59f73f37c929a5221.zip | |
Merge branch 'sched/urgent' into sched/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/kvm/arm.c')
| -rw-r--r-- | arch/arm64/kvm/arm.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 1cb39c0803a4..e720148232a0 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -720,11 +720,13 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) return ret; } - if (run->immediate_exit) - return -EINTR; - vcpu_load(vcpu); + if (run->immediate_exit) { + ret = -EINTR; + goto out; + } + kvm_sigset_activate(vcpu); ret = 1; @@ -897,6 +899,18 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) kvm_sigset_deactivate(vcpu); +out: + /* + * In the unlikely event that we are returning to userspace + * with pending exceptions or PC adjustment, commit these + * adjustments in order to give userspace a consistent view of + * the vcpu state. Note that this relies on __kvm_adjust_pc() + * being preempt-safe on VHE. + */ + if (unlikely(vcpu->arch.flags & (KVM_ARM64_PENDING_EXCEPTION | + KVM_ARM64_INCREMENT_PC))) + kvm_call_hyp(__kvm_adjust_pc, vcpu); + vcpu_put(vcpu); return ret; } |