Provide the basics for architectures to implement a fast-only version of
kvm_{test_,}age_gfn.
Signed-off-by: James Houghton <jthoughton@xxxxxxxxxx>
---
include/linux/kvm_host.h | 1 +
virt/kvm/kvm_main.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 98a987e88578..55861db556e2 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -258,6 +258,7 @@ int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
#ifdef CONFIG_KVM_GENERIC_MMU_NOTIFIER
union kvm_mmu_notifier_arg {
unsigned long attributes;
+ bool fast_only;
};
struct kvm_gfn_range {
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index ec07caaed6b6..8630dfc82d61 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -867,6 +867,7 @@ static int kvm_mmu_notifier_clear_young(struct mmu_notifier *mn,
.may_block = false,
.lockless =
IS_ENABLED(CONFIG_KVM_MMU_NOTIFIER_YOUNG_LOCKLESS),
+ .arg.fast_only = fast_only,
};
trace_kvm_age_hva(start, end, fast_only);
@@ -902,6 +903,7 @@ static int kvm_mmu_notifier_test_young(struct mmu_notifier *mn,
.may_block = false,
.lockless =
IS_ENABLED(CONFIG_KVM_MMU_NOTIFIER_YOUNG_LOCKLESS),
+ .arg.fast_only = fast_only,
};
trace_kvm_test_age_hva(address, fast_only);
--
2.46.0.792.g87dc391469-goog
