kvm_handle_hva_range is only used by the young notifiers. In a later
patch, it will be even further tied to the young notifiers. Instead of
renaming kvm_handle_hva_range to something like
kvm_handle_hva_range_young, simply remove kvm_handle_hva_range. This
seems slightly more readable, though there is slightly more code
duplication.
Finally, rename __kvm_handle_hva_range to kvm_handle_hva_range, now that
the name is available.
Suggested-by: David Matlack <dmatlack@xxxxxxxxxx>
Signed-off-by: James Houghton <jthoughton@xxxxxxxxxx>
---
virt/kvm/kvm_main.c | 74 +++++++++++++++++++++++----------------------
1 file changed, 38 insertions(+), 36 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 27186b06518a..8b234a9acdb3 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -551,8 +551,8 @@ static void kvm_null_fn(void)
node; \
node = interval_tree_iter_next(node, start, last)) \
-static __always_inline kvm_mn_ret_t __kvm_handle_hva_range(struct kvm *kvm,
- const struct kvm_mmu_notifier_range *range)
+static __always_inline kvm_mn_ret_t kvm_handle_hva_range(struct kvm *kvm,
+ const struct kvm_mmu_notifier_range *range)
{
struct kvm_mmu_notifier_return r = {
.ret = false,
@@ -628,33 +628,6 @@ static __always_inline kvm_mn_ret_t __kvm_handle_hva_range(struct kvm *kvm,
return r;
}
-static __always_inline int kvm_handle_hva_range(struct mmu_notifier *mn,
- unsigned long start,
- unsigned long end,
- gfn_handler_t handler,
- bool flush_on_ret)
-{
- struct kvm *kvm = mmu_notifier_to_kvm(mn);
- const struct kvm_mmu_notifier_range range = {
- .start = start,
- .end = end,
- .handler = handler,
- .on_lock = (void *)kvm_null_fn,
- .flush_on_ret = flush_on_ret,
- .may_block = false,
- };
-
- return __kvm_handle_hva_range(kvm, &range).ret;
-}
-
-static __always_inline int kvm_handle_hva_range_no_flush(struct mmu_notifier *mn,
- unsigned long start,
- unsigned long end,
- gfn_handler_t handler)
-{
- return kvm_handle_hva_range(mn, start, end, handler, false);
-}
-
void kvm_mmu_invalidate_begin(struct kvm *kvm)
{
lockdep_assert_held_write(&kvm->mmu_lock);
@@ -747,7 +720,7 @@ static int kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn,
* that guest memory has been reclaimed. This needs to be done *after*
* dropping mmu_lock, as x86's reclaim path is slooooow.
*/
- if (__kvm_handle_hva_range(kvm, &hva_range).found_memslot)
+ if (kvm_handle_hva_range(kvm, &hva_range).found_memslot)
kvm_arch_guest_memory_reclaimed(kvm);
return 0;
@@ -793,7 +766,7 @@ static void kvm_mmu_notifier_invalidate_range_end(struct mmu_notifier *mn,
};
bool wake;
- __kvm_handle_hva_range(kvm, &hva_range);
+ kvm_handle_hva_range(kvm, &hva_range);
/* Pairs with the increment in range_start(). */
spin_lock(&kvm->mn_invalidate_lock);
@@ -815,10 +788,20 @@ static int kvm_mmu_notifier_clear_flush_young(struct mmu_notifier *mn,
unsigned long start,
unsigned long end)
{
+ struct kvm *kvm = mmu_notifier_to_kvm(mn);
+ const struct kvm_mmu_notifier_range range = {
+ .start = start,
+ .end = end,
+ .handler = kvm_age_gfn,
+ .on_lock = (void *)kvm_null_fn,
+ .flush_on_ret =
+ !IS_ENABLED(CONFIG_KVM_ELIDE_TLB_FLUSH_IF_YOUNG),
+ .may_block = false,
+ };
+
trace_kvm_age_hva(start, end);
- return kvm_handle_hva_range(mn, start, end, kvm_age_gfn,
- !IS_ENABLED(CONFIG_KVM_ELIDE_TLB_FLUSH_IF_YOUNG));
+ return kvm_handle_hva_range(kvm, &range).ret;
}
static int kvm_mmu_notifier_clear_young(struct mmu_notifier *mn,
@@ -826,6 +809,16 @@ static int kvm_mmu_notifier_clear_young(struct mmu_notifier *mn,
unsigned long start,
unsigned long end)
{
+ struct kvm *kvm = mmu_notifier_to_kvm(mn);
+ const struct kvm_mmu_notifier_range range = {
+ .start = start,
+ .end = end,
+ .handler = kvm_age_gfn,
+ .on_lock = (void *)kvm_null_fn,
+ .flush_on_ret = false,
+ .may_block = false,
+ };
+
trace_kvm_age_hva(start, end);
/*
@@ -841,17 +834,26 @@ static int kvm_mmu_notifier_clear_young(struct mmu_notifier *mn,
* cadence. If we find this inaccurate, we might come up with a
* more sophisticated heuristic later.
*/
- return kvm_handle_hva_range_no_flush(mn, start, end, kvm_age_gfn);
+ return kvm_handle_hva_range(kvm, &range).ret;
}
static int kvm_mmu_notifier_test_young(struct mmu_notifier *mn,
struct mm_struct *mm,
unsigned long address)
{
+ struct kvm *kvm = mmu_notifier_to_kvm(mn);
+ const struct kvm_mmu_notifier_range range = {
+ .start = address,
+ .end = address + 1,
+ .handler = kvm_test_age_gfn,
+ .on_lock = (void *)kvm_null_fn,
+ .flush_on_ret = false,
+ .may_block = false,
+ };
+
trace_kvm_test_age_hva(address);
- return kvm_handle_hva_range_no_flush(mn, address, address + 1,
- kvm_test_age_gfn);
+ return kvm_handle_hva_range(kvm, &range).ret;
}
static void kvm_mmu_notifier_release(struct mmu_notifier *mn,
--
2.47.0.199.ga7371fff76-goog
