[PATCH RESEND v2 06/17] KVM: Pass in kvm pointer into mark_page_dirty_in_slot()

Peter Xu
2019-12-21T01:50:03Z

The context will be needed to implement the kvm dirty ring.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
virt/kvm/kvm_main.c | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c80a363831ae..17969cf110dd 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -144,7 +144,9 @@ static void hardware_disable_all(void);

static void kvm_io_bus_destroy(struct kvm_io_bus *bus);

-static void mark_page_dirty_in_slot(struct kvm_memory_slot *memslot, gfn_t gfn);
+static void mark_page_dirty_in_slot(struct kvm *kvm,
+ struct kvm_memory_slot *memslot,
+ gfn_t gfn);

__visible bool kvm_rebooting;
EXPORT_SYMBOL_GPL(kvm_rebooting);
@@ -2053,8 +2055,9 @@ int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa,
}
EXPORT_SYMBOL_GPL(kvm_vcpu_read_guest_atomic);

-static int __kvm_write_guest_page(struct kvm_memory_slot *memslot, gfn_t gfn,
- const void *data, int offset, int len,
+static int __kvm_write_guest_page(struct kvm *kvm,
+ struct kvm_memory_slot *memslot, gfn_t gfn,
+ const void *data, int offset, int len,
bool track_dirty)
{
int r;
@@ -2067,7 +2070,7 @@ static int __kvm_write_guest_page(struct kvm_memory_slot *memslot, gfn_t gfn,
if (r)
return -EFAULT;
if (track_dirty)
- mark_page_dirty_in_slot(memslot, gfn);
+ mark_page_dirty_in_slot(kvm, memslot, gfn);
return 0;
}

@@ -2077,7 +2080,7 @@ int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn,
{
struct kvm_memory_slot *slot = gfn_to_memslot(kvm, gfn);

- return __kvm_write_guest_page(slot, gfn, data, offset, len,
+ return __kvm_write_guest_page(kvm, slot, gfn, data, offset, len,
track_dirty);
}
EXPORT_SYMBOL_GPL(kvm_write_guest_page);
@@ -2087,7 +2090,7 @@ int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn,
{
struct kvm_memory_slot *slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);

- return __kvm_write_guest_page(slot, gfn, data, offset,
+ return __kvm_write_guest_page(vcpu->kvm, slot, gfn, data, offset,
len, true);
}
EXPORT_SYMBOL_GPL(kvm_vcpu_write_guest_page);
@@ -2202,7 +2205,7 @@ int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
r = __copy_to_user((void __user *)ghc->hva + offset, data, len);
if (r)
return -EFAULT;
- mark_page_dirty_in_slot(ghc->memslot, gpa >> PAGE_SHIFT);
+ mark_page_dirty_in_slot(kvm, ghc->memslot, gpa >> PAGE_SHIFT);

return 0;
}
@@ -2269,7 +2272,8 @@ int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len)
}
EXPORT_SYMBOL_GPL(kvm_clear_guest);

-static void mark_page_dirty_in_slot(struct kvm_memory_slot *memslot,
+static void mark_page_dirty_in_slot(struct kvm *kvm,
+ struct kvm_memory_slot *memslot,
gfn_t gfn)
{
if (memslot && memslot->dirty_bitmap) {
@@ -2284,7 +2288,7 @@ void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
struct kvm_memory_slot *memslot;

memslot = gfn_to_memslot(kvm, gfn);
- mark_page_dirty_in_slot(memslot, gfn);
+ mark_page_dirty_in_slot(kvm, memslot, gfn);
}
EXPORT_SYMBOL_GPL(mark_page_dirty);

@@ -2293,7 +2297,7 @@ void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn)
struct kvm_memory_slot *memslot;

memslot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
- mark_page_dirty_in_slot(memslot, gfn);
+ mark_page_dirty_in_slot(vcpu->kvm, memslot, gfn);
}
EXPORT_SYMBOL_GPL(kvm_vcpu_mark_page_dirty);

--
2.24.1