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KVM: Move kvm_{set,release}_page_{clean,dirty}() helpers up in kvm_main.c

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Hoist the kvm_{set,release}_page_{clean,dirty}() APIs further up in
kvm_main.c so that they can be used by the kvm_follow_pfn family of APIs.

No functional change intended.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20241010182427.1434605-29-seanjc@google.com>
This commit is contained in:
Sean Christopherson 2024-10-10 11:23:30 -07:00 committed by Paolo Bonzini
parent 3dd48ecfac
commit 775e3ff7bf
1 changed files with 41 additions and 41 deletions
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82
virt/kvm/kvm_main.c
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@ -2746,6 +2746,47 @@ unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *w
return gfn_to_hva_memslot_prot(slot, gfn, writable);
}
static bool kvm_is_ad_tracked_page(struct page *page)
{
/*
* Per page-flags.h, pages tagged PG_reserved "should in general not be
* touched (e.g. set dirty) except by its owner".
*/
return !PageReserved(page);
}
static void kvm_set_page_dirty(struct page *page)
{
if (kvm_is_ad_tracked_page(page))
SetPageDirty(page);
}
static void kvm_set_page_accessed(struct page *page)
{
if (kvm_is_ad_tracked_page(page))
mark_page_accessed(page);
}
void kvm_release_page_clean(struct page *page)
{
if (!page)
return;
kvm_set_page_accessed(page);
put_page(page);
}
EXPORT_SYMBOL_GPL(kvm_release_page_clean);
void kvm_release_page_dirty(struct page *page)
{
if (!page)
return;
kvm_set_page_dirty(page);
kvm_release_page_clean(page);
}
EXPORT_SYMBOL_GPL(kvm_release_page_dirty);
static kvm_pfn_t kvm_resolve_pfn(struct kvm_follow_pfn *kfp, struct page *page,
struct follow_pfnmap_args *map, bool writable)
{
@ -3099,37 +3140,6 @@ void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty)
}
EXPORT_SYMBOL_GPL(kvm_vcpu_unmap);
static bool kvm_is_ad_tracked_page(struct page *page)
{
/*
* Per page-flags.h, pages tagged PG_reserved "should in general not be
* touched (e.g. set dirty) except by its owner".
*/
return !PageReserved(page);
}
static void kvm_set_page_dirty(struct page *page)
{
if (kvm_is_ad_tracked_page(page))
SetPageDirty(page);
}
static void kvm_set_page_accessed(struct page *page)
{
if (kvm_is_ad_tracked_page(page))
mark_page_accessed(page);
}
void kvm_release_page_clean(struct page *page)
{
if (!page)
return;
kvm_set_page_accessed(page);
put_page(page);
}
EXPORT_SYMBOL_GPL(kvm_release_page_clean);
void kvm_release_pfn_clean(kvm_pfn_t pfn)
{
struct page *page;
@ -3145,16 +3155,6 @@ void kvm_release_pfn_clean(kvm_pfn_t pfn)
}
EXPORT_SYMBOL_GPL(kvm_release_pfn_clean);
void kvm_release_page_dirty(struct page *page)
{
if (!page)
return;
kvm_set_page_dirty(page);
kvm_release_page_clean(page);
}
EXPORT_SYMBOL_GPL(kvm_release_page_dirty);
void kvm_release_pfn_dirty(kvm_pfn_t pfn)
{
struct page *page;