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KVM: Use plain "struct page" pointer instead of single-entry array

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Use a single pointer instead of a single-entry array for the struct page
pointer in hva_to_pfn_fast().  Using an array makes the code unnecessarily
annoying to read and update.

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: <20241010182427.1434605-27-seanjc@google.com>
This commit is contained in:
Sean Christopherson 2024-10-10 11:23:28 -07:00 committed by Paolo Bonzini
parent a629ef9518
commit 12fac89950
1 changed files with 3 additions and 3 deletions
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6
virt/kvm/kvm_main.c
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@ -2752,7 +2752,7 @@ unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *w
*/
static bool hva_to_pfn_fast(struct kvm_follow_pfn *kfp, kvm_pfn_t *pfn)
{
struct page *page[1];
struct page *page;
/*
* Fast pin a writable pfn only if it is a write fault request
@ -2762,8 +2762,8 @@ static bool hva_to_pfn_fast(struct kvm_follow_pfn *kfp, kvm_pfn_t *pfn)
if (!((kfp->flags & FOLL_WRITE) || kfp->map_writable))
return false;
if (get_user_page_fast_only(kfp->hva, FOLL_WRITE, page)) {
*pfn = page_to_pfn(page[0]);
if (get_user_page_fast_only(kfp->hva, FOLL_WRITE, &page)) {
*pfn = page_to_pfn(page);
if (kfp->map_writable)
*kfp->map_writable = true;
return true;