From: Marc Zyngier <maz@kernel.org>
Date: Mon, 26 Jul 2021 15:35:51 +0000 (+0100)
Subject: KVM: arm64: Use get_page() instead of kvm_get_pfn()
X-Git-Tag: v5.15-rc1~65^2~4^2~8^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0fe49630101b3ce23bd21a2788440ac719ec868a;p=thirdparty%2Flinux.git

KVM: arm64: Use get_page() instead of kvm_get_pfn()

When mapping a THP, we are guaranteed that the page isn't reserved,
and we can safely avoid the kvm_is_reserved_pfn() call.

Replace kvm_get_pfn() with get_page(pfn_to_page()).

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210726153552.1535838-6-maz@kernel.org
---

diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 116a2910a4a4a..6e002d30a4789 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -840,7 +840,7 @@ transparent_hugepage_adjust(struct kvm *kvm, struct kvm_memory_slot *memslot,
 		*ipap &= PMD_MASK;
 		kvm_release_pfn_clean(pfn);
 		pfn &= ~(PTRS_PER_PMD - 1);
-		kvm_get_pfn(pfn);
+		get_page(pfn_to_page(pfn));
 		*pfnp = pfn;
 
 		return PMD_SIZE;