[PATCH v2 5/8] KVM: Do not incorporate page offset into gfn=>pfn cache user address

[Sean Christopherson <seanjc@google.com>]

Don't adjust the userspace address in the gfn=>pfn cache by the page
offset from the gpa.  KVM should never use the user address directly, and
all KVM operations that translate a user address to something else
require the user address to be page aligned.  Ignoring the offset will
allow the cache to reuse a gfn=>hva translation in the unlikely event
that the page offset of the gpa changes, but the gfn does not.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 virt/kvm/pfncache.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/virt/kvm/pfncache.c b/virt/kvm/pfncache.c
index 40cbe90d52e0..05cb0bcbf662 100644
--- a/virt/kvm/pfncache.c
+++ b/virt/kvm/pfncache.c
@@ -179,8 +179,6 @@ int kvm_gfn_to_pfn_cache_refresh(struct kvm *kvm, struct gfn_to_pfn_cache *gpc,
 			ret = -EFAULT;
 			goto out;
 		}
-
-		gpc->uhva += page_offset;
 	}
 
 	/*
-- 
2.36.0.rc2.479.g8af0fa9b8e-goog