Thread (43 messages) flat view 43 messages, 2 authors, 1d ago
WARM1d

[PATCH v10 01/41] KVM: guest_memfd: Use kvm_mem_is_private() when populating guest_memfd memory

From: Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
Date: 2026-08-07 21:52:47
Also in: b4-sent, kvm, linux-coco, linux-doc, linux-kselftest, linux-mm, lkml
Subsystem: kernel virtual machine (kvm), the rest · Maintainers: Paolo Bonzini, Linus Torvalds

From: Sean Christopherson <seanjc@google.com>

Using kvm_mem_is_private() when populating guest_memfd instead of using an
open coded equivalent.  In addition to simplifying the populate code *now*,
this avoids the need to provide a range-based gmem lookup API in the future
as well.

No functional change intended.

Suggested-by: Xiaoyao Li <redacted>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Ackerley Tng <redacted>
---
 virt/kvm/guest_memfd.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c
index b596486d184ca..a11cf6dc785da 100644
--- a/virt/kvm/guest_memfd.c
+++ b/virt/kvm/guest_memfd.c
@@ -811,9 +811,7 @@ static long __kvm_gmem_populate(struct kvm *kvm, struct kvm_memory_slot *slot,
 
 	folio_unlock(folio);
 
-	if (!kvm_range_has_memory_attributes(kvm, gfn, gfn + 1,
-					     KVM_MEMORY_ATTRIBUTE_PRIVATE,
-					     KVM_MEMORY_ATTRIBUTE_PRIVATE)) {
+	if (!kvm_mem_is_private(kvm, gfn)) {
 		ret = -EINVAL;
 		goto out_put_folio;
 	}
-- 
2.55.0.654.g21b8a5bc05-goog

Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help