[PATCH v5 3/7] KVM: guest_memfd: Drop the redundant printk on arch gmem_prepare() failure

From: Sean Christopherson

Date: Tue Jul 14 2026 - 19:11:06 EST


Drop guest_memfd's ratelimited printk to log "preparation" failures, as KVM
SNP alreads logs more precise messages in all error paths, and whether or
not failure to convert the pfn to private is "unexpected", i.e. warrants
logging, is firmly an architecture specific detail.

Reviewed-by: Ackerley Tng <ackerleytng@xxxxxxxxxx>
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
virt/kvm/guest_memfd.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c
index d5d227476cda..62c2c157f0c1 100644
--- a/virt/kvm/guest_memfd.c
+++ b/virt/kvm/guest_memfd.c
@@ -66,15 +66,11 @@ static int __kvm_gmem_prepare_folio(struct kvm *kvm, struct kvm_memory_slot *slo
#ifdef CONFIG_HAVE_KVM_ARCH_GMEM_PREPARE
kvm_pfn_t pfn = folio_file_pfn(folio, index);
gfn_t gfn = slot->base_gfn + index - slot->gmem.pgoff;
- int rc = kvm_arch_gmem_prepare(kvm, gfn, pfn, folio_order(folio));
- if (rc) {
- pr_warn_ratelimited("gmem: Failed to prepare folio for index %lx GFN %llx PFN %llx error %d.\n",
- index, gfn, pfn, rc);
- return rc;
- }
-#endif

+ return kvm_arch_gmem_prepare(kvm, gfn, pfn, folio_order(folio));
+#else
return 0;
+#endif
}

/*
--
2.55.0.141.g00534a21ce-goog