diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2024-07-11 18:27:51 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-07-26 14:46:14 -0400 |
| commit | 7239ed74677af143857d1a96d402476446a0995a (patch) | |
| tree | 25c69a9ee44d04997f94392f85a53eecc5adaf21 /virt/kvm | |
| parent | 6dd761d92f6600342860c618639489bb9c3843ea (diff) | |
| download | linux-7239ed74677af143857d1a96d402476446a0995a.tar.gz linux-7239ed74677af143857d1a96d402476446a0995a.tar.bz2 linux-7239ed74677af143857d1a96d402476446a0995a.zip | |
KVM: remove kvm_arch_gmem_prepare_needed()
It is enough to return 0 if a guest need not do any preparation.
This is in fact how sev_gmem_prepare() works for non-SNP guests,
and it extends naturally to Intel hosts: the x86 callback for
gmem_prepare is optional and returns 0 if not defined.
Reviewed-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/guest_memfd.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index 444ded162154..191fd42067c0 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -29,16 +29,9 @@ static int __kvm_gmem_prepare_folio(struct kvm *kvm, struct kvm_memory_slot *slo pgoff_t index, struct folio *folio) { #ifdef CONFIG_HAVE_KVM_ARCH_GMEM_PREPARE - kvm_pfn_t pfn; - gfn_t gfn; - int rc; - - if (!kvm_arch_gmem_prepare_needed(kvm)) - return 0; - - pfn = folio_file_pfn(folio, index); - gfn = slot->base_gfn + index - slot->gmem.pgoff; - rc = kvm_arch_gmem_prepare(kvm, gfn, pfn, folio_order(folio)); + 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); |