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| author | Paolo Bonzini <pbonzini@redhat.com> | 2023-12-08 13:46:48 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-12-08 13:46:48 -0500 |
| commit | 80583d0cfd8ff44d60a5fa76a6bf3c08eb67c328 (patch) | |
| tree | 259800ea1082a602d06afbd852db91b8fb998fa4 /virt | |
| parent | 849c1816436fe359e85587fba5b69ddd3a957b31 (diff) | |
| download | lwn-80583d0cfd8ff44d60a5fa76a6bf3c08eb67c328.tar.gz lwn-80583d0cfd8ff44d60a5fa76a6bf3c08eb67c328.zip | |
KVM: guest-memfd: fix unused-function warning
With migration disabled, one function becomes unused:
virt/kvm/guest_memfd.c:262:12: error: 'kvm_gmem_migrate_folio' defined but not used [-Werror=unused-function]
262 | static int kvm_gmem_migrate_folio(struct address_space *mapping,
| ^~~~~~~~~~~~~~~~~~~~~~
Remove the #ifdef around the reference so that fallback_migrate_folio()
is never used. The gmem implementation of the hook is trivial; since
the gmem mapping is unmovable, the pages should not be migrated anyway.
Fixes: a7800aa80ea4 ("KVM: Add KVM_CREATE_GUEST_MEMFD ioctl() for guest-specific backing memory")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/guest_memfd.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index b99272396119..c2e2371720a9 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -300,9 +300,7 @@ static int kvm_gmem_error_page(struct address_space *mapping, struct page *page) static const struct address_space_operations kvm_gmem_aops = { .dirty_folio = noop_dirty_folio, -#ifdef CONFIG_MIGRATION .migrate_folio = kvm_gmem_migrate_folio, -#endif .error_remove_page = kvm_gmem_error_page, }; |