Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] KVM: guest-memfd: fix unused-function warning | Date | Wed, 29 Nov 2023 16:32:40 +0100 |
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From: Arnd Bergmann <arnd@arndb.de>
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, | ^~~~~~~~~~~~~~~~~~~~~~
Replace the #ifdef around the reference with a corresponding PTR_IF() check that lets the compiler know how it is otherwise used.
Fixes: a7800aa80ea4 ("KVM: Add KVM_CREATE_GUEST_MEMFD ioctl() for guest-specific backing memory") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- virt/kvm/guest_memfd.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index 16d58806e913..1a0355b95379 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -301,9 +301,8 @@ static int kvm_gmem_error_folio(struct address_space *mapping, static const struct address_space_operations kvm_gmem_aops = { .dirty_folio = noop_dirty_folio, -#ifdef CONFIG_MIGRATION - .migrate_folio = kvm_gmem_migrate_folio, -#endif + .migrate_folio = PTR_IF(IS_ENABLED(CONFIG_MIGRATION), + kvm_gmem_migrate_folio), .error_remove_folio = kvm_gmem_error_folio, }; -- 2.39.2
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