Mana uses PAGE_POOL API. x86_64 defconfig doesn't select it:

ld: vmlinux.o: in function `mana_create_page_pool.isra.0':
mana_en.c:(.text+0x9ae36f): undefined reference to `page_pool_create'
ld: vmlinux.o: in function `mana_get_rxfrag':
mana_en.c:(.text+0x9afed1): undefined reference to `page_pool_alloc_pages'
make[3]: *** [/home/yury/work/linux/scripts/Makefile.vmlinux:37: vmlinux] Error 1
make[2]: *** [/home/yury/work/linux/Makefile:1154: vmlinux] Error 2
make[1]: *** [/home/yury/work/linux/Makefile:234: __sub-make] Error 2
make[1]: Leaving directory '/home/yury/work/build-linux-x86_64'
make: *** [Makefile:234: __sub-make] Error 2

So we need to select it explicitly.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
 drivers/net/ethernet/microsoft/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/microsoft/Kconfig b/drivers/net/ethernet/microsoft/Kconfig
index 090e6b983243..01eb7445ead9 100644
--- a/drivers/net/ethernet/microsoft/Kconfig
+++ b/drivers/net/ethernet/microsoft/Kconfig
@@ -20,6 +20,7 @@ config MICROSOFT_MANA
 	depends on PCI_MSI && X86_64
 	depends on PCI_HYPERV
 	select AUXILIARY_BUS
+	select PAGE_POOL
 	help
 	  This driver supports Microsoft Azure Network Adapter (MANA).
 	  So far, the driver is only supported on X86_64.
-- 
2.40.1

On 12/15/23 23:33, Yury Norov wrote:
> Mana uses PAGE_POOL API. x86_64 defconfig doesn't select it:
> 
> ld: vmlinux.o: in function `mana_create_page_pool.isra.0':
> mana_en.c:(.text+0x9ae36f): undefined reference to `page_pool_create'
> ld: vmlinux.o: in function `mana_get_rxfrag':
> mana_en.c:(.text+0x9afed1): undefined reference to `page_pool_alloc_pages'
> make[3]: *** [/home/yury/work/linux/scripts/Makefile.vmlinux:37: vmlinux] Error 1
> make[2]: *** [/home/yury/work/linux/Makefile:1154: vmlinux] Error 2
> make[1]: *** [/home/yury/work/linux/Makefile:234: __sub-make] Error 2
> make[1]: Leaving directory '/home/yury/work/build-linux-x86_64'
> make: *** [Makefile:234: __sub-make] Error 2
> 
> So we need to select it explicitly.
> 
Fixes: ca9c54d2 ("net: mana: Add a driver for Microsoft Azure Network Adapter")
> Signed-off-by: Yury Norov <yury.norov@gmail.com>

On Fri, Dec 15, 2023 at 12:33:53PM -0800, Yury Norov wrote:
> Mana uses PAGE_POOL API. x86_64 defconfig doesn't select it:
> 
> ld: vmlinux.o: in function `mana_create_page_pool.isra.0':
> mana_en.c:(.text+0x9ae36f): undefined reference to `page_pool_create'
> ld: vmlinux.o: in function `mana_get_rxfrag':
> mana_en.c:(.text+0x9afed1): undefined reference to `page_pool_alloc_pages'
> make[3]: *** [/home/yury/work/linux/scripts/Makefile.vmlinux:37: vmlinux] Error 1
> make[2]: *** [/home/yury/work/linux/Makefile:1154: vmlinux] Error 2
> make[1]: *** [/home/yury/work/linux/Makefile:234: __sub-make] Error 2
> make[1]: Leaving directory '/home/yury/work/build-linux-x86_64'
> make: *** [Makefile:234: __sub-make] Error 2
> 
> So we need to select it explicitly.
> 
> Signed-off-by: Yury Norov <yury.norov@gmail.com>

Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Simon Horman <horms@kernel.org> # build-tested