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Date: Thu, 29 Sep 2022 03:35:55 +0800
From: kernel test robot <lkp@...el.com>
To: Jason Gunthorpe <jgg@...dia.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [jgunthorpe:vfio_iommufd 23/24] drivers/vfio/vfio.h:172:5: warning:
no previous prototype for function 'vfio_container_pin_pages'
tree: https://github.com/jgunthorpe/linux vfio_iommufd
head: a97b7f88065ebfd42e065dd37f092fadf031b154
commit: ba8f921671cd4870b4cdbaf6d605faa57aee226d [23/24] vfio: Make vfio_container optionally compiled
config: arm-buildonly-randconfig-r002-20220925
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://github.com/jgunthorpe/linux/commit/ba8f921671cd4870b4cdbaf6d605faa57aee226d
git remote add jgunthorpe https://github.com/jgunthorpe/linux
git fetch --no-tags jgunthorpe vfio_iommufd
git checkout ba8f921671cd4870b4cdbaf6d605faa57aee226d
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/iommu/ drivers/vfio/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from drivers/vfio/vfio_main.c:39:
>> drivers/vfio/vfio.h:172:5: warning: no previous prototype for function 'vfio_container_pin_pages' [-Wmissing-prototypes]
int vfio_container_pin_pages(struct vfio_container *container,
^
drivers/vfio/vfio.h:172:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int vfio_container_pin_pages(struct vfio_container *container,
^
static
>> drivers/vfio/vfio.h:179:6: warning: no previous prototype for function 'vfio_container_unpin_pages' [-Wmissing-prototypes]
void vfio_container_unpin_pages(struct vfio_container *container,
^
drivers/vfio/vfio.h:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void vfio_container_unpin_pages(struct vfio_container *container,
^
static
>> drivers/vfio/vfio.h:184:5: warning: no previous prototype for function 'vfio_container_dma_rw' [-Wmissing-prototypes]
int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
^
drivers/vfio/vfio.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
^
static
drivers/vfio/vfio_main.c:680:3: error: call to undeclared function 'vfio_group_detach_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
vfio_group_detach_container(group);
^
drivers/vfio/vfio_main.c:767:9: error: call to undeclared function 'vfio_group_use_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
ret = vfio_group_use_container(device->group);
^
drivers/vfio/vfio_main.c:767:9: note: did you mean 'vfio_group_ioctl_set_container'?
drivers/vfio/vfio_main.c:692:12: note: 'vfio_group_ioctl_set_container' declared here
static int vfio_group_ioctl_set_container(struct vfio_group *group,
^
drivers/vfio/vfio_main.c:783:3: error: call to undeclared function 'vfio_device_container_register'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
vfio_device_container_register(device);
^
drivers/vfio/vfio_main.c:789:3: error: call to undeclared function 'vfio_group_unuse_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
vfio_group_unuse_container(device->group);
^
drivers/vfio/vfio_main.c:789:3: note: did you mean 'vfio_group_ioctl_set_container'?
drivers/vfio/vfio_main.c:692:12: note: 'vfio_group_ioctl_set_container' declared here
static int vfio_group_ioctl_set_container(struct vfio_group *group,
^
drivers/vfio/vfio_main.c:804:3: error: call to undeclared function 'vfio_device_container_unregister'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
vfio_device_container_unregister(device);
^
drivers/vfio/vfio_main.c:809:3: error: call to undeclared function 'vfio_group_unuse_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
vfio_group_unuse_container(device->group);
^
drivers/vfio/vfio_main.c:1004:3: error: call to undeclared function 'vfio_group_detach_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
vfio_group_detach_container(group);
^
3 warnings and 7 errors generated.
--
In file included from drivers/vfio/iommufd.c:8:
>> drivers/vfio/vfio.h:172:5: warning: no previous prototype for function 'vfio_container_pin_pages' [-Wmissing-prototypes]
int vfio_container_pin_pages(struct vfio_container *container,
^
drivers/vfio/vfio.h:172:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int vfio_container_pin_pages(struct vfio_container *container,
^
static
>> drivers/vfio/vfio.h:179:6: warning: no previous prototype for function 'vfio_container_unpin_pages' [-Wmissing-prototypes]
void vfio_container_unpin_pages(struct vfio_container *container,
^
drivers/vfio/vfio.h:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void vfio_container_unpin_pages(struct vfio_container *container,
^
static
>> drivers/vfio/vfio.h:184:5: warning: no previous prototype for function 'vfio_container_dma_rw' [-Wmissing-prototypes]
int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
^
drivers/vfio/vfio.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
^
static
3 warnings generated.
--
In file included from drivers/vfio/vfio_iommu_type1.c:42:
>> drivers/vfio/vfio.h:172:5: warning: no previous prototype for function 'vfio_container_pin_pages' [-Wmissing-prototypes]
int vfio_container_pin_pages(struct vfio_container *container,
^
drivers/vfio/vfio.h:172:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int vfio_container_pin_pages(struct vfio_container *container,
^
static
>> drivers/vfio/vfio.h:179:6: warning: no previous prototype for function 'vfio_container_unpin_pages' [-Wmissing-prototypes]
void vfio_container_unpin_pages(struct vfio_container *container,
^
drivers/vfio/vfio.h:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void vfio_container_unpin_pages(struct vfio_container *container,
^
static
>> drivers/vfio/vfio.h:184:5: warning: no previous prototype for function 'vfio_container_dma_rw' [-Wmissing-prototypes]
int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
^
drivers/vfio/vfio.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
^
static
>> drivers/vfio/vfio_iommu_type1.c:3168:14: warning: declaration of 'enum vfio_iommu_notify_type' will not be visible outside of this function [-Wvisibility]
enum vfio_iommu_notify_type event)
^
drivers/vfio/vfio_iommu_type1.c:3168:37: error: variable has incomplete type 'enum vfio_iommu_notify_type'
enum vfio_iommu_notify_type event)
^
drivers/vfio/vfio_iommu_type1.c:3168:14: note: forward declaration of 'enum vfio_iommu_notify_type'
enum vfio_iommu_notify_type event)
^
drivers/vfio/vfio_iommu_type1.c:3172:15: error: use of undeclared identifier 'VFIO_IOMMU_CONTAINER_CLOSE'
if (event != VFIO_IOMMU_CONTAINER_CLOSE)
^
drivers/vfio/vfio_iommu_type1.c:3180:43: error: variable has incomplete type 'const struct vfio_iommu_driver_ops'
static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = {
^
drivers/vfio/vfio_iommu_type1.c:3180:21: note: forward declaration of 'struct vfio_iommu_driver_ops'
static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = {
^
drivers/vfio/vfio_iommu_type1.c:3199:9: error: call to undeclared function 'vfio_register_iommu_driver'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
return vfio_register_iommu_driver(&vfio_iommu_driver_ops_type1);
^
drivers/vfio/vfio_iommu_type1.c:3204:2: error: call to undeclared function 'vfio_unregister_iommu_driver'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
vfio_unregister_iommu_driver(&vfio_iommu_driver_ops_type1);
^
drivers/vfio/vfio_iommu_type1.c:3204:2: note: did you mean 'vfio_unregister_group_dev'?
include/linux/vfio.h:228:6: note: 'vfio_unregister_group_dev' declared here
void vfio_unregister_group_dev(struct vfio_device *device);
^
4 warnings and 5 errors generated.
Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for TEGRA20_APB_DMA
Depends on [n]: DMADEVICES [=n] && (ARCH_TEGRA [=y] || COMPILE_TEST [=y])
Selected by [y]:
- SOC_TEGRA_FUSE [=y] && ARCH_TEGRA [=y] && ARCH_TEGRA_2x_SOC [=y]
WARNING: unmet direct dependencies detected for VFIO_IOMMU_TYPE1
Depends on [n]: VFIO [=y] && VFIO_CONTAINER [=n]
Selected by [y]:
- VFIO [=y] && (IOMMUFD [=y] || !IOMMUFD [=y]) && MMU [=y] && (X86 || S390 || ARM [=y] || ARM64)
vim +/vfio_container_pin_pages +172 drivers/vfio/vfio.h
171
> 172 int vfio_container_pin_pages(struct vfio_container *container,
173 struct iommu_group *iommu_group, dma_addr_t iova,
174 int npage, int prot, struct page **pages)
175 {
176 return -EOPNOTSUPP;
177 }
178
> 179 void vfio_container_unpin_pages(struct vfio_container *container,
180 dma_addr_t iova, int npage)
181 {
182 }
183
> 184 int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
185 void *data, size_t len, bool write)
186 {
187 return -EOPNOTSUPP;
188 }
189
--
0-DAY CI Kernel Test Service
https://01.org/lkp
View attachment "config" of type "text/plain" (169676 bytes)
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