From: Nuno Das Neves <nunodasneves@linux.microsoft.com>
To: Wei Liu <wei.liu@kernel.org>, kernel test robot <lkp@intel.com>
Cc: oe-kbuild-all@lists.linux.dev,
Anirudh Rayabharam <anrayabh@linux.microsoft.com>,
Jinank Jain <jinankjain@microsoft.com>,
Mukesh Rathor <mrathor@linux.microsoft.com>,
Muminul Islam <muislam@microsoft.com>,
Praveen K Paladugu <prapal@linux.microsoft.com>,
Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>,
Roman Kisel <romank@linux.microsoft.com>
Subject: Re: [linux-next:master 12013/12769] drivers/hv/mshv_eventfd.c:399:19: error: implicit declaration of function 'eventfd_ctx_fileget'; did you mean 'eventfd_ctx_fdget'?
Date: Thu, 20 Mar 2025 14:19:07 -0700 [thread overview]
Message-ID: <7ee6fe32-ec72-4aff-ab7e-e86ee12b21a2@linux.microsoft.com> (raw)
In-Reply-To: <Z9yAiQePXWm7Q9J3@liuwe-devbox-ubuntu-v2.lamzopl0uupeniq2etz1fddiyg.xx.internal.cloudapp.net>
On 3/20/2025 1:54 PM, Wei Liu wrote:
> On Fri, Mar 21, 2025 at 04:17:50AM +0800, kernel test robot wrote:
>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>> head: 73b8c1dbc2508188e383023080ce6a582ff5f279
>> commit: f5288d14069b6580405b6f0d1c4ccd45c7ac97bf [12013/12769] Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs
>> config: x86_64-randconfig-076-20250321 (https://download.01.org/0day-ci/archive/20250321/202503210422.6u1LLUSg-lkp@intel.com/config)
>> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
>> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250321/202503210422.6u1LLUSg-lkp@intel.com/reproduce)
>>
>> If you fix the issue in a separate patch/commit (i.e. not just a new version of
>> the same patch/commit), kindly add following tags
>> | Reported-by: kernel test robot <lkp@intel.com>
>> | Closes: https://lore.kernel.org/oe-kbuild-all/202503210422.6u1LLUSg-lkp@intel.com/
>>
>> All error/warnings (new ones prefixed by >>):
>>
>> drivers/hv/mshv_eventfd.c: In function 'mshv_irqfd_assign':
>>>> drivers/hv/mshv_eventfd.c:399:19: error: implicit declaration of function 'eventfd_ctx_fileget'; did you mean 'eventfd_ctx_fdget'? [-Werror=implicit-function-declaration]
>> 399 | eventfd = eventfd_ctx_fileget(fd_file(f));
>> | ^~~~~~~~~~~~~~~~~~~
>> | eventfd_ctx_fdget
>>>> drivers/hv/mshv_eventfd.c:399:17: warning: assignment to 'struct eventfd_ctx *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
>> 399 | eventfd = eventfd_ctx_fileget(fd_file(f));
>> | ^
>> cc1: some warnings being treated as errors
>
> Nuno, it looks like we need this:
>
> diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
> index 3118d5472fab..6c1416167bd2 100644
> --- a/drivers/hv/Kconfig
> +++ b/drivers/hv/Kconfig
> @@ -64,6 +64,7 @@ config MSHV_ROOT
> # e.g. When withdrawing memory, the hypervisor gives back 4k pages in
> # no particular order, making it impossible to reassemble larger pages
> depends on PAGE_SIZE_4KB
> + select EVENTFD
> default n
> help
> Select this option to enable support for booting and running as root
Yep, we definitely need that, I forgot to add it.
prev parent reply other threads:[~2025-03-20 21:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-20 20:17 [linux-next:master 12013/12769] drivers/hv/mshv_eventfd.c:399:19: error: implicit declaration of function 'eventfd_ctx_fileget'; did you mean 'eventfd_ctx_fdget'? kernel test robot
2025-03-20 20:54 ` Wei Liu
2025-03-20 21:19 ` Nuno Das Neves [this message]
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