netdev - Re: [RFC PATCH v1 3/3] liburing: add test programs for napi busy poll

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Date:   Fri, 4 Nov 2022 05:20:20 +0700
From:   Ammar Faizi <ammarfaizi2@...weeb.org>
To:     Stefan Roesch <shr@...kernel.io>,
        Facebook Kernel Team <kernel-team@...com>
Cc:     Jens Axboe <axboe@...nel.dk>,
        Olivier Langlois <olivier@...llion01.com>,
        Jakub Kicinski <kuba@...nel.org>,
        netdev Mailing List <netdev@...r.kernel.org>,
        io-uring Mailing List <io-uring@...r.kernel.org>
Subject: Re: [RFC PATCH v1 3/3] liburing: add test programs for napi busy poll

On 11/4/22 3:40 AM, Stefan Roesch wrote:
> +void *encodeUserData(char type, int fd)
> +{
> +	return (void *)((uint32_t)fd | ((__u64)type << 56));
> +}
This breaks 32-bit build.

   i686-linux-gnu-gcc -Werror -D_GNU_SOURCE -D__SANE_USERSPACE_TYPES__ -I../src/include/ -include ../config-host.h -g -O3 -Wall -Wextra -Werror -Wno-unused-parameter -Wno-sign-compare -Wstringop-overflow=0 -Warray-bounds=0 -DLIBURING_BUILD_TEST -o napi-busy-poll-client.t napi-busy-poll-client.c helpers.o -L../src/ -luring -lpthread
   napi-busy-poll-client.c: In function ‘encodeUserData’:
   napi-busy-poll-client.c:119:16: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
     119 |         return (void *)((uint32_t)fd | ((__u64)type << 56));
         |                ^
   cc1: all warnings being treated as errors

-- 
Ammar Faizi