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Message-ID: <202209120606.OZwzCcvk-lkp@intel.com>
Date: Mon, 12 Sep 2022 06:52:05 +0800
From: kernel test robot <lkp@...el.com>
To: Heiko Stuebner <heiko@...ech.de>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Palmer Dabbelt <palmer@...osinc.com>,
Samuel Holland <samuel@...lland.org>,
Guo Ren <guoren@...nel.org>
Subject: kernel/dma/pool.c:105:44: error: implicit declaration of function
'pgprot_dmacoherent'
Hi Heiko,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 80e78fcce86de0288793a0ef0f6acf37656ee4cf
commit: d20ec7529236a2fcdb2d856fc0bd80b409a217fc riscv: implement cache-management errata for T-Head SoCs
date: 6 weeks ago
config: riscv-randconfig-r036-20220912 (https://download.01.org/0day-ci/archive/20220912/202209120606.OZwzCcvk-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.1.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d20ec7529236a2fcdb2d856fc0bd80b409a217fc
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout d20ec7529236a2fcdb2d856fc0bd80b409a217fc
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash kernel/dma/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
kernel/dma/pool.c: In function 'atomic_pool_expand':
>> kernel/dma/pool.c:105:44: error: implicit declaration of function 'pgprot_dmacoherent' [-Werror=implicit-function-declaration]
105 | pgprot_dmacoherent(PAGE_KERNEL),
| ^~~~~~~~~~~~~~~~~~
>> kernel/dma/pool.c:105:44: error: incompatible type for argument 3 of 'dma_common_contiguous_remap'
105 | pgprot_dmacoherent(PAGE_KERNEL),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| int
In file included from kernel/dma/pool.c:8:
include/linux/dma-map-ops.h:235:76: note: expected 'pgprot_t' but argument is of type 'int'
235 | void *dma_common_contiguous_remap(struct page *page, size_t size, pgprot_t prot,
| ~~~~~~~~~^~~~
cc1: some warnings being treated as errors
vim +/pgprot_dmacoherent +105 kernel/dma/pool.c
d7e673ec2c8e0e Nicolas Saenz Julienne 2020-08-14 78
54adadf9b08571 David Rientjes 2020-04-20 79 static int atomic_pool_expand(struct gen_pool *pool, size_t pool_size,
54adadf9b08571 David Rientjes 2020-04-20 80 gfp_t gfp)
e860c299ac0d73 David Rientjes 2020-04-14 81 {
54adadf9b08571 David Rientjes 2020-04-20 82 unsigned int order;
892fc9f6835ecf Dan Carpenter 2020-08-26 83 struct page *page = NULL;
e860c299ac0d73 David Rientjes 2020-04-14 84 void *addr;
54adadf9b08571 David Rientjes 2020-04-20 85 int ret = -ENOMEM;
54adadf9b08571 David Rientjes 2020-04-20 86
54adadf9b08571 David Rientjes 2020-04-20 87 /* Cannot allocate larger than MAX_ORDER-1 */
54adadf9b08571 David Rientjes 2020-04-20 88 order = min(get_order(pool_size), MAX_ORDER-1);
54adadf9b08571 David Rientjes 2020-04-20 89
54adadf9b08571 David Rientjes 2020-04-20 90 do {
54adadf9b08571 David Rientjes 2020-04-20 91 pool_size = 1 << (PAGE_SHIFT + order);
d7e673ec2c8e0e Nicolas Saenz Julienne 2020-08-14 92 if (cma_in_zone(gfp))
d7e673ec2c8e0e Nicolas Saenz Julienne 2020-08-14 93 page = dma_alloc_from_contiguous(NULL, 1 << order,
d7e673ec2c8e0e Nicolas Saenz Julienne 2020-08-14 94 order, false);
d7e673ec2c8e0e Nicolas Saenz Julienne 2020-08-14 95 if (!page)
c84dc6e68a1d24 David Rientjes 2020-04-14 96 page = alloc_pages(gfp, order);
54adadf9b08571 David Rientjes 2020-04-20 97 } while (!page && order-- > 0);
e860c299ac0d73 David Rientjes 2020-04-14 98 if (!page)
e860c299ac0d73 David Rientjes 2020-04-14 99 goto out;
e860c299ac0d73 David Rientjes 2020-04-14 100
c84dc6e68a1d24 David Rientjes 2020-04-14 101 arch_dma_prep_coherent(page, pool_size);
e860c299ac0d73 David Rientjes 2020-04-14 102
76a19940bd62a8 David Rientjes 2020-04-14 103 #ifdef CONFIG_DMA_DIRECT_REMAP
c84dc6e68a1d24 David Rientjes 2020-04-14 104 addr = dma_common_contiguous_remap(page, pool_size,
e860c299ac0d73 David Rientjes 2020-04-14 @105 pgprot_dmacoherent(PAGE_KERNEL),
e860c299ac0d73 David Rientjes 2020-04-14 106 __builtin_return_address(0));
e860c299ac0d73 David Rientjes 2020-04-14 107 if (!addr)
54adadf9b08571 David Rientjes 2020-04-20 108 goto free_page;
76a19940bd62a8 David Rientjes 2020-04-14 109 #else
76a19940bd62a8 David Rientjes 2020-04-14 110 addr = page_to_virt(page);
76a19940bd62a8 David Rientjes 2020-04-14 111 #endif
76a19940bd62a8 David Rientjes 2020-04-14 112 /*
76a19940bd62a8 David Rientjes 2020-04-14 113 * Memory in the atomic DMA pools must be unencrypted, the pools do not
2f5388a29be82a Christoph Hellwig 2020-08-17 114 * shrink so no re-encryption occurs in dma_direct_free().
76a19940bd62a8 David Rientjes 2020-04-14 115 */
76a19940bd62a8 David Rientjes 2020-04-14 116 ret = set_memory_decrypted((unsigned long)page_to_virt(page),
76a19940bd62a8 David Rientjes 2020-04-14 117 1 << order);
76a19940bd62a8 David Rientjes 2020-04-14 118 if (ret)
76a19940bd62a8 David Rientjes 2020-04-14 119 goto remove_mapping;
54adadf9b08571 David Rientjes 2020-04-20 120 ret = gen_pool_add_virt(pool, (unsigned long)addr, page_to_phys(page),
54adadf9b08571 David Rientjes 2020-04-20 121 pool_size, NUMA_NO_NODE);
e860c299ac0d73 David Rientjes 2020-04-14 122 if (ret)
76a19940bd62a8 David Rientjes 2020-04-14 123 goto encrypt_mapping;
e860c299ac0d73 David Rientjes 2020-04-14 124
2edc5bb3c5cc42 David Rientjes 2020-04-14 125 dma_atomic_pool_size_add(gfp, pool_size);
e860c299ac0d73 David Rientjes 2020-04-14 126 return 0;
e860c299ac0d73 David Rientjes 2020-04-14 127
76a19940bd62a8 David Rientjes 2020-04-14 128 encrypt_mapping:
76a19940bd62a8 David Rientjes 2020-04-14 129 ret = set_memory_encrypted((unsigned long)page_to_virt(page),
76a19940bd62a8 David Rientjes 2020-04-14 130 1 << order);
76a19940bd62a8 David Rientjes 2020-04-14 131 if (WARN_ON_ONCE(ret)) {
76a19940bd62a8 David Rientjes 2020-04-14 132 /* Decrypt succeeded but encrypt failed, purposely leak */
76a19940bd62a8 David Rientjes 2020-04-14 133 goto out;
76a19940bd62a8 David Rientjes 2020-04-14 134 }
e860c299ac0d73 David Rientjes 2020-04-14 135 remove_mapping:
76a19940bd62a8 David Rientjes 2020-04-14 136 #ifdef CONFIG_DMA_DIRECT_REMAP
c84dc6e68a1d24 David Rientjes 2020-04-14 137 dma_common_free_remap(addr, pool_size);
76a19940bd62a8 David Rientjes 2020-04-14 138 #endif
76a19940bd62a8 David Rientjes 2020-04-14 139 free_page: __maybe_unused
c84dc6e68a1d24 David Rientjes 2020-04-14 140 __free_pages(page, order);
e860c299ac0d73 David Rientjes 2020-04-14 141 out:
54adadf9b08571 David Rientjes 2020-04-20 142 return ret;
54adadf9b08571 David Rientjes 2020-04-20 143 }
54adadf9b08571 David Rientjes 2020-04-20 144
:::::: The code at line 105 was first introduced by commit
:::::: e860c299ac0d738b44ff91693f11e63080a29698 dma-remap: separate DMA atomic pools from direct remap code
:::::: TO: David Rientjes <rientjes@...gle.com>
:::::: CC: Christoph Hellwig <hch@....de>
--
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https://01.org/lkp
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