Re: [PATCH] arm64: smccc: Add trace events to SMC calls.

From: kernel test robot
Date: Sat Mar 04 2023 - 12:39:12 EST

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In reply to: Rakesh Babu Saladi: "[PATCH] arm64: smccc: Add trace events to SMC calls."
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Hi Rakesh,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/timers/core]
[also build test ERROR on arm/for-next arm/fixes arm64/for-next/core kvmarm/next soc/for-next xilinx-xlnx/master linus/master v6.2 next-20230303]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Rakesh-Babu-Saladi/arm64-smccc-Add-trace-events-to-SMC-calls/20230304-210103
patch link: https://lore.kernel.org/r/20230304125850.32687-1-rsaladi2%40marvell.com
patch subject: [PATCH] arm64: smccc: Add trace events to SMC calls.
config: m68k-randconfig-r032-20230302 (https://download.01.org/0day-ci/archive/20230305/202303050135.zEqZYkVJ-lkp@xxxxxxxxx/config)
compiler: m68k-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://github.com/intel-lab-lkp/linux/commit/ebdc6e981b26c56978d65ad39d650fd2a7862d1a
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Rakesh-Babu-Saladi/arm64-smccc-Add-trace-events-to-SMC-calls/20230304-210103
git checkout ebdc6e981b26c56978d65ad39d650fd2a7862d1a
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303050135.zEqZYkVJ-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

m68k-linux-ld: section .rodata VMA [0000000000002000,000000000039d947] overlaps section .text VMA [0000000000000400,0000000000876c3f]
m68k-linux-ld: drivers/firmware/qcom_scm-legacy.o: in function `scm_legacy_call':
>> drivers/firmware/qcom_scm-legacy.c:176: undefined reference to `arm_smccc_smc'
m68k-linux-ld: drivers/firmware/qcom_scm-legacy.o: in function `scm_legacy_call_atomic':
drivers/firmware/qcom_scm-legacy.c:234: undefined reference to `arm_smccc_smc'

vim +176 drivers/firmware/qcom_scm-legacy.c

b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 119
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 120 /**
e1cd92da0b3321 drivers/firmware/qcom_scm-legacy.c Stephen Boyd 2021-02-23 121 * scm_legacy_call() - Sends a command to the SCM and waits for the command to
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 122 * finish processing.
ebf21bbc2ff56a drivers/firmware/qcom_scm-legacy.c Krzysztof Kozlowski 2022-05-19 123 * @dev: device
ebf21bbc2ff56a drivers/firmware/qcom_scm-legacy.c Krzysztof Kozlowski 2022-05-19 124 * @desc: descriptor structure containing arguments and return values
ebf21bbc2ff56a drivers/firmware/qcom_scm-legacy.c Krzysztof Kozlowski 2022-05-19 125 * @res: results from SMC call
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 126 *
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 127 * A note on cache maintenance:
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 128 * Note that any buffers that are expected to be accessed by the secure world
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 129 * must be flushed before invoking qcom_scm_call and invalidated in the cache
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 130 * immediately after qcom_scm_call returns. Cache maintenance on the command
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 131 * and response buffers is taken care of by qcom_scm_call; however, callers are
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 132 * responsible for any other cached buffers passed over to the secure world.
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 133 */
9a434cee773ae1 drivers/firmware/qcom_scm-legacy.c Elliot Berman 2020-01-07 134 int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 135 struct qcom_scm_res *res)
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 136 {
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 137 u8 arglen = desc->arginfo & 0xf;
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 138 int ret = 0, context_id;
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 139 unsigned int i;
e0aa153965041c drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 140 struct scm_legacy_command *cmd;
e0aa153965041c drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 141 struct scm_legacy_response *rsp;
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 142 struct arm_smccc_args smc = {0};
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 143 struct arm_smccc_res smc_res;
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 144 const size_t cmd_len = arglen * sizeof(__le32);
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 145 const size_t resp_len = MAX_QCOM_SCM_RETS * sizeof(__le32);
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 146 size_t alloc_len = sizeof(*cmd) + cmd_len + sizeof(*rsp) + resp_len;
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 147 dma_addr_t cmd_phys;
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 148 __le32 *arg_buf;
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 149 const __le32 *res_buf;
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 150
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 151 cmd = kzalloc(PAGE_ALIGN(alloc_len), GFP_KERNEL);
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 152 if (!cmd)
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 153 return -ENOMEM;
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 154
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 155 cmd->len = cpu_to_le32(alloc_len);
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 156 cmd->buf_offset = cpu_to_le32(sizeof(*cmd));
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 157 cmd->resp_hdr_offset = cpu_to_le32(sizeof(*cmd) + cmd_len);
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 158 cmd->id = cpu_to_le32(SCM_LEGACY_FNID(desc->svc, desc->cmd));
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 159
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 160 arg_buf = scm_legacy_get_command_buffer(cmd);
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 161 for (i = 0; i < arglen; i++)
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 162 arg_buf[i] = cpu_to_le32(desc->args[i]);
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 163
e0aa153965041c drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 164 rsp = scm_legacy_command_to_response(cmd);
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 165
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 166 cmd_phys = dma_map_single(dev, cmd, alloc_len, DMA_TO_DEVICE);
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 167 if (dma_mapping_error(dev, cmd_phys)) {
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 168 kfree(cmd);
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 169 return -ENOMEM;
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 170 }
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 171
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 172 smc.args[0] = 1;
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 173 smc.args[1] = (unsigned long)&context_id;
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 174 smc.args[2] = cmd_phys;
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 175
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 @176 mutex_lock(&qcom_scm_lock);
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 177 __scm_legacy_do(&smc, &smc_res);
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 178 if (smc_res.a0)
590e92809a58a5 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 179 ret = qcom_scm_remap_error(smc_res.a0);
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 180 mutex_unlock(&qcom_scm_lock);
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 181 if (ret)
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 182 goto out;
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 183
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 184 do {
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 185 dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len,
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 186 sizeof(*rsp), DMA_FROM_DEVICE);
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 187 } while (!rsp->is_complete);
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 188
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 189 dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len +
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 190 le32_to_cpu(rsp->buf_offset),
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 191 resp_len, DMA_FROM_DEVICE);
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 192
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 193 if (res) {
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 194 res_buf = scm_legacy_get_response_buffer(rsp);
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 195 for (i = 0; i < MAX_QCOM_SCM_RETS; i++)
efd2b15c21a043 drivers/firmware/qcom_scm-32.c Elliot Berman 2020-01-07 196 res->result[i] = le32_to_cpu(res_buf[i]);
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 197 }
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 198 out:
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 199 dma_unmap_single(dev, cmd_phys, alloc_len, DMA_TO_DEVICE);
16e59467a44651 drivers/firmware/qcom_scm-32.c Andy Gross 2016-06-03 200 kfree(cmd);
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 201 return ret;
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 202 }
b6a1dfbc7d5740 drivers/firmware/qcom_scm-32.c Kumar Gala 2015-03-11 203

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https://github.com/intel/lkp-tests

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In reply to: Rakesh Babu Saladi: "[PATCH] arm64: smccc: Add trace events to SMC calls."
Next in thread: kernel test robot: "Re: [PATCH] arm64: smccc: Add trace events to SMC calls."
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