Re: [PATCH] arm[64]/memremap: don't abuse pfn_valid() to ensure presence of linear map
From: kernel test robot
Date: Sun Apr 24 2022 - 16:15:29 EST
Hi Mike,
I love your patch! Yet something to improve:
[auto build test ERROR on b2d229d4ddb17db541098b83524d901257e93845]
url: https://github.com/intel-lab-lkp/linux/commits/Mike-Rapoport/arm-64-memremap-don-t-abuse-pfn_valid-to-ensure-presence-of-linear-map/20220425-012242
base: b2d229d4ddb17db541098b83524d901257e93845
config: arm-randconfig-c002-20220424 (https://download.01.org/0day-ci/archive/20220425/202204250425.OjOiS0ZK-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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/635763878be30ab45f350cdcffba3d8e71089942
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Mike-Rapoport/arm-64-memremap-don-t-abuse-pfn_valid-to-ensure-presence-of-linear-map/20220425-012242
git checkout 635763878be30ab45f350cdcffba3d8e71089942
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
arm-linux-gnueabi-ld: kernel/iomem.o: in function `try_ram_remap':
>> kernel/iomem.c:37: undefined reference to `arch_memremap_can_ram_remap'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_i2c_remove':
drivers/gpu/drm/bridge/ite-it6505.c:3317: undefined reference to `drm_dp_aux_unregister'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_get_dpcd':
drivers/gpu/drm/bridge/ite-it6505.c:602: undefined reference to `drm_dp_dpcd_read'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_bridge_attach':
drivers/gpu/drm/bridge/ite-it6505.c:2858: undefined reference to `drm_dp_aux_register'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `drm_dp_dpcd_writeb':
include/drm/dp/drm_dp_helper.h:2088: undefined reference to `drm_dp_dpcd_write'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `drm_dp_dpcd_readb':
include/drm/dp/drm_dp_helper.h:2073: undefined reference to `drm_dp_dpcd_read'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_hdcp_work':
drivers/gpu/drm/bridge/ite-it6505.c:2084: undefined reference to `drm_dp_dpcd_read_link_status'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:2088: undefined reference to `drm_dp_channel_eq_ok'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_step_cr_train':
drivers/gpu/drm/bridge/ite-it6505.c:1688: undefined reference to `drm_dp_link_train_clock_recovery_delay'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1689: undefined reference to `drm_dp_dpcd_read_link_status'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1691: undefined reference to `drm_dp_clock_recovery_ok'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1704: undefined reference to `drm_dp_get_adjust_request_voltage'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1708: undefined reference to `drm_dp_get_adjust_request_pre_emphasis'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_step_eq_train':
drivers/gpu/drm/bridge/ite-it6505.c:1760: undefined reference to `drm_dp_link_train_channel_eq_delay'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1761: undefined reference to `drm_dp_dpcd_read_link_status'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1763: undefined reference to `drm_dp_clock_recovery_ok'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1766: undefined reference to `drm_dp_channel_eq_ok'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1777: undefined reference to `drm_dp_get_adjust_request_voltage'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:1781: undefined reference to `drm_dp_get_adjust_request_pre_emphasis'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_drm_dp_link_configure':
drivers/gpu/drm/bridge/ite-it6505.c:1603: undefined reference to `drm_dp_dpcd_write'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_parse_link_capabilities':
drivers/gpu/drm/bridge/ite-it6505.c:1457: undefined reference to `drm_dp_link_rate_to_bw_code'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_drm_dp_link_probe':
drivers/gpu/drm/bridge/ite-it6505.c:726: undefined reference to `drm_dp_dpcd_read'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:731: undefined reference to `drm_dp_bw_code_to_link_rate'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `drm_dp_dpcd_readb':
include/drm/dp/drm_dp_helper.h:2073: undefined reference to `drm_dp_dpcd_read'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `drm_dp_dpcd_writeb':
include/drm/dp/drm_dp_helper.h:2088: undefined reference to `drm_dp_dpcd_write'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_process_hpd_irq':
drivers/gpu/drm/bridge/ite-it6505.c:2293: undefined reference to `drm_dp_dpcd_read_link_status'
arm-linux-gnueabi-ld: drivers/gpu/drm/bridge/ite-it6505.c:2302: undefined reference to `drm_dp_channel_eq_ok'
vim +37 kernel/iomem.c
5981690ddb8f72 Dan Williams 2018-03-29 29
5981690ddb8f72 Dan Williams 2018-03-29 30 static void *try_ram_remap(resource_size_t offset, size_t size,
5981690ddb8f72 Dan Williams 2018-03-29 31 unsigned long flags)
5981690ddb8f72 Dan Williams 2018-03-29 32 {
5981690ddb8f72 Dan Williams 2018-03-29 33 unsigned long pfn = PHYS_PFN(offset);
5981690ddb8f72 Dan Williams 2018-03-29 34
5981690ddb8f72 Dan Williams 2018-03-29 35 /* In the simple case just return the existing linear address */
635763878be30a Mike Rapoport 2022-04-24 36 if (!PageHighMem(pfn_to_page(pfn)) &&
5981690ddb8f72 Dan Williams 2018-03-29 @37 arch_memremap_can_ram_remap(offset, size, flags))
5981690ddb8f72 Dan Williams 2018-03-29 38 return __va(offset);
5981690ddb8f72 Dan Williams 2018-03-29 39
5981690ddb8f72 Dan Williams 2018-03-29 40 return NULL; /* fallback to arch_memremap_wb */
5981690ddb8f72 Dan Williams 2018-03-29 41 }
5981690ddb8f72 Dan Williams 2018-03-29 42
--
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https://01.org/lkp