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linux/drivers/cxl
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Nathan Chancellor be185c2988 cxl/core: Remove cxld_const_init in cxl_decoder_alloc() 
Commit 48667f6761 ("cxl/core: Split decoder setup into alloc + add")
aimed to fix a large stack frame warning but from v5 to v6, it
introduced a new instance of the warning due to allocating
cxld_const_init on the stack, which was done due to the use of const on
the nr_target member of the cxl_decoder struct. With ARCH=arm
allmodconfig minus CONFIG_KASAN:

GCC 11.2.0:

drivers/cxl/core/bus.c: In function ‘cxl_decoder_alloc’:
drivers/cxl/core/bus.c:523:1: error: the frame size of 1032 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
  523 | }
      | ^
cc1: all warnings being treated as errors

Clang 12.0.1:

drivers/cxl/core/bus.c:486:21: error: stack frame size of 1056 bytes in function 'cxl_decoder_alloc' [-Werror,-Wframe-larger-than=]
struct cxl_decoder *cxl_decoder_alloc(struct cxl_port *port, int nr_targets)
                    ^
1 error generated.

Revert that part of the change, which makes the stack frame of
cxl_decoder_alloc() much more reasonable.

Fixes: 48667f6761 ("cxl/core: Split decoder setup into alloc + add")
Link: https://github.com/ClangBuiltLinux/linux/issues/1539
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20211210213627.2477370-1-nathan@kernel.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2022-01-04 17:29:31 -08:00
..
core cxl/core: Remove cxld_const_init in cxl_decoder_alloc() 2022-01-04 17:29:31 -08:00
acpi.c ACPI: NUMA: Add a node and memblk for each CFMWS not in SRAT 2021-11-15 11:03:00 -08:00
cxl.h cxl/core: Remove cxld_const_init in cxl_decoder_alloc() 2022-01-04 17:29:31 -08:00
cxlmem.h cxl/memdev: Remove unused cxlmd field 2021-11-15 11:02:59 -08:00
Kconfig cxl/acpi: Convert CFMWS parsing to ACPI sub-table helpers 2021-11-15 11:02:59 -08:00
Makefile cxl: Move cxl_core to new directory 2021-08-06 08:22:53 -07:00
pci.c cxl/memdev: Change cxl_mem to a more descriptive name 2021-11-15 11:02:58 -08:00
pci.h cxl/pci: Convert register block identifiers to an enum 2021-10-29 11:53:51 -07:00
pmem.c cxl/pmem: Fix module reload vs workqueue state 2021-11-15 11:03:00 -08:00