tools: testing: fix phys_addr_t size on 64-bit systems

The phys_addr_t size is predicated on whether CONFIG_PHYS_ADDR_T_64BIT is
set or not.

In the VMA tests, virt_to_phys() from tools/include/linux casts a volatile
void * pointer to phys_addr_t, if CONFIG_PHYS_ADDR_T_64BIT is not set,
this will be 32-bit and trigger a warning.

Obviously this might also lead to truncation, which we would rather avoid.

Fix this by adjusting the generation of generated/bit-length.h to generate
a CONFIG_PHYS_ADDR_T{bits}BIT define.

This does result in the generation of the useless CONFIG_PHYS_ADDR_T_32BIT
define for 32-bit systems, but this should have no effect, and makes
implementation of this easier.

This resolves the issue and the warning.

[[email protected]: VMA tests not properly importing bit-length.h]
  Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Lorenzo Stoakes <[email protected]>
Tested-by: Liam R. Howlett <[email protected]>
Reviewed-by: Liam R. Howlett <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions