[PATCH] tools: testing: fix phys_addr_t size on 64-bit systems

[Lorenzo Stoakes]

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.

Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
---
 tools/testing/shared/shared.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/shared/shared.mk b/tools/testing/shared/shared.mk
index a6bc51d0b0bf..b37362224a73 100644
--- a/tools/testing/shared/shared.mk
+++ b/tools/testing/shared/shared.mk
@@ -69,6 +69,7 @@ generated/bit-length.h: FORCE
 	@if ! grep -qws CONFIG_$(LONG_BIT)BIT generated/bit-length.h; then   \
 		echo "Generating $@";                                        \
 		echo "#define CONFIG_$(LONG_BIT)BIT 1" > $@;                 \
+		echo "#define CONFIG_PHYS_ADDR_T_$(LONG_BIT)BIT 1" > $@;     \
 	fi
 
 FORCE: ;
-- 
2.46.2