selftests/mm: Skip test for non-LPA2 and non-LVA systems
Subsystems (3)
PATCH v2 1/1 selftests/mm: Skip test for non-LPA2 and non-LVA systems
Post my improvement of the test:
https://lore.kernel.org/all/[email protected]/
The test begins to fail on 4k and 16k pages, on non-LPA2 systems. To reduce noise in the CI systems, let us skip the test when higher address space is not implemented.
v1->v2:
- Guard with ifdeffery to prevent compiler warning on other arches
Signed-off-by Dev Jain <[email protected]>
Reviewed-by Ryan Roberts <[email protected]>
---
The patch applies on linux-next.
tools/testing/selftests/mm/va_high_addr_switch.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
tools/testing/selftests/mm/va_high_addr_switch.c +15 -1
@@ -293,6 +293,20 @@ static int run_test(struct testcase *test, int count)return ret; } +#ifdef __aarch64__ +/* Check if userspace VA > 48 bits */ +static int high_address_present (void ) +{ +void *ptr =mmap ((void *)(1UL <<50 ),1 ,PROT_READ |PROT_WRITE , +MAP_PRIVATE |MAP_ANONYMOUS |MAP_FIXED ,-1 ,0 ); +if (ptr ==MAP_FAILED ) +return 0 ; + +munmap (ptr,1 ); +return 1 ; +} +#endif +static int supported_arch (void ) {#if defined(__powerpc64__)
@@ -300,7 +314,7 @@ static int supported_arch(void)#elif defined(__x86_64__)return 1 ;#elif defined(__aarch64__) -return 1 ; +return high_address_present ();#else return 0 ;#endif
Signature · 1 line
2.34.1