diff options
| author | Dev Jain <[email protected]> | 2024-07-18 10:55:04 +0530 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-07-26 14:33:10 -0700 |
| commit | f556acc2facdd240de2c7416cd1da48a1dae70ec (patch) | |
| tree | e303968ecbef5e43576692884f4b8adc64d3e399 | |
| parent | 66eca1021a42856d6af2a9802c99e160278aed91 (diff) | |
selftests/mm: skip test for non-LPA2 and non-LVA systems
Post my improvement of the test in e4a4ba415419 ("selftests/mm:
va_high_addr_switch: dynamically initialize testcases to enable LPA2
testing"):
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.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: e4a4ba415419 ("selftests/mm: va_high_addr_switch: dynamically initialize testcases to enable LPA2 testing")
Signed-off-by: Dev Jain <[email protected]>
Reviewed-by: Ryan Roberts <[email protected]>
Cc: Anshuman Khandual <[email protected]>
Cc: Mark Brown <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | tools/testing/selftests/mm/va_high_addr_switch.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/tools/testing/selftests/mm/va_high_addr_switch.c b/tools/testing/selftests/mm/va_high_addr_switch.c index fa7eabfaf841..896b3f73fc53 100644 --- a/tools/testing/selftests/mm/va_high_addr_switch.c +++ b/tools/testing/selftests/mm/va_high_addr_switch.c @@ -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 |