From: Petr Vorel <pvorel@suse.cz>
To: Andrea Cervesato <andrea.cervesato@suse.de>
Cc: Linux Test Project <ltp@lists.linux.it>
Subject: Re: [LTP] [PATCH 2/3] mmap23: add test for MAP_32BIT oversized mapping
Date: Fri, 11 Sep 2026 16:08:38 +0200 [thread overview]
Message-ID: <20260911140838.GD1488703@pevik> (raw)
In-Reply-To: <20260828-mmap_32bit_coverage-v1-2-7f0b8b589773@suse.com>
Hi Andrea,
Obviously correct.
Reviewed-by: Petr Vorel <pvorel@suse.cz>
...
> +++ b/testcases/kernel/syscalls/mmap/mmap23.c
...
> +/*\
> + * Verify that :manpage:`mmap(2)` with the MAP_32BIT flag fails with ENOMEM
> + * when requesting a mapping of size >= 2GB, since it cannot fit within the
> + * first 2GB of address space.
> + *
> + * MAP_32BIT is supported only on x86-64 for 64-bit programs.
> + */
> +
> +#include "tst_test.h"
> +#include "lapi/mmap.h"
> +
> +#define MAP_SZ (2UL * TST_GB)
Interesting enough, it works on 1GB as well:
#define MAP_SZ (1UL * TST_GB)
Actually the minimum working memory on my system is 1001 MB (1001UL * TST_MB)
Kind regards,
Petr
--
Mailing list info: https://lists.linux.it/listinfo/ltp
next prev parent reply other threads:[~2026-09-11 14:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-28 15:36 [LTP] [PATCH 0/3] mmap testing suite to cover MAP_32BIT Andrea Cervesato
2026-08-28 15:36 ` [LTP] [PATCH 1/3] lapi/mmap: add MAP_32BIT fallback Andrea Cervesato
2026-08-28 21:10 ` [LTP] " linuxtestproject.agent
2026-08-31 8:02 ` Andrea Cervesato via ltp
2026-09-11 13:20 ` [LTP] [PATCH 1/3] " Petr Vorel
2026-09-11 13:26 ` Petr Vorel
2026-08-28 15:36 ` [LTP] [PATCH 2/3] mmap23: add test for MAP_32BIT oversized mapping Andrea Cervesato
2026-09-11 14:08 ` Petr Vorel [this message]
2026-08-28 15:36 ` [LTP] [PATCH 3/3] mmap24: add test for MAP_32BIT address limit Andrea Cervesato
2026-09-10 14:38 ` Cyril Hrubis
2026-09-11 13:59 ` Petr Vorel
2026-09-11 15:16 ` Andrea Cervesato via ltp
2026-09-11 16:03 ` Petr Vorel
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