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From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Kees Cook <kees@kernel.org>,
	"Darrick J . Wong" <djwong@kernel.org>,
	linux-hardening@vger.kernel.org
Subject: Re: [PATCH 1/2] lib/cmdline_kunit: add test case for memparse()
Date: Thu, 22 Jan 2026 13:46:44 +0200	[thread overview]
Message-ID: <aXIOJEqV_ctVRrok@smile.fi.intel.com> (raw)
In-Reply-To: <20260122111254.1111811-2-dmantipov@yandex.ru>

On Thu, Jan 22, 2026 at 02:12:53PM +0300, Dmitry Antipov wrote:
> Better late than never, now there is a long-awaited basic
> test for 'memparse()' which is provided by cmdline.c.

Thank you for this! Really appreciate!

See a couple of nit-picks below.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
assuming they will be amended.

...

> +static const struct cmdline_test_memparse_entry testdata[] = {
> +	{ "0",			"",	0ULL },
> +	{ "1",			"",	1ULL },
> +	{ "a",			"a",	0ULL },
> +	{ "0xb",		"",	11ULL },
> +	{ "0xz",		"x",	0ULL },
> +	{ "1234",		"",	1234ULL },
> +	{ "04567",		"",	2423ULL },
> +	{ "0x9876",		"",	39030LL },
> +	{ "05678",		"8",	375ULL },
> +	{ "0xabcdefz",		"z",	11259375ULL },
> +	{ "0cdba",		"c",	0ULL },

> +	{ "4K",			"",	4096ULL },
> +	{ "0x10k@0xaaaabbbb",	"@",	16384ULL },
> +	{ "32M",		"",	33554432ULL },

These can utilize constants from sizes.h.

> +	{ "067m:foo",		":",	57671680ULL },

> +	{ "2G;bar=baz",		";",	2147483648ULL },

Ditto.

> +	{ "07gz",		"z",	7516192768ULL },
> +	{ "3T+data",		"+",	3298534883328ULL },

> +	{ "04t,ro",		",",	4398046511104ULL },

Ditto. (However I don't remember the maximum available there.)

> +	{ "012p",		"",	11258999068426240ULL },
> +	{ "7P,sync",		",",	7881299347898368ULL },
> +	{ "0x2e",		"",	46ULL },
> +	{ "2E and more",	" ",	2305843009213693952ULL },
> +	{ "18446744073709551615", "",	18446744073709551615ULL },

> +	{ "18446744073709551616", "",	0ULL }

Leave trailing comma as it's not a terminator.

Can we also have one with more than 20 decimal digits?

> +};

-- 
With Best Regards,
Andy Shevchenko



  reply	other threads:[~2026-01-22 11:46 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-22 11:12 [PATCH 0/2] minor lib/cmdline enhancements Dmitry Antipov
2026-01-22 11:12 ` [PATCH 1/2] lib/cmdline_kunit: add test case for memparse() Dmitry Antipov
2026-01-22 11:46   ` Andy Shevchenko [this message]
2026-01-22 15:00     ` Dmitry Antipov
2026-01-22 15:25       ` Andy Shevchenko
2026-01-22 11:12 ` [PATCH 2/2] lib/cmdline: adjust a few comments to fix kernel-doc -Wreturn warnings Dmitry Antipov
2026-01-22 11:40   ` Andy Shevchenko

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