From: David Laight <David.Laight@ACULAB.COM>
To: 'Masahiro Yamada' <masahiroy@kernel.org>,
Greg KH <gregkh@linuxfoundation.org>
Cc: Sasha Levin <sashal@kernel.org>,
Michal Marek <michal.lkml@markovi.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"stable@kernel.org" <stable@kernel.org>
Subject: RE: [PATCH] kbuild: give SUBLEVEL more room in KERNEL_VERSION
Date: Mon, 18 Jan 2021 22:54:38 +0000 [thread overview]
Message-ID: <42c0c7a2a3944eeaa868dd35dd5b6e81@AcuMS.aculab.com> (raw)
In-Reply-To: <CAK7LNAStfNj0hvotctFonezQKQSbJfxU1HrwzWmyDc0+68fQ4Q@mail.gmail.com>
From: Masahiro Yamada
> Sent: 18 January 2021 10:28
...
> It helps external modules to be compiled for multiple kernel versions.
>
> #if KERNEL_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
> code for the kernel versions older than 5.4.0
> #endif
I've just done a scan through some drivers.
The only checks with a non-zero sub-rev are for 2.6.nnn.
So provided KERNEL_VERSION_CODE is changed to match
nothing of ours breaks.
I've only found tests for the following:
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 28)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 34)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 17, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 0, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 7, 0)
#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 8, 0)
Although some seem to be against VERSION_CODE()
rather than KERNEL_VERSION().
David
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Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2021-01-18 22:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 1:49 [PATCH] kbuild: give SUBLEVEL more room in KERNEL_VERSION Sasha Levin
2021-01-18 9:21 ` Greg KH
2021-01-18 9:24 ` Greg KH
2021-01-18 13:39 ` Sasha Levin
2021-01-18 13:52 ` Greg KH
2021-01-18 15:31 ` Sasha Levin
2021-01-18 16:39 ` Greg KH
2021-01-18 10:27 ` Masahiro Yamada
2021-01-18 10:32 ` Greg KH
2021-01-18 22:54 ` David Laight [this message]
2021-01-18 13:38 ` Sasha Levin
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