From: Guenter Roeck <linux@roeck-us.net>
To: Anton Altaparmakov <anton@tuxera.com>
Cc: linux-ntfs-dev@lists.sourceforge.net,
linux-kernel@vger.kernel.org,
"David S . Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, Joel Stanley <joel@jms.id.au>,
Michael Ellerman <mpe@ellerman.id.au>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Linus Torvalds <torvalds@linux-foundation.org>,
Arnd Bergmann <arnd@arndb.de>, Guenter Roeck <linux@roeck-us.net>
Subject: [PATCH v3 1/3] arch: Add generic Kconfig option indicating page size smaller than 64k
Date: Sat, 27 Nov 2021 07:44:40 -0800 [thread overview]
Message-ID: <20211127154442.3676290-2-linux@roeck-us.net> (raw)
In-Reply-To: <20211127154442.3676290-1-linux@roeck-us.net>
NTFS_RW and VMXNET3 require a page size smaller than 64kB. Add generic
Kconfig option for use outside architecture code to avoid architecture
specific Kconfig options in that code.
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v3: Added patch: declare new configuration flag in generic code
arch/Kconfig | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/Kconfig b/arch/Kconfig
index 26b8ed11639d..d3c4ab249e9c 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -991,6 +991,16 @@ config HAVE_ARCH_COMPAT_MMAP_BASES
and vice-versa 32-bit applications to call 64-bit mmap().
Required for applications doing different bitness syscalls.
+config PAGE_SIZE_LESS_THAN_64KB
+ def_bool y
+ depends on !ARM64_64K_PAGES
+ depends on !IA64_PAGE_SIZE_64KB
+ depends on !PAGE_SIZE_64KB
+ depends on !PARISC_PAGE_SIZE_64KB
+ depends on !PPC_64K_PAGES
+ depends on !PPC_256K_PAGES
+ depends on !PAGE_SIZE_256KB
+
# This allows to use a set of generic functions to determine mmap base
# address by giving priority to top-down scheme only if the process
# is not in legacy mode (compat task, unlimited stack size or
--
2.33.0
next prev parent reply other threads:[~2021-11-27 15:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-27 15:44 [PATCH v3 0/3] Limit NTFS_RW to page sizes smaller than 64k Guenter Roeck
2021-11-27 15:44 ` Guenter Roeck [this message]
2021-11-27 15:44 ` [PATCH v3 2/3] fs: ntfs: " Guenter Roeck
2021-11-27 15:44 ` [PATCH v3 3/3] vmxnet3: Use generic Kconfig option for page size limit Guenter Roeck
2021-11-27 17:49 ` [PATCH v3 0/3] Limit NTFS_RW to page sizes smaller than 64k Linus Torvalds
2021-11-27 22:26 ` Guenter Roeck
2021-11-27 22:31 ` Linus Torvalds
2021-11-27 22:44 ` Anton Altaparmakov
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