From: Deepa Dinamani <deepa.kernel@gmail.com>
To: arnd@arndb.de, tglx@linutronix.de, john.stultz@linaro.org
Cc: linux-kernel@vger.kernel.org, y2038@lists.linaro.org
Subject: [PATCH v5 05/10] arch: Introduce CONFIG_COMPAT_32BIT_TIME
Date: Tue, 13 Mar 2018 21:03:28 -0700 [thread overview]
Message-ID: <20180314040333.3291-6-deepa.kernel@gmail.com> (raw)
In-Reply-To: <20180314040333.3291-1-deepa.kernel@gmail.com>
Compat functions are now used to support 32 bit time_t in
compat mode on 64 bit architectures and in native mode on
32 bit architectures.
Introduce COMPAT_32BIT_TIME to conditionally compile these
functions.
Note that turning off 32 bit time_t support requires more
changes on architecture side. For instance, architecure
syscall tables need to be updated to drop support for 32 bit
time_t syscalls.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
---
arch/Kconfig | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/Kconfig b/arch/Kconfig
index 16e6acfe8711..4377b0cec976 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -878,6 +878,13 @@ config 64BIT_TIME
architectures, and 64-bit architectures as part of compat syscall
handling.
+config COMPAT_32BIT_TIME
+ def_bool (!64BIT && 64BIT_TIME) || COMPAT
+ help
+ This enables 32 bit time_t support in addition to 64 bit time_t support.
+ This is relevant on all 32-bit architectures, and 64-bit architectures
+ as part of compat syscall handling.
+
config ARCH_NO_COHERENT_DMA_MMAP
bool
--
2.14.1
next prev parent reply other threads:[~2018-03-14 4:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-14 4:03 [PATCH v5 00/10] posix_clocks: Prepare syscalls for 64 bit time_t conversion Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 01/10] compat: Make compat helpers independent of CONFIG_COMPAT Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 02/10] include: Move compat_timespec/ timeval to compat_time.h Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 03/10] compat: enable compat_get/put_timespec64 always Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 04/10] arch: introduce CONFIG_64BIT_TIME Deepa Dinamani
2018-03-14 4:03 ` Deepa Dinamani [this message]
2018-03-14 4:03 ` [PATCH v5 06/10] posix-clocks: Make compat syscalls depend on CONFIG_COMPAT_32BIT_TIME Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 07/10] include: Add new y2038 safe __kernel_timespec Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 08/10] fix get_timespec64() for y2038 safe compat interfaces Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 09/10] change time types to new y2038 safe __kernel_* types Deepa Dinamani
2018-03-14 4:03 ` [PATCH v5 10/10] nanosleep: change time types to " Deepa Dinamani
2018-03-14 16:12 ` [PATCH v5 00/10] posix_clocks: Prepare syscalls for 64 bit time_t conversion Arnd Bergmann
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