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From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>, Arnd Bergmann <arnd@arndb.de>,
	Russell King <linux@armlinux.org.uk>,
	Ralf Baechle <ralf@linux-mips.org>,
	Paul Burton <paul.burton@mips.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Mark Salyzyn <salyzyn@android.com>,
	Peter Collingbourne <pcc@google.com>
Subject: [PATCH v3 12/24] lib: vdso: Add compat support
Date: Thu, 13 Dec 2018 16:57:34 +0000	[thread overview]
Message-ID: <20181213165746.56930-13-vincenzo.frascino@arm.com> (raw)
Message-ID: <20181213165734.t6VaEXCw0qH5FbN5g8r2TEzDJ0FWWDUKePDnNH6-Bow@z> (raw)
In-Reply-To: <20181213165746.56930-1-vincenzo.frascino@arm.com>

Some 64 bit architectures have support for 32 bit applications that
require a separate version of the vDSOs.

This patch adds support to the generic code for compat fallback
functions.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 lib/vdso/gettimeofday.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index 30010d25bf5b..e21bd58139c8 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -28,7 +28,11 @@
  * - clock_gettime_fallback(): fallback for clock_gettime.
  * - clock_getres_fallback(): fallback for clock_getres.
  */
+#ifdef ENABLE_COMPAT_VDSO
+#include <asm/vdso/compat_gettimeofday.h>
+#else
 #include <asm/vdso/gettimeofday.h>
+#endif /* ENABLE_COMPAT_VDSO */
 
 #ifdef CONFIG_HAVE_HW_COUNTER
 static notrace int do_hres(const struct vdso_data *vd,
-- 
2.19.2

  parent reply	other threads:[~2018-12-13 16:59 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-13 16:57 [PATCH v3 00/24] Unify vDSOs across more architectures Vincenzo Frascino
2018-12-13 16:57 ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 01/24] kernel: Standardize vdso_datapage Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 02/24] kernel: Define gettimeofday vdso common code Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-14 18:15   ` Mark Salyzyn
2018-12-14 18:15     ` Mark Salyzyn
2019-01-10 10:36     ` Vincenzo Frascino
2019-01-10 10:36       ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 03/24] arm64: Build vDSO with -ffixed-x18 Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 04/24] arm64: Substitute gettimeofday with C implementation Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 05/24] arm64: compat: Alloc separate pages for vectors and sigpage Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 06/24] arm64: compat: Split kuser32 Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 07/24] arm64: compat: Refactor aarch32_alloc_vdso_pages() Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 08/24] arm64: compat: Add KUSER_HELPERS config option Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 09/24] arm64: compat: Add missing syscall numbers Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 10/24] arm64: compat: Expose signal related structures Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 11/24] arm64: compat: Generate asm offsets for signals Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` Vincenzo Frascino [this message]
2018-12-13 16:57   ` [PATCH v3 12/24] lib: vdso: Add compat support Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 13/24] arm64: compat: Add vDSO Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 14/24] arm64: Refactor vDSO code Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 15/24] arm64: compat: vDSO setup for compat layer Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 16/24] arm64: elf: vDSO code page discovery Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 17/24] arm64: compat: Get sigreturn trampolines from vDSO Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 18/24] arm64: Add vDSO compat support Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-17 15:26   ` Mark Salyzyn
2018-12-17 15:26     ` Mark Salyzyn
2019-01-10 10:39     ` Vincenzo Frascino
2019-01-10 10:39       ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 19/24] arm64: Enable compat vDSO support Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 20/24] arm: Add support for generic vDSO Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 21/24] mips: Introduce vdso_direct Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 22/24] clock: csrc-4k: Add support for vdso_direct Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 23/24] clock: gic-timer: " Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino
2018-12-13 16:57 ` [PATCH v3 24/24] mips: Add support for generic vDSO Vincenzo Frascino
2018-12-13 16:57   ` Vincenzo Frascino

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