Thread (106 messages) 106 messages, 18 authors, 2019-12-05
STALE2386d REVIEWED: 3 (3M)
Revisions (6)
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[PATCH v7 09/25] lib: vdso: Add compat support

From: Vincenzo Frascino <vincenzo.frascino@arm.com>
Date: 2019-06-21 09:53:36
Also in: linux-arch, linux-kselftest, linux-mips, lkml
Subsystem: generic vdso library, library code, the rest · Maintainers: Andy Lutomirski, Thomas Gleixner, Vincenzo Frascino, Andrew Morton, Linus Torvalds

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

Add support to the generic code for compat fallback functions.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <redacted>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Tested-by: Shijith Thotton <sthotton@marvell.com>
Tested-by: Andre Przywara <andre.przywara@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 473e2dda0220..fc43f457ed2c 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -21,7 +21,11 @@
  * - 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 */
 
 static int do_hres(const struct vdso_data *vd,
 		   clockid_t clk,
-- 
2.21.0


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