Commit d12337 (rwsem: Remove redundant asmregparm annotation)
broke rwsem on UML.
As we cannot compile UML with -mregparm=3 and keeping asmregparm only
for UML is inadequate the easiest solution is using RWSEM_GENERIC_SPINLOCK.
Thanks to Thomas Gleixner for the idea.
Reported-by: Toralf Förster <toralf.foers...@gmx.de>
Tested-by: Toralf Förster <toralf.foers...@gmx.de>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: <sta...@kernel.org> # .39.x
Signed-off-by: Richard Weinberger <rich...@nod.at>
---
arch/um/Kconfig.x86 | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/um/Kconfig.x86 b/arch/um/Kconfig.x86
index a9da516..795ea8e 100644
--- a/arch/um/Kconfig.x86
+++ b/arch/um/Kconfig.x86
@@ -29,10 +29,10 @@ config X86_64
def_bool 64BIT
config RWSEM_XCHGADD_ALGORITHM
- def_bool X86_XADD
+ def_bool X86_XADD && 64BIT
config RWSEM_GENERIC_SPINLOCK
- def_bool !X86_XADD
+ def_bool !RWSEM_XCHGADD_ALGORITHM
config 3_LEVEL_PGTABLES
bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
--
1.7.4.2
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