From: Catalin Marinas <catalin.marinas@xxxxxxx>
[ Upstream commit: 27a22fbdeedd6c5c451cf5f830d51782bf50c3a2 ]
Clang reports a warning on the __tlbi(aside1is, 0) macro expansion since
the value size does not match the register size specified in the inline
asm. Construct the ASID value using the __TLBI_VADDR() macro.
Fixes: 222fc0c8503d ("arm64: compat: Workaround Neoverse-N1 #1542419 for compat user-space")
Reported-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
Cc: James Morse <james.morse@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: James Morse <james.morse@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/arm64/kernel/sys_compat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c
index 5a9b220aef6cf..3ef9d0a3ac1dc 100644
--- a/arch/arm64/kernel/sys_compat.c
+++ b/arch/arm64/kernel/sys_compat.c
@@ -48,7 +48,7 @@ __do_compat_cache_op(unsigned long start, unsigned long end)
* The workaround requires an inner-shareable tlbi.
* We pick the reserved-ASID to minimise the impact.
*/
- __tlbi(aside1is, 0);
+ __tlbi(aside1is, __TLBI_VADDR(0, 0));
dsb(ish);
}
--
2.20.1
