From: Catalin Marinas <catalin.marinas@arm.com>
Date: Mon, 28 Oct 2019 09:08:34 +0000 (+0000)
Subject: arm64: Silence clang warning on mismatched value/register sizes
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=27a22fbdeedd6c5c451cf5f830d51782bf50c3a2;p=openwrt%2Fstaging%2Fblogic.git

arm64: Silence clang warning on mismatched value/register sizes

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@gmail.com>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c
index c9fb02927d3e..3c18c2454089 100644
--- a/arch/arm64/kernel/sys_compat.c
+++ b/arch/arm64/kernel/sys_compat.c
@@ -37,7 +37,7 @@ __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);
 		}