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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: 222fc0c850 ("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>
alistair/sunxi64-5.5-dsi
Catalin Marinas 2019-10-28 09:08:34 +00:00
parent 222fc0c850
commit 27a22fbdee
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kernel/sys_compat.c
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@ -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);
}