x86/asm: Fix SETZ size enqcmds() build failure

[ Upstream commit d81ff5fe14a950f53e2833cfa196e7bb3fd5d4e3 ]

When building under GCC 4.9 and 5.5:

  arch/x86/include/asm/special_insns.h: Assembler messages:
  arch/x86/include/asm/special_insns.h:286: Error: operand size mismatch for `setz'

Change the type to "bool" for condition code arguments, as documented.

Fixes: 7f5933f81bd8 ("x86/asm: Add an enqcmds() wrapper for the ENQCMDS instruction")
Co-developed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210910223332.3224851-1-keescook@chromium.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h
index 0cf19684dd200e8697ebff4b62c6ce05a66b53fe..415693f5d909d6ea8a269bc53bca29b040075f38 100644 (file)
--- a/arch/x86/include/asm/special_insns.h
+++ b/arch/x86/include/asm/special_insns.h
@@ -287,7 +287,7 @@ static inline int enqcmds(void __iomem *dst, const void *src)
 {
        const struct { char _[64]; } *__src = src;
        struct { char _[64]; } __iomem *__dst = dst;
-       int zf;
+       bool zf;
 
        /*
         * ENQCMDS %(rdx), rax