Messages in this thread Patch in this message | | | Date | Wed, 2 Jan 2019 15:57:54 -0500 | From | "Michael S. Tsirkin" <> | Subject | [PATCH RFC 2/4] include/linux/compiler.h: allow memory operands |
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We don't really care whether the variable is in-register or in-memory. Relax the constraint accordingly.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- include/linux/compiler.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 1ad367b4cd8d..6601d39e8c48 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -154,7 +154,7 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, #ifndef OPTIMIZER_HIDE_VAR /* Make the optimizer believe the variable can be manipulated arbitrarily. */ #define OPTIMIZER_HIDE_VAR(var) \ - __asm__ ("" : "=r" (var) : "0" (var)) + __asm__ ("" : "=rm" (var) : "0" (var)) #endif /* Not-quite-unique ID. */ -- MST
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