In the file `xen/drivers/passthrough/arm/smmu-v3.c' there are a few occurrences
of nested '//' character sequences inside C-style comment blocks, which violate
Rule 3.1.
The patch aims to resolve those by replacing the nested comments with
equivalent constructs that do not violate the rule.
Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Acked-by: Rahul Singh <rahul.singh@arm.com>
Reviewed-by: Luca Fancellu <luca.fancellu@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Redefine BUILD_BUG_ON_ZERO to avoid using a compiler extension
that gives an acceptable semantics to C99 undefined behavior 58
("A structure or union is defined as containing no named members
(6.7.2.1)").
The first definition includes an additional named field of type
char.
The chosen ill-formed construct for the second definition is a struct
with a named bitfield of width 0 when the condition is true,
which prevents the UB without using the compiler extension while keeping
the semantic of the construct.
The choice of the bitwise AND operation to bring the result to 0
when cond is false boils down to possibly better portability.
Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
In the files `xen/arch/arm/include/asm/arm(32|64)/flushtlb.h' there are a
few occurrences of nested '//' character sequences inside C-style comment
blocks, which violate Rule 3.1. The patch aims to resolve those by changing
the inner comments to arm asm comments, delimited by ';' instead.
Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Luca Fancellu <luca.fancellu@arm.com>
Nicola Vetrini