MISRA C Rule 20.7 states: "Expressions resulting from the expansion
of macro parameters shall be enclosed in parentheses". Therefore, some
macro definitions should gain additional parentheses to ensure that all
current and future users will be safe with respect to expansions that
can possibly alter the semantics of the passed-in macro parameter.

No functional change.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
---
 xen/arch/x86/cpu/vpmu_amd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/cpu/vpmu_amd.c b/xen/arch/x86/cpu/vpmu_amd.c
index db2fa420e14a..97e6315bd9f7 100644
--- a/xen/arch/x86/cpu/vpmu_amd.c
+++ b/xen/arch/x86/cpu/vpmu_amd.c
@@ -25,8 +25,8 @@
 
 #define is_guest_mode(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
 #define is_pmu_enabled(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_EN_SHIFT))
-#define set_guest_mode(msr) (msr |= (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
-#define is_overflowed(msr) (!((msr) & (1ULL << (MSR_F10H_COUNTER_LENGTH-1))))
+#define set_guest_mode(msr) ((msr) |= (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
+#define is_overflowed(msr) (!((msr) & (1ULL << (MSR_F10H_COUNTER_LENGTH - 1))))
 
 static unsigned int __read_mostly num_counters;
 static const u32 __read_mostly *counters;
-- 
2.34.1

On Wed, 15 May 2024, Nicola Vetrini wrote:
> MISRA C Rule 20.7 states: "Expressions resulting from the expansion
> of macro parameters shall be enclosed in parentheses". Therefore, some
> macro definitions should gain additional parentheses to ensure that all
> current and future users will be safe with respect to expansions that
> can possibly alter the semantics of the passed-in macro parameter.
> 
> No functional change.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>

Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

> ---
>  xen/arch/x86/cpu/vpmu_amd.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/xen/arch/x86/cpu/vpmu_amd.c b/xen/arch/x86/cpu/vpmu_amd.c
> index db2fa420e14a..97e6315bd9f7 100644
> --- a/xen/arch/x86/cpu/vpmu_amd.c
> +++ b/xen/arch/x86/cpu/vpmu_amd.c
> @@ -25,8 +25,8 @@
>  
>  #define is_guest_mode(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
>  #define is_pmu_enabled(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_EN_SHIFT))
> -#define set_guest_mode(msr) (msr |= (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
> -#define is_overflowed(msr) (!((msr) & (1ULL << (MSR_F10H_COUNTER_LENGTH-1))))
> +#define set_guest_mode(msr) ((msr) |= (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
> +#define is_overflowed(msr) (!((msr) & (1ULL << (MSR_F10H_COUNTER_LENGTH - 1))))

is_overflowed is just a cosmetic change

On 16.05.2024 01:17, Stefano Stabellini wrote:
> On Wed, 15 May 2024, Nicola Vetrini wrote:
>> MISRA C Rule 20.7 states: "Expressions resulting from the expansion
>> of macro parameters shall be enclosed in parentheses". Therefore, some
>> macro definitions should gain additional parentheses to ensure that all
>> current and future users will be safe with respect to expansions that
>> can possibly alter the semantics of the passed-in macro parameter.
>>
>> No functional change.
>>
>> Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
> 
> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

Acked-by: Jan Beulich <jbeulich@suse.com>