diff mbox series

[XEN,v3,3/7] x86/vPMU: address violations of MISRA C Rule 20.7

Message ID b7d750f92da63893e9699e2924eb12d3efa251b2.1711700095.git.nicola.vetrini@bugseng.com (mailing list archive)
State Superseded
Headers show
Series address violations of MISRA C Rule 20.7 | expand

Commit Message

Nicola Vetrini March 29, 2024, 9:11 a.m. UTC
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/include/asm/vpmu.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Jan Beulich April 2, 2024, 2:53 p.m. UTC | #1
On 29.03.2024 10:11, 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>

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

Patch

diff --git a/xen/arch/x86/include/asm/vpmu.h b/xen/arch/x86/include/asm/vpmu.h
index f271f28e4a74..dae9b43dac6e 100644
--- a/xen/arch/x86/include/asm/vpmu.h
+++ b/xen/arch/x86/include/asm/vpmu.h
@@ -23,8 +23,8 @@ 
 #define MSR_TYPE_ARCH_CTRL          4
 
 /* Start of PMU register bank */
-#define vpmu_reg_pointer(ctxt, offset) ((void *)((uintptr_t)ctxt + \
-                                                 (uintptr_t)ctxt->offset))
+#define vpmu_reg_pointer(ctxt, offset) ((void *)((uintptr_t)(ctxt) + \
+                                                 (uintptr_t)(ctxt)->offset))
 
 /* Arch specific operations shared by all vpmus */
 struct arch_vpmu_ops {